Android: Clear the back stack

Question

In Android I have some activities, let\'s say A, B, C.

In A, I use this code to open B:

Intent intent = new Intent(this, B.class);
startActivity(inte         


        

Answer 1

intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
startActivity(intent);

Answer 2

Use this code for starting a new Activity and close or destroy all other activity stack or back stack.

Intent intent = new Intent(this, MainActivity.class);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
startActivity(intent);

Answer 3

Add NO History Flag in the intent.

In activity B, start the activity C as below >>>>>>

Intent intent = new Intent(this, C.class);
intent.setFlags(intent.getFlags() | Intent.FLAG_ACTIVITY_NO_HISTORY); 
startActivity(intent);
finish();

Answer 4

Use setFlags() method for clear back side opened all activity close and start yourActvity

Intent intent = new Intent(getApplicationContext(), yourActivity.class);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
startActivity(intent);

Answer 5

for me adding Intent.FLAG_ACTIVITY_CLEAR_TASK solved the problem

Intent i = new Intent(SettingsActivity.this, StartPage.class);
                i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP  | Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK);
                startActivity(i);
finish();

Answer 6

Either add this to your Activity B and Activity C

android:noHistory="true"

or Override onBackPressed function to avoid back pressing with a return.

@Override
public void onBackPressed() {
   return;
}