r2cloud | Decode satellite signals on Raspberry PI | Navigation library

 by   dernasherbrezon Java Version: Current License: Apache-2.0

kandi X-RAY | r2cloud Summary

r2cloud is a Java library typically used in User Interface, Navigation, Raspberry Pi applications. r2cloud has no vulnerabilities, it has build file available, it has a Permissive License and it has low support. However r2cloud has 18 bugs. You can download it from GitHub.
r2cloud can track and decode various radio signals from satellites such as:.
    Support
      Quality
        Security
          License
            Reuse
            Support
              Quality
                Security
                  License
                    Reuse

                      kandi-support Support

                        summary
                        r2cloud has a low active ecosystem.
                        summary
                        It has 212 star(s) with 30 fork(s). There are 24 watchers for this library.
                        summary
                        It had no major release in the last 6 months.
                        summary
                        There are 15 open issues and 111 have been closed. On average issues are closed in 84 days. There are no pull requests.
                        summary
                        It has a neutral sentiment in the developer community.
                        summary
                        The latest version of r2cloud is current.
                        r2cloud Support
                          Best in #Navigation
                            Average in #Navigation
                            r2cloud Support
                              Best in #Navigation
                                Average in #Navigation

                                  kandi-Quality Quality

                                    summary
                                    r2cloud has 18 bugs (3 blocker, 0 critical, 12 major, 3 minor) and 378 code smells.
                                    r2cloud Quality
                                      Best in #Navigation
                                        Average in #Navigation
                                        r2cloud Quality
                                          Best in #Navigation
                                            Average in #Navigation

                                              kandi-Security Security

                                                summary
                                                r2cloud has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
                                                summary
                                                r2cloud code analysis shows 0 unresolved vulnerabilities.
                                                summary
                                                There are 11 security hotspots that need review.
                                                r2cloud Security
                                                  Best in #Navigation
                                                    Average in #Navigation
                                                    r2cloud Security
                                                      Best in #Navigation
                                                        Average in #Navigation

                                                          kandi-License License

                                                            summary
                                                            r2cloud is licensed under the Apache-2.0 License. This license is Permissive.
                                                            summary
                                                            Permissive licenses have the least restrictions, and you can use them in most projects.
                                                            r2cloud License
                                                              Best in #Navigation
                                                                Average in #Navigation
                                                                r2cloud License
                                                                  Best in #Navigation
                                                                    Average in #Navigation

                                                                      kandi-Reuse Reuse

                                                                        summary
                                                                        r2cloud releases are not available. You will need to build from source code and install.
                                                                        summary
                                                                        Build file is available. You can build the component from source.
                                                                        summary
                                                                        Installation instructions, examples and code snippets are available.
                                                                        summary
                                                                        r2cloud saves you 7466 person hours of effort in developing the same functionality from scratch.
                                                                        summary
                                                                        It has 15416 lines of code, 1278 functions and 256 files.
                                                                        summary
                                                                        It has medium code complexity. Code complexity directly impacts maintainability of the code.
                                                                        r2cloud Reuse
                                                                          Best in #Navigation
                                                                            Average in #Navigation
                                                                            r2cloud Reuse
                                                                              Best in #Navigation
                                                                                Average in #Navigation
                                                                                  Top functions reviewed by kandi - BETA
                                                                                  kandi has reviewed r2cloud and discovered the below as its top functions. This is intended to give you an instant insight into r2cloud implemented functionality, and help decide if they suit your requirements.
                                                                                  • Starts Lora observation
                                                                                    • Sends the request to the LORAR
                                                                                    • Converts a LoraFrame to a RawBeacon object
                                                                                    • Stops an observation
                                                                                  • Process the request
                                                                                    • Sets whether the file should be written
                                                                                    • Returns an integer value from a JsonValue
                                                                                  • Returns a list of observations from the user
                                                                                    • Finds the first observation of the specified transmitter
                                                                                  • Updates the dns
                                                                                  • Returns the current location and view
                                                                                  • Submits an action to the server
                                                                                  • Get the status of the devices
                                                                                  • Decode Lpsk data
                                                                                  • Decode a WV file
                                                                                  • Handles POST request
                                                                                  • Adds a time slot with the specified frequency
                                                                                  • Adds a time slot to the current music slot
                                                                                  • Adds the specified time slot to this time slot
                                                                                  • Starts the Sdr server
                                                                                  • Starts the rtl reader
                                                                                  • Handle a GET request
                                                                                  • Returns the status of the SdrManager
                                                                                  • Get the status of the device
                                                                                  • Starts the R2Cloud application
                                                                                  • Post observation
                                                                                  Get all kandi verified functions for this library.
                                                                                  Get all kandi verified functions for this library.

                                                                                  r2cloud Key Features

                                                                                  APT (weather satellite)
                                                                                  LRPT (weather satellite)
                                                                                  Cubesats (FSK, BPSK, QPSK, AFSK, AX.25, AX100 &etc)

                                                                                  r2cloud Examples and Code Snippets

                                                                                  No Code Snippets are available at this moment for r2cloud.
                                                                                  Community Discussions

                                                                                  Trending Discussions on Navigation

                                                                                  when click back button, the app crashs after a seceond
                                                                                  chevron right
                                                                                  Android Navigation Component : BottomNavigationView's selected tab icon is not updated
                                                                                  chevron right
                                                                                  How to current route name in react-navigation inside navigation.js file?
                                                                                  chevron right
                                                                                  the menu is not displayed in the xml file already tried everything, nothing works
                                                                                  chevron right
                                                                                  How to send params with navigation correctly?
                                                                                  chevron right
                                                                                  Issue with backstack and bottomnav in kotlin
                                                                                  chevron right
                                                                                  Implementing back navigation in Jetpack Compose
                                                                                  chevron right
                                                                                  How to switch pages in the Xamarin Shell without a back button in the top navigation
                                                                                  chevron right
                                                                                  useEffect is not called when navigating back to screen - React Navigation
                                                                                  chevron right
                                                                                  Composable in NavGraphBuilder is repeating 3 or more times
                                                                                  chevron right

