[Xamarin.Forms Android]When click notification, how to open specify page?

Question

My App use AppShell, contains two TabBar:

    <TabBar>  
        <ShellContent Route="LoginPage" ContentTemplate="{DataTemplate local:LoginPage}" />  
    </TabBar>  
      
    <TabBar>  
        <ShellContent Title="{x:Static resources:AppResources.Tab_Home}" Route="Main" Icon="{FontImage &#xe66c;, FontFamily={StaticResource iconfont},Color=OrangeRed}" ContentTemplate="{DataTemplate local:HomePage2}" />  
        <ShellContent Title="{x:Static resources:AppResources.Tab_Todo}" x:Name="ShellTodoPage" x:FieldModifier="Public" Icon="{FontImage &#xe658;, FontFamily={StaticResource iconfont}}" ContentTemplate="{DataTemplate local:TodoPage}" />  
    </TabBar>  
  

When app launch, LoginPage will show, after login success, I navigated to Home page, and in homepage, I send local notification with this code:

            Intent intent = new Intent(AndroidApp.Context, typeof(MainActivity));  
            intent.PutExtra(TitleKey, title);  
            intent.PutExtra(MessageKey, message);  
  
            PendingIntent pendingIntent = PendingIntent.GetActivity(AndroidApp.Context, pendingIntentId++, intent, PendingIntentFlags.UpdateCurrent | PendingIntentFlags.Immutable);  
  
            NotificationCompat.Builder builder = new NotificationCompat.Builder(AndroidApp.Context, channelId)  
                //.SetContentIntent(pendingIntent)  
                .SetContentTitle(title)  
                .SetContentText(message)  
                .SetAutoCancel(true)  
                .SetLargeIcon(BitmapFactory.DecodeResource(AndroidApp.Context.Resources, Resource.Drawable.jpush_notification_icon))  
                .SetSmallIcon(Resource.Drawable.jpush_notification_icon)  
                .SetDefaults((int)NotificationDefaults.Sound | (int)NotificationDefaults.Vibrate);  
  
            Notification notification = builder.Build();  
            manager.Notify(messageId++, notification);  
  

The notification sent success, But my question is, when I click the notification, it will open LoginPage again!?
How to make it just active the app from background instead of re-openping LoginPage?

Answer 1

Hello,

When app launch, LoginPage will show, after login success, I navigated to Home page, and in homepage, I send local notification with this code:

It is caused by you do not have to set the start page of the app in the notification method.

Please refer to the following steps:

Step1: Add a constructor in your App.xaml.cs file to set start page.

   public App(ContentPage page)   
   {  
       DependencyService.Get<INotificationManager>().Initialize();  
     
       MainPage = page;  
   }  

Step2: Add LoadApplication(new App(new Page1())); into your CreateNotificationFromIntent method:

   void CreateNotificationFromIntent(Intent intent)   
   {  
       if (intent?.Extras != null)  
       {  
           LoadApplication(new App(new Page1()));  
           ...  
           DependencyService.Get<INotificationManager>().ReceiveNotification(title, message);  
       }  
   }  

Then, you could find the Page1 would be opened after clicking the notification.

Best Regards,

Alec Liu.

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