how to onBackPressed() from another activity

Question

can we call another activity's the function onBackPresses() ? for example, something like this: ---in second_activity----

if(i==10)
   first_activity.onBackPressed();

Answer 1

If you want to open the first activity from the press of the back button on the third one, put this in your third activity:

@Override
public void onBackPressed() {
    Intent intent;
    intent = new Intent(this, FirstActivity.class);
    intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TOP);
    finish();
    startActivity(intent);
}