                                                                                  QUESTION

                                                                                  when click back button, the app crashs after a seceond
                                                                                  Asked 2022-Apr-05 at 07:26

                                                                                  I have customized back button. when I click on it, the application crashes after a second. here is the code: error log

                                                                                      private var mBackPressed: Long = 0
                                                                                      private val timeInterval = 2000
                                                                                  
                                                                                  
                                                                                  
                                                                                      private fun configBackPress() {
                                                                                          requireActivity().onBackPressedDispatcher.addCallback(this, true) {
                                                                                              when {
                                                                                                  mBackPressed + timeInterval > System.currentTimeMillis() -> {
                                                                                                     
                                                                                                      requireActivity().onBackPressedDispatcher.onBackPressed()
                                                                                                  }
                                                                                                  else -> {
                                                                                                      Snackbar.make(
                                                                                                          requireActivity().findViewById(android.R.id.content),
                                                                                                          getString(R.string.press_once_again_back_button_to_exit),
                                                                                                          Snackbar.LENGTH_SHORT
                                                                                                      )
                                                                                                          .setAnchorView(viewBinding.vSnackBarHelper)
                                                                                                          .show()
                                                                                  
                                                                                                      mBackPressed = System.currentTimeMillis()
                                                                                                  }
                                                                                              }
                                                                                          }
                                                                                      }
                                                                                  

                                                                                  when the user click two times on back button, the back should work.

                                                                                  ANSWER

                                                                                  Answered 2022-Apr-05 at 07:23

                                                                                  before calling requireActivity().onBackPressedDispatcher.onBackPressed(). you should set isEnabled to false because if we go through the onBackPressed source code we see:

                                                                                  it looks for active callbacks and if found any calls them and returns. that's what makes the loop.

                                                                                  your code should be:

                                                                                  isEnabled = false
                                                                                  requireActivity().onBackPressedDispatcher.onBackPressed()
                                                                                  

                                                                                  Source https://stackoverflow.com/questions/71747473

                                                                                  QUESTION

                                                                                  Android Navigation Component : BottomNavigationView's selected tab icon is not updated
                                                                                  Asked 2022-Mar-23 at 09:36

                                                                                  I'm using BottomNavigationView with Navigation Component. When showing fragment is not root fragment, the tab icon is not updated (selected).

                                                                                  Example:
                                                                                  When I switch between Tab Home with Fragment A (which is root fragment) and Tab Star with Fragment B (which is also root fragment) it is working fine.
                                                                                  But when I navigate from Tab Home to another fragment, like fragment A2, and tap on Tab Star and again return to Tab Home, still Tab Star is selected in BottomNavigationView.

                                                                                  It was working fine with version 2.4.0-alpha05, This is happening when I updated it to 2.5.0-alpha01.

                                                                                  build.gradle (app)

                                                                                  implementation "androidx.navigation:navigation-fragment-ktx:2.5.0-alpha01"
                                                                                  implementation "androidx.navigation:navigation-ui-ktx:2.5.0-alpha01"
                                                                                  implementation "androidx.navigation:navigation-dynamic-features-fragment:2.5.0-alpha01"
                                                                                  

                                                                                  build.gradle (root)

                                                                                  classpath "androidx.navigation:navigation-safe-args-gradle-plugin:2.5.0-alpha01"
                                                                                  

                                                                                  Graph:

                                                                                  
                                                                                      
                                                                                          
                                                                                      
                                                                                      
                                                                                      
                                                                                  
                                                                                  

                                                                                  Menu:

                                                                                  
                                                                                  
                                                                                      
                                                                                      
                                                                                  
                                                                                  

                                                                                  Am I doing something wrong? or this is bug?
                                                                                  How can I resolve this problem?

                                                                                  ANSWER

                                                                                  Answered 2022-Feb-12 at 06:00

                                                                                  Given your navigation graph, there is no way to associate fragmentA2 with your menu item fragmentA, so fragmentA is not selected when you return to fragmentA2. As per this issue:

                                                                                  NavigationUI has always used the current destination and what graph it is part of as the source of truth for what tab should be selected.

                                                                                  This can be seen by calling navigate() to go to your SecondFragment - even though you haven't used the bottom nav button, the selected tab was changed because the current destination has changed to R.id.frag_second.

                                                                                  So when you navigate() to R.id.frag_hint via your button in HomeFragment, NavigationUI receives a callback that the current destination has changed to R.id.frag_hint. It looks at that NavDestination and notes that there's no menu item that matches R.id.frag_hint. It then looks at the destination's parent graph - your R.id.sample element. There's no menu item that matches that ID either, so NavigationUI can't associated that destination with any menu item and therefore simply does nothing. That is true on all versions of Navigation.

                                                                                  So what is different when you tap on a bottom navigation item? Well, nothing different from a NavigationUI perspective in fact: the exact same code runs and the current destination and what graph it is part of is the source of truth for what tab should be selected. In the Navigation 2.3.5, there was no state saved for each tab, so it only 'worked' because selecting a tab forced the ID of the current destination to match the destination of the menu item you just tapped.

                                                                                  So what you're seeing in your sample app is that there's no link between R.id.frag_hint and any menu item, which means NavigationUI does nothing. If you want to link R.id.frag_hint to your Home tab, then that's exactly what a nested navigation graph can be used for.

