Answers

• george_isaac25 Member ✭✭

  September 2020

  https://stackoverflow.com/questions/2722001/finish-any-previous-activity-in-stack-from-current-activity

  Try this, it is in java. But you can use a similar solution

  0
• jezh Member, Xamarin Team Xamurai

  September 2020

  A simple method is to use MessagingCenter.

  The steps is as follows:

  1.In your current activity,send message:

          mSendBtn.Click += delegate {
              Xamarin.Forms.MessagingCenter.Send<Object>(this, "Hi");
          };
  

  2.In your previous activity,subscribe to a message:

          Xamarin.Forms.MessagingCenter.Subscribe<object>(this, "Hi", (sender) =>
          {
              Log.Info("MainActivity", "receive message...");
  
              Finish();               
          });
  

  3.Unsubscribe from a message once you don't need to send message in your current activity,for example:

       protected override void OnDestroy()
      {
          base.OnDestroy();
  
          Xamarin.Forms.MessagingCenter.Unsubscribe<object>(this, "Hi");
      }
  

  0
• jezh Member, Xamarin Team Xamurai

  September 2020

  Another method is to use Handler:

  1.define MyHandler which implement Handler.ICallback

    public class MyHandler : Java.Lang.Object, Handler.ICallback
          {
              Activity activity;
              public MyHandler(Activity context) {
                  activity = context;
              }
  
              public bool HandleMessage(Message msg)
              {
                  // add your code
                  activity.Finish();
  
                  return true;
              }
          }
  

  2.In your previous activity:

      public static Activity context;
  

  and init value for it in method OnCreate

    context = this;
  

  3.In your current activity

  private Handler handler = new Handler(Looper.MainLooper, new MyHandler( PreviousActivity.context));
  
   handler.SendMessage(new Message());
  

  0
• jezh Member, Xamarin Team Xamurai

  September 2020

  Hi @GASRON , have you resolved your question?

  If my reply is useful for you,could you please mark it as answered? Thanks in advance.

  0