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android_gcm | sample Android application having push notification | Notification library

 by   dhruvbaldawa Java Version: Current License: No License

 by   dhruvbaldawa Java Version: Current License: No License

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kandi X-RAY | android_gcm Summary

android_gcm is a Java library typically used in Messaging, Notification applications.,roid_gcm has no bugs, it has no vulnerabilities and it has low support. However android_gcm build file is not available. You can download it from GitHub.
This is just a sample Android application having push notifications. It shows a toast message and notification when it receives the push notification. The file gcm_server.py can be used to send messages to the application.
Support
Support
Quality
Quality
Security
Security
License
License
Reuse
Reuse

kandi-support Support

  • android_gcm has a low active ecosystem.
  • It has 28 star(s) with 13 fork(s). There are no watchers for this library.
  • It had no major release in the last 12 months.
  • android_gcm has no issues reported. There are no pull requests.
  • It has a neutral sentiment in the developer community.
  • The latest version of android_gcm is current.
android_gcm Support
Best in #Notification
Average in #Notification
android_gcm Support
Best in #Notification
Average in #Notification

quality kandi Quality

  • android_gcm has 0 bugs and 0 code smells.
android_gcm Quality
Best in #Notification
Average in #Notification
android_gcm Quality
Best in #Notification
Average in #Notification

securitySecurity

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

license License

  • android_gcm does not have a standard license declared.
  • Check the repository for any license declaration and review the terms closely.
  • Without a license, all rights are reserved, and you cannot use the library in your applications.
android_gcm License
Best in #Notification
Average in #Notification
android_gcm License
Best in #Notification
Average in #Notification

buildReuse

  • android_gcm releases are not available. You will need to build from source code and install.
  • android_gcm has no build file. You will be need to create the build yourself to build the component from source.
android_gcm Reuse
Best in #Notification
Average in #Notification
android_gcm Reuse
Best in #Notification
Average in #Notification
Top functions reviewed by kandi - BETA

kandi has reviewed android_gcm and discovered the below as its top functions. This is intended to give you an instant insight into android_gcm implemented functionality, and help decide if they suit your requirements.

  • Create the activity UI .
    • Generate a notification .
      • Display an alert dialog .
        • Cancels all registered receivers .
          • Called when a notification is received .
            • Callback when a deleted messages are deleted .
              • Displays the specified message .

                Get all kandi verified functions for this library.

                Get all kandi verified functions for this library.

                android_gcm Key Features

                This is just a sample Android application having push notifications. It shows a toast message and notification when it receives the push notification. The file gcm_server.py can be used to send messages to the application.

                android_gcm Examples and Code Snippets

                No Code Snippets are available at this moment for android_gcm.

                See all Code Snippets related to Notification

                Community Discussions

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                Trending Discussions on Notification

                QUESTION

                Why do Switch and ListView controls in MAUI not update with 2-way binding?

                Asked 2022-Apr-11 at 09:33

                This question is about two MAUI controls (Switch and ListView) - I'm asking about them both in the same question as I'm expecting the root cause of the problem to be the same for both controls. It's entirely possible that they're different problems that just share some common symptoms though. (CollectionView has similar issues, but other confounding factors that make it trickier to demonstrate.)

                I'm using 2-way data binding in my MAUI app: changes to the data can either come directly from the user, or from a background polling task that checks whether the canonical data has been changed elsewhere. The problem I'm facing is that changes to the view model are not visually propagated to the Switch.IsToggled and ListView.SelectedItem properties, even though the controls do raise events showing that they've "noticed" the property changes. Other controls (e.g. Label and Checkbox) are visually updated, indicating that the view model notification is working fine and the UI itself is generally healthy.

                Build environment: Visual Studio 2022 17.2.0 preview 2.1
                App environment: Android, either emulator "Pixel 5 - API 30" or a real Pixel 6

                The sample code is all below, but the fundamental question is whether this a bug somewhere in my code (do I need to "tell" the controls to update themselves for some reason?) or possibly a bug in MAUI (in which case I should presumably report it)?

                Sample code

                The sample code below can be added directly a "File new project" MAUI app (with a name of "MauiPlayground" to use the same namespaces), or it's all available from my demo code repo. Each example is independent of the other - you can try just one. (Then update App.cs to set MainPage to the right example.)

                Both examples have a very simple situation: a control with two-way binding to a view-model, and a button that updates the view-model property (to simulate "the data has been modified elsewhere" in the real app). In both cases, the control remains unchanged visually.

                Note that I've specified {Binding ..., Mode=TwoWay} in both cases, even though that's the default for those properties, just to be super-clear that that isn't the problem.