                                                                                  I.e., your navigation graph should instead look like:

                                                                                  
                                                                                     
                                                                                      
                                                                                          
                                                                                              
                                                                                          
                                                                                  
                                                                                          
                                                                                      
                                                                                  
                                                                                      
                                                                                  
                                                                                  
                                                                                  

                                                                                  And your menu XML should be updated to use android:id="@id/home" to match your navigation graph.

                                                                                  Now, when you select the Home bottom nav item, the current destination changes to R.id.frag_hint (as your state was restored due to Navigation 2.4's support for multiple back stacks) and NavigationUI looks at the ID - R.id.frag_hint still doesn't match any menu item, but now the parent graph's ID, R.id.home does match a menu item - your Home menu item, hence, it becomes selected.

                                                                                  The intention that your navigation graph and its structure drives the UI is a key part of how NavigationUI works and is working as intended (there was a bug on earlier versions of Navigation 2.4 that broke this driving principle, but that has since been fixed in beta02). All of NavigationUI is built on public APIs specifically so that if you want to use some different logic for which bottom nav item is selected that is independent from your navigation graph structure, you can absolutely do that.

                                                                                  You'll note from the source code that you can call the public onNavDestinationSelected with your MenuItem to get the exact same navigate() logic which retaining your own ability to return any value from the setOnItemSelectedListener (which is what controls whether the tab becomes selected). Similarly, your own OnDestinationChangedListener can choose to look at the hierarchy of a destination to choose whether to change the selected bottom nav item or not.

                                                                                  So your graphs should also be using nested graphs for each tab:

                                                                                  
                                                                                      
                                                                                          
                                                                                              
                                                                                          
                                                                                          
                                                                                      
                                                                                      
                                                                                          
                                                                                      
                                                                                  
                                                                                  

                                                                                  Menu:

                                                                                  
                                                                                  
                                                                                      
                                                                                      
                                                                                  
                                                                                  

                                                                                  Source https://stackoverflow.com/questions/71089052

                                                                                  QUESTION

                                                                                  How to current route name in react-navigation inside navigation.js file?
                                                                                  Asked 2022-Mar-22 at 19:33

                                                                                  I want to know the current route name but inside the navigation js file, I use the useRoute hook in any component and work well, but I get this error when I use useRoute inside navigation.js

                                                                                  Error: Couldn't find a route object. Is your component inside a screen in a navigator?

                                                                                  navigation.js code example,

                                                                                  export default function Navigation() {
                                                                                    const route = useRoute(); // show error >> Error: Couldn't find a route object. Is your component inside a screen in a navigator?
                                                                                    
                                                                                    return (
                                                                                        
                                                                                              
                                                                                        
                                                                                    );
                                                                                  }
                                                                                  

                                                                                  when I remove useRoute, the Error is gone, But I need to use useRoute or any other way to get current route name inside navigation.js file.

                                                                                  ANSWER

                                                                                  Answered 2022-Mar-22 at 19:33

                                                                                  You can pass the navigationContainerRef from the NavigationContainer to the Navigation comomponent to make the navigation object accessible.

                                                                                  Consider the following code snippet.

                                                                                  import { createNavigationContainerRef } from "@react-navigation/native"
                                                                                  
                                                                                  export const navigationRef = createNavigationContainerRef()
                                                                                  
                                                                                  const App = () => {
                                                                                      return 
                                                                                                   
                                                                                                
                                                                                  }
                                                                                  export default App
                                                                                  

                                                                                  Then, inside Navigation.

                                                                                  export default function Navigation({ navigation }) {
                                                                                  
                                                                                    const route = navigation.current?.getCurrentRoute()
                                                                                    
                                                                                    return (
                                                                                        
                                                                                              
                                                                                        
                                                                                    );
                                                                                  }
                                                                                  

                                                                                  The current route name get then be accessed using route?.name.

                                                                                  Edit: As jhon antoy correctly pointed out in the comments, this does not update the current route state if we navigate to a different screen. We need to update this ourselves as follows.

                                                                                  export const navigationRef = createNavigationContainerRef();
                                                                                  
                                                                                  const App = () => {
                                                                                    const [routeName, setRouteName] = useState();
                                                                                  
                                                                                    return (
                                                                                       {
                                                                                          setRouteName(navigationRef.getCurrentRoute().name)
                                                                                        }}
                                                                                        onStateChange={async () => {
                                                                                          const previousRouteName = routeName;
                                                                                          const currentRouteName = navigationRef.getCurrentRoute().name;
                                                                                          console.log("route", currentRouteName)
                                                                                          setRouteName(currentRouteName);
                                                                                        }}
                                                                                      >
                                                                                         
                                                                                      
                                                                                    );
                                                                                  }
                                                                                  
                                                                                  export default App;
                                                                                  

                                                                                  Inside Navigation.

                                                                                  export function Navigation(props) {
                                                                                  
                                                                                    const route = props.routeName
                                                                                  
                                                                                    console.log(props)
                                                                                  
                                                                                    return (
                                                                                        
                                                                                              
                                                                                        
                                                                                    );
                                                                                  }
                                                                                  

                                                                                  Source https://stackoverflow.com/questions/71571599

                                                                                  QUESTION

                                                                                  the menu is not displayed in the xml file already tried everything, nothing works
                                                                                  Asked 2022-Mar-05 at 06:03

                                                                                  The main problem is that the menu bar is not displayed in my layout file. I've done a few searches but haven't been able to find a solution or a reason as to why it is behaving this way. Any help would be appreciated. Thanks. my menu file

                                                                                  `
                                                                                          
                                                                                          
                                                                                          
                                                                                      
                                                                                      `
                                                                                  

                                                                                  XML my layout file

                                                                                      `
                                                                                  
                                                                                      
                                                                                  
                                                                                          
                                                                                  
                                                                                          
                                                                                  
                                                                                          
                                                                                  
                                                                                          
                                                                                  
                                                                                              
                                                                                  
                                                                                              
                                                                                  
                                                                                              
                                                                                          
                                                                                  
                                                                                  
                                                                                      
                                                                                  
                                                                                  
                                                                                      
                                                                                  
                                                                                  
                                                                                  `
                                                                                  

                                                                                  Where am I doing wrong? I checked some tutorials, and that exactly the process of setting bottom navigation view photo

                                                                                  ANSWER

                                                                                  Answered 2022-Mar-05 at 06:03

                                                                                  If you do not use the rules of material design, you should not have a theme that inherits from material design. Find the theme.xml according to the Android version of your studio and change the parent to Theme.AppCompat.Light.DarkActionBar.

