Fragment onResume not called

Question

I am having 4 (let's say 1,2,3 & 4) fragments. And at a time any one of them will be visible to User. In 2nd fragment I want to do something when user is coming on it. Now when User navigated to 3rd fragment & hits the back button, I want to run a some code. My problem is onResume is not getting called when user hits the back button & come to 2nd fragment.

Paco

Try to use onAttach() method, not onResume() – Myriad

Already tried....Actually OnAttch() is just called once when we attach it from fragment activity. – Paco

How are you switching between the fragments? Please add some example code. – Radiothorium

Are you replacing or adding the new fragment? Also be aware that according to the official documentation "fragment onResume() is generally tied to Activity.onResume of the containing Activity's lifecycle." – Monthly

Answer 1

I recently bumped into the same problem, I know that its too late, but just in case some one else is looking for this, here's my answer:

Thanks @fasteque for narrowing down my search.

The fragments onResume() or onPause() will be called only when the Activities onResume() or onPause() is called. They are tightly coupled to the Activity.

But if you still want listen to the changes in your activity like which fragment is on top, and trigger events accordingly, you might wanna have a look at FragmentManager.OnBackStackChangedListener

Hope this helps :)

Ellanellard

Answer 2

I've had the same problem. If you want to switch from 3rd fragment to 2nd fragment (with the back button or another way) you can call 2nd fragment in the onPause of 3rd fragment.

@Override
public void onPause() {
    super.onPause();

     Fragment2 fragment2= (Fragment2) getActivity().getSupportFragmentManager().findFragmentById(R.id.fragment2);
     if (fragment2!= null) {
         //you can call any function from fragment2
         fragment2.SomeFunctions();
     }
}

Spoke