What Does Onbackpress Call In A Fragment

In a Fragment i have this: onPause(){ super.onPause(); if(flag){ getActivity.finish(); }else{ } } onResume(){ flag = true; super.onResume(); } and there is a Button, on click i

Solution 1:

If you want to close the activity on the back press, then Override the onBackPressed inside the activity as following:

publicvoidonBackPressed() {
   Fragmentfragment= getSupportFragmentManager().findFragmentByTag("yourfragment");
   if (fragment instanceOf YourFragmet) {
          finish();
          return;
   }
   super.onBackPressed();
}

If you want to close the activity on the button click, then you can call

Button.onClick{
  getActivity().onBackPressed();
}

OR

Button.onClick{
  getActivity().finish();
}

If When you are transitioning between Fragments, you call addToBackStack() as part of your FragmentTransaction, then the back button will take you to the fragment on the top of the back stack

Solution 2:

Why can't you use onDetach() of Fragment? On Back key pressed, there will be onDetach() called on the fragment to remove that.

@Override
public void onDetach() {
   super.onDetach();
   if(flag){
     getActivity.finish();
   }else{
        }
}