                                                                                  Source https://stackoverflow.com/questions/71359224

                                                                                  QUESTION

                                                                                  How to send params with navigation correctly?
                                                                                  Asked 2022-Feb-27 at 12:26

                                                                                  I'm using navigation.navigate to move between screens but I face the following problem.

                                                                                  I call the method to navigate:

                                                                                  const FileCard = ({ fileDetails }: Props) => {
                                                                                    
                                                                                    const navigation = useNavigation();
                                                                                  
                                                                                    const loadDetails = () => {
                                                                                      console.log(JSON.stringify(fileDetails));
                                                                                      navigation.navigate("FileDetailScreen" as never, {file: 
                                                                                      fileDetails} as never)
                                                                                    }
                                                                                  

                                                                                  And I would like to connect with this screen:

                                                                                  interface Props {
                                                                                      file: FileInfo
                                                                                    }
                                                                                  
                                                                                  const FileDetailScreen = ({ file }: Props) => {
                                                                                          
                                                                                    return (
                                                                                      
                                                                                        
                                                                                            {
                                                                                                (file) ?
                                                                                                Exists
                                                                                                :
                                                                                                Does not exists
                                                                                            }
                                                                                      
                                                                                      
                                                                                    )
                                                                                  }
                                                                                  

                                                                                  But I get "Does not exists" in my screen, so I can't show the information.

                                                                                  How can I fix this problem? Thanks!

                                                                                  EDIT

                                                                                  I call the loadDetails function here:

                                                                                       {loadDetails(fileInfo)}}
                                                                                      >
                                                                                  
                                                                                      // Elements and styles
                                                                                  
                                                                                      
                                                                                  

                                                                                  And this is my stack navigation:

                                                                                      
                                                                                        
                                                                                        
                                                                                        
                                                                                        
                                                                                        
                                                                                        
                                                                                        
                                                                                        
                                                                                  
                                                                                  // THE SCREEN
                                                                                        
                                                                                  
                                                                                      
                                                                                  

                                                                                  ANSWER

                                                                                  Answered 2022-Feb-27 at 12:26

                                                                                  You are passing the props for FileDetailScreen using the navigation route param props. If you have a screen

                                                                                  const FileDetailScreen = ({ file }: Props) => {
                                                                                  
                                                                                  ...
                                                                                  
                                                                                  } 
                                                                                  

                                                                                  then file is a prop of the JSX component, e.g.

                                                                                  const SomeOtherScreen = () => {
                                                                                  
                                                                                      return 
                                                                                  }
                                                                                  

                                                                                  This is different then passing a prop using the route params. If we want to navigate to FileDetailScreen and pass the file prop using

                                                                                  navigation.navigate("FileDetailScreen" as never, {file: fileDetails} as never)
                                                                                  

                                                                                  you are not instantiating a new JSX component, but you are passing route params. We can access them as follows.

                                                                                  const FileDetailScreen = ({file, route}) {
                                                                                  
                                                                                   const f = route.params?.file
                                                                                  }
                                                                                  

                                                                                  Notice that route is passed by the Navigator. Being precise here, we should add this to the props interface of your screen to satisfy TypeScript. This is very well documented here.

                                                                                  Edit: Since it was explicitly requested to solve the TypeScript error, we are going to solve this as well.

                                                                                  1. Create a type, e.g. RootStackParams where we need to provide the types for all route params.
                                                                                  
                                                                                  export type RouteStackParams = {
                                                                                  
                                                                                      FileDetailScreen: { 
                                                                                          file: FileInfo
                                                                                      }
                                                                                  
                                                                                      ...
                                                                                  }
                                                                                  

                                                                                  Notice that you need to do this for all your routes in order to provide correct types for the TypeScript compiler.

                                                                                  1. Create your Stack.Navigator by providing the route param types as follows.
                                                                                  const Stack = createStackNavigator()
                                                                                  

                                                                                  Your FileDetailScreen is now correctly typed. Notice as well that this does not effect your runtime behavior, thus your code would work without doing this.

                                                                                  Source https://stackoverflow.com/questions/71283904

                                                                                  QUESTION

                                                                                  Issue with backstack and bottomnav in kotlin
                                                                                  Asked 2022-Feb-14 at 18:53

                                                                                  Hello there I'm facing some issues with the navigation between fragments

                                                                                  ok I explain in detail

                                                                                  I have a bottom nav with 4 fragments Home, Following, Notification, and Profile, there is no issue with the bottom navigation on backstack , but now for eg from profile fragment I jumped to a fragment called edit_profile which is not a part of the bottom nav and when press back I want that it should go back to the profile fragment but the backstack is taking me from edit_profile to directly home fragment

                                                                                  here is a recording link

                                                                                  I recently change my project from java to kotlin and I'm a beginner in kotlin

                                                                                  i really like the navigation of Pinterest and Instagram

                                                                                  Note:- All this code is automatically changed to kotlin (with some changes done manually ) , this issue was also with java and not after migrating to kotlin , Also if you want more reference of the code please tell me i will update the question

