Answers

• LeonLu Member, Xamarin Team Xamurai

  August 2019 edited August 2019 Accepted Answer

  @devxus after your show the splash activity, did you finish splash activity?

  Did you use this PendingIntent to open your application after clicking the notification?

   var manager = (NotificationManager)context.GetSystemService(Context.NotificationService);
   var intent =context.PackageManager.GetLaunchIntentForPackage(context.PackageName);
   intent.AddFlags(ActivityFlags.ClearTop);
   var pendingIntent = PendingIntent.GetActivity(context, 0, intent, PendingIntentFlags.UpdateCurrent);
  

  If so, you will open the applcation at every time, splash activity was destroyed, Android will create a splash activity to push top of the TaskRecord. the next activity is mainactivity, the default lanuchMode is standard. android will create a new mainactivity(by StartActvity(intent)).

  5
• devxus Member ✭✭

  August 2019 edited August 2019

  I am sorry I am new to xamarin so a little lost and not able to follow.

  I do not need the contents of the notification since I refresh the screen for fresh data onresume on recieving notification.
  So do i need pending intent?
  Also, the app resumes fine to the previous state if I put it in the background and return to it by clicking the app icon from home screen OR if I recieve the notification when app is in the foreground and then I click on the notification the onresume is fired and loads the respective tab page.

  I have the onnotificationopened code in app.cs in my xamarin cross platform porject.

  Splashactivity:
  [Activity(Label = "Supervisor", MainLauncher =true, Theme ="@style/ThemeSplash", NoHistory =true )]
  public class SplashActivity : AppCompatActivity
  {
  protected override void OnCreate(Bundle savedInstanceState)
  {
  base.OnCreate(savedInstanceState);
  var mainIntent = new Intent(Application.Context, typeof(MainActivity));
  if (Intent.Extras != null)
  {
  mainIntent.PutExtras(Intent.Extras);
  }
  mainIntent.SetFlags(ActivityFlags.SingleTop);
  StartActivity(mainIntent);
  }

  Below is Mainactivity:

  [Activity(Icon = "@drawable/Logo", Label = "Supervisor", Name = "xxx", Theme = "@style/AppTheme",LaunchMode =LaunchMode.SingleTop, MainLauncher = false, ConfigurationChanges = ConfigChanges.ScreenSize | ConfigChanges.Orientation)]
  public class MainActivity : FormsAppCompatActivity
  {
      internal static MainActivity Instance { get; private set; }
    protected override void OnCreate(Bundle bundle)
      {
              ToolbarResource = Resource.Layout.Toolbar;
              TabLayoutResource = Resource.Layout.Tabbar;
  
              base.OnCreate(bundle);
              Xamarin.Forms.Forms.Init(this, bundle);
              Instance = this;
  
              LoadApplication(new App());
  
              FirebasePushNotificationManager.ProcessIntent(this, Intent);
              FirebasePushNotificationManager.Color = Android.Graphics.Color.Rgb(150, 189, 13);
              FirebasePushNotificationManager.IconResource = Resource.Drawable.NotificationIcon;
              FirebasePushNotificationManager.NotificationActivityFlags = ActivityFlags.ClearTop | ActivityFlags.SingleTop;      
      }
  
      protected override void OnNewIntent(Intent intent)
      {
          base.OnNewIntent(intent);
              FirebasePushNotificationManager.ProcessIntent(this, intent);
      }
  

  0
• devxus Member ✭✭

  August 2019

  I managed to make the mainactivity as my mainlauncher with the theme of splash activity set and oncreate of the mainacitivity I change the theme back to the app theme .

  Now the push notifications retain the state when got to foreground from background.

  Thank you for your reply.
  But I do want to know what you meant in your answer.

  0