r2cloud | Decode satellite signals on Raspberry PI | Navigation library

 by   dernasherbrezon Java Version: Current License: Apache-2.0

kandi X-RAY | r2cloud Summary

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:.

            kandi-support Support

              r2cloud has a low active ecosystem.
              It has 219 star(s) with 31 fork(s). There are 23 watchers for this library.
              It had no major release in the last 6 months.
              There are 14 open issues and 113 have been closed. On average issues are closed in 153 days. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of r2cloud is current.

            kandi-Quality Quality

              r2cloud has 18 bugs (3 blocker, 0 critical, 12 major, 3 minor) and 378 code smells.

            kandi-Security Security

              r2cloud has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              r2cloud code analysis shows 0 unresolved vulnerabilities.
              There are 11 security hotspots that need review.

            kandi-License License

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

            kandi-Reuse Reuse

              r2cloud releases are not available. You will need to build from source code and install.
              Build file is available. You can build the component from source.
              Installation instructions, examples and code snippets are available.
              r2cloud saves you 7466 person hours of effort in developing the same functionality from scratch.
              It has 15416 lines of code, 1278 functions and 256 files.
              It has medium code complexity. Code complexity directly impacts maintainability of the code.

            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.

            r2cloud Key Features

            No Key Features are available at this moment for r2cloud.

            r2cloud Examples and Code Snippets

            No Code Snippets are available at this moment for r2cloud.

            Community Discussions


            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



            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:

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


            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).

            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)



            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:

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


            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,



            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.

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


            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



            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


            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:



            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

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


            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


            MainActivity.kt // Bottom Nav



            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


            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:



            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.

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


            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



            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.


            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.

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


            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)



            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:

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


            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.




            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


            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.


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