                                                                                  Code

                                                                                  MainActivity.kt // Bottom Nav

                                                                                  class MainActivity : AppCompatActivity() {
                                                                                      var bottomNavigationView: BottomNavigationView? = null
                                                                                      var integerDeque: Deque = ArrayDeque(3)
                                                                                      var flag = true
                                                                                  
                                                                                      @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
                                                                                      override fun onCreate(savedInstanceState: Bundle?) {
                                                                                          super.onCreate(savedInstanceState)
                                                                                          AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_NO)
                                                                                          setContentView(R.layout.activity_main)
                                                                                          val window = this.window
                                                                                          window.statusBarColor = this.resources.getColor(R.color.black)
                                                                                          bottomNavigationView = findViewById(R.id.bottom_navigation_view)
                                                                                          integerDeque.push(R.id.nav_home)
                                                                                          loadFragments(Home_Fragment())
                                                                                          bottomNavigationView!!.selectedItemId = R.id.nav_home
                                                                                          bottomNavigationView!!.setOnNavigationItemSelectedListener(
                                                                                              BottomNavigationView.OnNavigationItemSelectedListener { item: MenuItem ->
                                                                                                  val id = item.itemId
                                                                                                  if (integerDeque.contains(id)) {
                                                                                                      if (id == R.id.nav_home) {
                                                                                                          integerDeque.size
                                                                                                          if (flag) {
                                                                                                              integerDeque.addFirst(R.id.nav_home)
                                                                                                              flag = false
                                                                                                          }
                                                                                                      }
                                                                                                      integerDeque.remove(id)
                                                                                                  }
                                                                                                  integerDeque.push(id)
                                                                                                  loadFragments(getFragment(item.itemId))
                                                                                                  false
                                                                                              }
                                                                                          )
                                                                                      }
                                                                                  
                                                                                      @SuppressLint("NonConstantResourceId")
                                                                                      private fun getFragment(itemId: Int): Fragment {
                                                                                          when (itemId) {
                                                                                              R.id.nav_home -> {
                                                                                                  bottomNavigationView!!.menu.getItem(0).isChecked = true
                                                                                                  return Home_Fragment()
                                                                                              }
                                                                                              R.id.nav_following -> {
                                                                                                  bottomNavigationView!!.menu.getItem(1).isChecked = true
                                                                                                  return Following_Fragment()
                                                                                              }
                                                                                              R.id.nav_notification -> {
                                                                                                  bottomNavigationView!!.menu.getItem(2).isChecked = true
                                                                                                  return Notification_Fragment()
                                                                                              }
                                                                                              R.id.nav_profile -> {
                                                                                                  bottomNavigationView!!.menu.getItem(3).isChecked = true
                                                                                                  return Profile_Fragment()
                                                                                              }
                                                                                          }
                                                                                          bottomNavigationView!!.menu.getItem(0).isChecked = true
                                                                                          return Home_Fragment()
                                                                                      }
                                                                                  
                                                                                      private fun loadFragments(fragment: Fragment?) {
                                                                                          if (fragment != null) {
                                                                                              supportFragmentManager.beginTransaction()
                                                                                                  .replace(R.id.fragment_container, fragment, fragment.javaClass.simpleName)
                                                                                                  .commit()
                                                                                          }
                                                                                      }
                                                                                  
                                                                                      override fun onBackPressed() {
                                                                                          integerDeque.pop()
                                                                                          if (!integerDeque.isEmpty()) {
                                                                                              loadFragments(getFragment(integerDeque.peek()))
                                                                                          } else {
                                                                                              finish()
                                                                                          }
                                                                                      }
                                                                                  

                                                                                  Edit_Profile.kt // from this fragment i want to go back to the last fragment which should be the profile fragment

                                                                                  class Edit_Profile : Fragment() {
                                                                                      private var profilePhoto: CircleImageView? = null
                                                                                      override fun onCreateView(
                                                                                          inflater: LayoutInflater,
                                                                                          container: ViewGroup?,
                                                                                          savedInstanceState: Bundle?
                                                                                      ): View? {
                                                                                          val view = inflater.inflate(R.layout.fragment_edit_profile, container, false)
                                                                                          profilePhoto = view.findViewById(R.id.circleImageView)
                                                                                          initImageLoader()
                                                                                          setProfileImage()
                                                                                          val imageView = view.findViewById(R.id.backArrow)
                                                                                          imageView.setOnClickListener {
                                                                                              val newCase: Fragment = Profile_Fragment()
                                                                                              assert(fragmentManager != null)
                                                                                              val transaction = requireFragmentManager().beginTransaction()
                                                                                              transaction.replace(R.id.fragment_container, newCase)
                                                                                              transaction.addToBackStack(Profile_Fragment.toString())
                                                                                              transaction.commit()
                                                                                          }
                                                                                          return view
                                                                                      }
                                                                                  

                                                                                  Edit

                                                                                  added a part of the transaction from Profile Fragment to Edit Profile

                                                                                  ProfileFragment.kt

                                                                                  editProfileButton!!.setOnClickListener(View.OnClickListener { v: View? ->
                                                                                              val edit_profile: Fragment = Edit_Profile()
                                                                                              requireActivity().getSupportFragmentManager()
                                                                                                  .beginTransaction()
                                                                                                  .add(R.id.fragment_container, edit_profile,"TAG")
                                                                                                  .addToBackStack("TAG")
                                                                                                  .commit()
                                                                                          })
                                                                                  

                                                                                  ANSWER

                                                                                  Answered 2022-Jan-13 at 10:08

                                                                                  Usually I follow this pattern

                                                                                  Where I add HomeF in main container which includes all bottom nav tab, and all bottom nav tab will open in home container, and those fragment which are not part of bottom nav will open in main container. I generally add(not replace) all the fragments in main container and set add to back stack , so that if user goes from profile (home_container) to something in main container , while backstack we can pop the top fragment and user will be seeing profile.

