Android应用程序堆栈未清除

Question

in my android app i wrote a below code to clear the stack of the activities, but this code is not working, so i request you to provide me working snippets on this.

Intent intent = new Intent(UserProfile.this, Login.class)
        .setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
finish();
startActivity(intent);

Thanking you

Answer 1

In API level 11 a new Intent Flag was added : Intent.FLAG_ACTIVITY_CLEAR_TASK Try this flag. Example :

Intent intent = new Intent(UserProfile.this, Login.class)
        .setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
finish();
startActivity(intent);

Answer 2

You can use ActivityName.this.finish().

 Intent intent = new Intent(UserProfile.this, Login.class)
        .setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);
  YourActivityName.this.finish();

Answer 3

If current Activity is A and you wants to launch B Activity, also, C and D paused in background, FLAG_ACTIVITY_CLEAR_TOP will finish C and D but not A.

there is a workaround can let you finish A activity. Create a "static" Handler that can do finish() while receive message in A activity, then sendMessage using static Handler from A while B activity started.