                The ViewModelBase code is shared by both examples, and is simply a convenient way of raising INotifyPropertyChanged.PropertyChanged without any extra dependencies:

                ViewModelBase.cs:

                using System.ComponentModel;
                using System.Runtime.CompilerServices;
                
                namespace MauiPlayground;
                
                public class ViewModelBase : INotifyPropertyChanged
                {
                    public event PropertyChangedEventHandler PropertyChanged;
                
                    public bool SetProperty<T>(ref T field, T value, [CallerMemberName] string name = null)
                    {
                        if (EqualityComparer<T>.Default.Equals(field, value))
                        {
                            return false;
                        }
                        field = value;
                        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(name));
                        return true;
                    }
                }
                
                Switch sample code

                SwitchDemo.xaml

                <?xml version="1.0" encoding="utf-8" ?>
                <ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
                             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
                             x:Class="MauiPlayground.SwitchDemo">
                    <StackLayout>
                        <Label Text="Switch binding demo" />
                        <HorizontalStackLayout>
                            <Switch x:Name="switchControl"
                                    IsToggled="{Binding Toggled, Mode=TwoWay}"
                                    Toggled="Toggled" />
                            <CheckBox IsChecked="{Binding Toggled, Mode=TwoWay}" />
                            <Label Text="{Binding Toggled}" />
                        </HorizontalStackLayout>
                
                        <Button Text="Toggle" Clicked="Toggle" />
                        <Label x:Name="manualLabel1" Text="Value set in button click handler" />
                        <Label x:Name="manualLabel2" Text="Value set in toggled handler" />
                    </StackLayout>
                </ContentPage>
                

                SwitchDemo.cs

                namespace MauiPlayground;
                
                public partial class SwitchDemo : ContentPage
                {
                    public SwitchDemo()
                    {
                        InitializeComponent();
                        BindingContext = new ViewModel();
                    }
                
                    private void Toggle(object sender, EventArgs e)
                    {
                        var vm = (ViewModel)BindingContext;
                        vm.Toggled = !vm.Toggled;
                        manualLabel1.Text = $"Set in click handler: {switchControl.IsToggled}";
                    }
                
                    private void Toggled(object sender, ToggledEventArgs e) =>
                        manualLabel2.Text = $"Set in toggled handler: {switchControl.IsToggled}";
                
                    private class ViewModel : ViewModelBase
                    {
                        private bool toggled;
                        public bool Toggled
                        {
                            get => toggled;
                            set => SetProperty(ref toggled, value);
                        }
                    }
                }
                

                Screenshot of the emulator after clicking on the "Toggle" button, which updates the view-model:

                Demonstration of Switch issue

                Notes:

                • The checkbox (bound to the same VM property) has updated
                • The label next to the checkbox (bound to the same VM property) has updated
                • The label below the button indicates that switch.IsToggled is true
                • The label below that indicates that the Switch.Toggled event has been raised
                • The Switch itself has not changed visible state

                Clicking on the Switch control directly does visually toggle it.

                ListView sample code

                ListViewDemo.xaml

                <?xml version="1.0" encoding="utf-8" ?>
                <ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
                             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
                             x:Class="MauiPlayground.ListViewDemo">
                    <StackLayout>
                        <Label Text="ListView binding demo" />
                        <ListView x:Name="listView" ItemsSource="{Binding Items}"
                                  SelectedItem="{Binding SelectedItem, Mode=TwoWay}"
                                  VerticalOptions="Start"
                                  ItemSelected="ItemSelected"/>
                        <Label Text="{Binding SelectedItem}" />
                        <Button Text="Toggle" Clicked="Toggle" />
                        <Label x:Name="manualLabel1" Text="Text set in button click handler" />
                        <Label x:Name="manualLabel2" Text="Text set in item selected handler" />
                    </StackLayout>
                </ContentPage>
                

                ListViewDemo.cs

                namespace MauiPlayground;
                
                public partial class ListViewDemo : ContentPage
                {
                    public ListViewDemo()
                    {
                        InitializeComponent();
                        BindingContext = new ViewModel();
                    }
                
                    private void Toggle(object sender, EventArgs e)
                    {
                        var vm = (ViewModel)BindingContext;
                        vm.SelectedItem = vm.SelectedItem == "First" ? "Second" : "First";
                        manualLabel1.Text = $"Set in click handler: {listView.SelectedItem}";
                    }
                
                    private void ItemSelected(object sender, EventArgs e) =>
                        manualLabel2.Text = $"Set in item selected handler: {listView.SelectedItem}";
                
                    private class ViewModel : ViewModelBase
                    {
                        public List<string> Items { get; } = new List<string> { "First", "Second" };
                
                        private string selectedItem = "First";
                        public string SelectedItem
                        {
                            get => selectedItem;
                            set => SetProperty(ref selectedItem, value);
                        }
                    }
                }
                

                Screenshot of the emulator after clicking on the "Toggle" button, which updates the view-model:

                Demonstration of ListView issue

                Notes:

                • The label below the list view (bound to the same VM property) has updated
                • The label below the button indicates that listView.SelectedItem has the new value
                • The label below that indicates that the ListView.ItemSelected event has been raised
                • The ListView itself appears to have no selected item

                Interestingly, the list view does actually change appearance: before clicking on the button, the first item is visually selected (in orange). Selecting an item from the list manually updates all the properties, but we don't see the selected item in orange.

                ANSWER

                Answered 2022-Apr-09 at 18:07

                These both may be bugs with the currently released version of MAUI.

                This bug was recently posted and there is already a fix for the Switch to address this issue.

                Source https://stackoverflow.com/questions/71810199

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

                Vulnerabilities

                No vulnerabilities reported

                Install android_gcm

                You can download it from GitHub.
                You can use android_gcm like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the android_gcm component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .

                Support

                For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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