                                                                                  Source https://stackoverflow.com/questions/70694011

                                                                                  QUESTION

                                                                                  Implementing back navigation in Jetpack Compose
                                                                                  Asked 2022-Jan-30 at 15:53

                                                                                  I've got a top bar with IconButton for handling back navigation when clicked.

                                                                                  Function passed as callback's implemented like this:

                                                                                  private fun navigateBack(navController: NavController) {
                                                                                      val route = navController.previousBackStackEntry?.destination?.route ?: ""
                                                                                      navController.navigate(route)
                                                                                  }
                                                                                  

                                                                                  Unfortunately, it's not working the same as the default android bottom navigation shown in the picture

                                                                                  Is there a way to implement the same back navigation as bottom system navigation has?

                                                                                  ANSWER

                                                                                  Answered 2022-Jan-30 at 15:53

                                                                                  You can pass your NavController to your TopAppBar and use navController.navigateUp() in the navigation icon.

                                                                                  If you want to show this icon only in some composables you can use a parameter, like canPop in the following example, and set it true in the composable where you want handle the back button.

                                                                                  if (canPop) {
                                                                                      TopAppBar(
                                                                                          title = { Text(text = title) },
                                                                                          navigationIcon = {
                                                                                              IconButton(onClick = {
                                                                                                  navController.navigateUp()
                                                                                              }) {
                                                                                                  Icon(Icons.Rounded.ArrowBack, "")
                                                                                              }
                                                                                          },
                                                                                          backgroundColor = MaterialTheme.colors.TopBarColor)
                                                                                  } else {
                                                                                      TopAppBar(
                                                                                          title = { Text(text = title) },
                                                                                          backgroundColor = MaterialTheme.colors.TopBarColor
                                                                                      )
                                                                                  }
                                                                                  

                                                                                  Check also popBackStack documentation

                                                                                  Attempts to pop the controller's back stack. Analogous to when the user presses the system Back button when the associated navigation host has focus.

                                                                                  Source https://stackoverflow.com/questions/69441074

                                                                                  QUESTION

                                                                                  How to switch pages in the Xamarin Shell without a back button in the top navigation
                                                                                  Asked 2022-Jan-26 at 06:20

                                                                                  I have picker in my left menu navigation shell that change the main page language,
                                                                                  for example actually the app in English. When I change to French, it change and redirect to main page with French text.
                                                                                  The problem is when I press the back arrow in navigation page, it back to old language (English).

                                                                                  Here the shell navigation

                                                                                  
                                                                                      
                                                                                  
                                                                                       
                                                                                  
                                                                                  
                                                                                  
                                                                                  
                                                                                  
                                                                                  

                                                                                  and this is the method that redirects to the main page:

                                                                                  private async void ChangeLange(string lang)
                                                                                  {
                                                                                  ...
                                                                                              Routing.RegisterRoute(nameof(Dashboard), typeof(Dashboard));
                                                                                              await Shell.Current.GoToAsync($"{nameof(Dashboard)}");// it redirect but with button back
                                                                                              RemoveStackNavigation ()
                                                                                           //   await Shell.Current.GoToAsync("//main"); like this , it dosent refresh the page with 
                                                                                  
                                                                                              Shell.Current.FlyoutIsPresented = false; 
                                                                                  }
                                                                                  

                                                                                  here is the MVMM

                                                                                          public string _selectedLang;
                                                                                          public string  SelectedLang
                                                                                          {
                                                                                              get
                                                                                              {
                                                                                                  return _selectedLang;
                                                                                              }
                                                                                              set
                                                                                              {
                                                                                                  if (_selectedLang != value)
                                                                                                  {
                                                                                                      _selectedLang = value;
                                                                                                      OnPropertyChanged("SelectedLang");
                                                                                                      ChangeBuilding(value);
                                                                                  
                                                                                                  }
                                                                                              }
                                                                                          }
                                                                                  

                                                                                  I tried to RemoveStackNavigation before make redirection to Dashboard like this :

                                                                                          public static void RemoveStackNavigation()
                                                                                          {
                                                                                              var existingPages = Shell.Current.Navigation.NavigationStack.ToList();
                                                                                              foreach (var page in existingPages)
                                                                                              {
                                                                                                  if (page != null)
                                                                                                      Shell.Current.Navigation.RemovePage(page);
                                                                                              }
                                                                                          }
                                                                                  

                                                                                  ANSWER

                                                                                  Answered 2022-Jan-26 at 06:20

                                                                                  The navigation stack of Shell has something special. Clear the navigation stack is not a good choice. We always use Routes to do the navigation for the Shell. You need to know which would generate the stack.

                                                                                  • A route, which defines the path to content that exists as part of the Shell visual hierarchy.
                                                                                  • A page. Pages that don't exist in the Shell visual hierarchy can be pushed onto the navigation stack from anywhere within a Shell application. For example, a details page won't be defined in the Shell visual hierarchy, but can be pushed onto the navigation stack as required.

                                                                                  For more details, please check the MS docs. https://docs.microsoft.com/en-us/xamarin/xamarin-forms/app-fundamentals/shell/navigation

                                                                                  When you press the back button, override the back button event and then judge the route to do the navigation would be better. Use the specific route name to go back.

                                                                                  Update:

                                                                                  After compilation the Navigation Bar that we call in Xamarin Forms, turns into the Action Bar for Android during runtime.

                                                                                  Set the toolbar after LoadApplication(new App()); in OnCreate of MainActivity.

                                                                                          AndroidX.AppCompat.Widget.Toolbar toolbar
                                                                                       = this.FindViewById(Resource.Id.toolbar);
                                                                                      SetSupportActionBar(toolbar);
                                                                                  

                                                                                  And then overrode OnOptionsItemSelected(). When you press the backbutton on navigation bar, this event would be triggered.

                                                                                   public override bool OnOptionsItemSelected(IMenuItem item)
                                                                                      {
                                                                                     
                                                                                       }
                                                                                  

                                                                                  Source https://stackoverflow.com/questions/70281291

                                                                                  QUESTION

                                                                                  useEffect is not called when navigating back to screen - React Navigation
                                                                                  Asked 2022-Jan-07 at 15:04

                                                                                  I have a screen that makes a call to an api to fetch some data which is then displayed

                                                                                  An issue that I am seeing is that when I navigate away from the screen (I am using react-navigation 6.x) and then go back to it useEffect() is not being called

                                                                                  From what I have read so far, this is down to the value of userId not changing (I think i need to do some more reading around the useEffect() hook to understand better, maybe someone will help clear things up with this question)

                                                                                  import React, {useState, useEffect, useContext} from 'react';
                                                                                  import AppContext from '../../components/AppContext.js';
                                                                                  
                                                                                  export const CreateNewEvent = () => {
                                                                                    const globalContext = useContext(AppContext);
                                                                                    const userId = globalContext.userInfo.id;
                                                                                  
                                                                                    useEffect(() => {
                                                                                      const body = JSON.stringify({userId});
                                                                                      fetch(eventTypesUrl, {
                                                                                        method: 'POST',
                                                                                        headers: {'Content-Type': 'application/json', Accept: 'application/json'},
                                                                                        body: body,
                                                                                      })
                                                                                        .then(response => response.json())
                                                                                        .then(json => setEventTypeData(json))
                                                                                        .catch(error => console.error(error))
                                                                                        .finally(() => setLoading(false));
                                                                                      }, [userId]);
                                                                                  
                                                                                  }
                                                                                  

                                                                                  So in my scenario I am on Screen 1 (Here i can create an event which makes a request to get all event types and loads them into a select menu)

                                                                                  When I navigate to Screen 2 (to create an event type) and then back to Screen 1, the useEffect() hook is not called resulting in being unable to see the event type I have just created (hope that makes sense).. also notice that any data entered in Screen 1 previously still remains

                                                                                  I have come across this post which appears to be what I am dealing with, just a little unsure how to implement with my setup

                                                                                  How can I ensure that Screen 2 makes the api call when i go back and that all previous form data is cleared out?

                                                                                  Thanks

                                                                                  ANSWER

                                                                                  Answered 2022-Jan-07 at 14:44

                                                                                  At the core, React Navigation does not rerender the screen when a user navigates back to that screen for performance optimization and avoids unnecessary rerenders.

                                                                                  When required, They provide a useful hook to detect when screen is focused and run some side effects.

                                                                                  Let refactor code as below:

                                                                                  Top-level import 
                                                                                  import { useFocusEffect } from "@react-navigation/core";
                                                                                  
                                                                                  // Run side effects when screen focused, navigated, or visited 
                                                                                  
                                                                                  useFocusEffect(
                                                                                      React.useCallback(() => {
                                                                                   const body = JSON.stringify({userId});
                                                                                      fetch(eventTypesUrl, {
                                                                                        method: 'POST',
                                                                                        headers: {'Content-Type': 'application/json', Accept: 'application/json'},
                                                                                        body: body,
                                                                                      })
                                                                                        .then(response => response.json())
                                                                                        .then(json => setEventTypeData(json))
                                                                                        .catch(error => console.error(error))
                                                                                        .finally(() => setLoading(false));
                                                                                        
                                                                                  
                                                                                        return () => {
                                                                                          // Run  somelogisx when user leave screen,
                                                                                          // Cleaning caches or cancelling subscriptions
                                                                                  
                                                                                         
                                                                                        };
                                                                                      }, [userId]))
                                                                                  
                                                                                  
                                                                                  
                                                                                  

                                                                                  Note: React.useCallback is part of useFocusEffect API. The React Navigation team trying to optimize screen performance with memoization.

                                                                                  Source https://stackoverflow.com/questions/70622599

                                                                                  QUESTION

                                                                                  Composable in NavGraphBuilder is repeating 3 or more times
                                                                                  Asked 2022-Jan-07 at 03:26

                                                                                  I have a problem when do a call to my composable in the NavGraph, it is repeating 3 times or sometimes more times. I have looked where I do the call and I don't see any loop or something.

                                                                                  NavGraph

                                                                                  fun NavGraphBuilder.addScheduleDetails(
                                                                                      navController: NavHostController,
                                                                                      userDataViewModel: UserDataViewModel,
                                                                                      titulos: MutableState,
                                                                                      datosViewModel: DatosViewModel,
                                                                                  ){
                                                                                      val animationState = mutableStateOf(true)
                                                                                      composable(route = MainDestinations.SCHEDULE_DETAILS_ROUTE+"/{${NavArguments.NOMBRE_HORARIO}}")
                                                                                      {backStackEntry ->
                                                                                  
                                                                                              Log.w("Call", "ScheduleDetails")
                                                                                              titulos.value = backStackEntry.arguments?.getString(NavArguments.NOMBRE_HORARIO)!!+" "
                                                                                              val actions = MainActions(navController = navController)
                                                                                  
                                                                                              DetallesHorarioScreen(
                                                                                                  nombreHorario = backStackEntry.arguments?.getString(NavArguments.NOMBRE_HORARIO),
                                                                                                  userDataViewModel = userDataViewModel,
                                                                                                  onNavToAddSubject = actions.navigateToAgregarMateria,
                                                                                                  datosViewModel = datosViewModel,
                                                                                                  animationState = animationState
                                                                                              )
                                                                                      }
                                                                                  }
                                                                                  

                                                                                  Prints from LOG

                                                                                  2022-01-06 19:57:01.548 30533-30533/horarios W/Call: ScheduleDetails
                                                                                  2022-01-06 19:57:01.613 30533-30533/horarios W/Call: ScheduleDetails
                                                                                  2022-01-06 19:57:01.987 30533-30533/horarios W/Call: ScheduleDetails
                                                                                  

                                                                                  Call to composable(route = MainDestinations.SCHEDULE_DETAILS_ROUTE ...)

                                                                                  Card(
                                                                                          modifier = Modifier
                                                                                              .fillMaxWidth()
                                                                                              .height(80.dp)
                                                                                              .padding(10.dp)
                                                                                              .clickable { onNavToHorario(nombre) },        //Call to navigator
                                                                                          border = BorderStroke(width = 1.dp, color = primaryColorCustom),
                                                                                          shape = RoundedCornerShape(10),
                                                                                          backgroundColor = Color.White,
                                                                                          elevation = 4.dp
                                                                                      ) {...}
                                                                                  

                                                                                  onNavToHorario()

                                                                                  val actions  = MainActions(navController = navController)
                                                                                  (...)
                                                                                  onNavToHorario = actions.navigateToHorario
                                                                                  

                                                                                  MainActions()

                                                                                  class MainActions(navController: NavHostController){
                                                                                      val navigateToHorario:(String) -> Unit = {nomHorario: String ->
                                                                                          navController.navigate(route = MainDestinations.SCHEDULE_DETAILS_ROUTE+"/${nomHorario}")
                                                                                      }
                                                                                  }
                                                                                  

                                                                                  In other case I had a similar problem and was occasioned for animations but I already delete all animations in NavGraph but the problem is still

                                                                                  ANSWER

                                                                                  Answered 2022-Jan-07 at 02:45

                                                                                  Navigation always crossfades destinations, so each screen will always recompose multiple times. This is expected as per the Thinking in Compose guide:

                                                                                  In some cases, a composable function might run for every frame of a UI animation. If the function performs expensive operations, like reading from device storage, the function can cause UI jank.

                                                                                  You aren't doing anything wrong (you aren't triggering side effects as part of composition), so your code is already fine.

                                                                                  Source https://stackoverflow.com/questions/70615985

                                                                                  Community Discussions, Code Snippets contain sources that include Stack Exchange Network

                                                                                  Vulnerabilities

                                                                                  No vulnerabilities reported

                                                                                  Install r2cloud

                                                                                  From the image. This is the easiest way to install r2cloud on Raspberry PI. It will require brand new SD card:.
                                                                                  Install r2cloud
                                                                                  From the image. This is the easiest way to install r2cloud on Raspberry PI. It will require brand new SD card: Download the latest official image Insert SD card into the card reader and flash it. You could use Etcher to do this Insert SD card into the card reader and create file r2cloud.txt in the root directory. This file should contain any random string. This string is a login token. This token will be used during initial setup.
                                                                                  Or from repository binaries: Login via SSH and create r2cloud.txt file in /boot directory. This file should contain any random string. This string is a login token. This token will be used during initial setup. Execute the following commands:
                                                                                  Open https://raspberrypi.local address.
                                                                                  Accept self-signed certificate. This is unique certificate that was generated during installation. Once setup is complete, you could enable proper SSL using Letsencrypt.

                                                                                  Support

                                                                                  Please read our guidelines.
                                                                                  Find more information at:
                                                                                  Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items
                                                                                  Find more libraries
                                                                                  Explore Kits - Develop, implement, customize Projects, Custom Functions and Applications with kandi kits​
                                                                                  Save this library and start creating your kit
                                                                                  CLONE
                                                                                • HTTPS

                                                                                  https://github.com/dernasherbrezon/r2cloud.git

                                                                                • CLI

                                                                                  gh repo clone dernasherbrezon/r2cloud

                                                                                • sshUrl

                                                                                  git@github.com:dernasherbrezon/r2cloud.git

                                                                                • Share this Page

                                                                                  share link

                                                                                  Reuse Pre-built Kits with r2cloud

                                                                                  Consider Popular Navigation Libraries

                                                                                  react-navigation

                                                                                  by react-navigation

                                                                                  ImmersionBar

                                                                                  by gyf-dev

                                                                                  layer

                                                                                  by sentsin

                                                                                  slideout

                                                                                  by Mango

                                                                                  urh

                                                                                  by jopohl

                                                                                  Try Top Libraries by dernasherbrezon

                                                                                  sdr-server

                                                                                  by dernasherbrezonC

                                                                                  jradio

                                                                                  by dernasherbrezonJava

                                                                                  rtlSpectrum

                                                                                  by dernasherbrezonJava

                                                                                  sdr-modem

                                                                                  by dernasherbrezonC

                                                                                  protobuf-gcless

                                                                                  by dernasherbrezonJava

                                                                                  Compare Navigation Libraries with Highest Support

                                                                                  react-navigation

                                                                                  by react-navigation

                                                                                  gnuradio

                                                                                  by gnuradio

                                                                                  layer

                                                                                  by sentsin

                                                                                  slideout

                                                                                  by Mango

                                                                                  react-native-screens

                                                                                  by software-mansion

                                                                                  Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items
                                                                                  Find more libraries
                                                                                  Explore Kits - Develop, implement, customize Projects, Custom Functions and Applications with kandi kits​
                                                                                  Save this library and start creating your kit