Android dispatchKeyEvent not called when Dialog fragment is show

Question

when my dialog fragment is hide, dispatchKeyEvent worked fine

@Override
public boolean dispatchKeyEvent(KeyEvent event) {

    Toast.makeText(FragmentPlayer.this, "test: called", Toast.LENGTH_SHORT).show();

    return super.dispatchKeyEvent(event);

}

but when my dialog fragment is show, dispatchKeyEvent not called

MyDialogFragment mFragment = new MyDialogFragment();
mFragment.show(getSupportFragmentManager(), "MyDialog");

why?

Notification

I have the same problem, Did you figure that out? – Barthol

@Barthol i found issue and fixed it – Notification

@grizzly What is the issue? I have similar problem. – Cabalistic

@Yeung. you must use ... extends Dialog. not use dialog fragment. Simple Dialog class dispatchKeyEvent fix and is ok. when dialog fragment is show, dispatchKeyEvent not working. so you should use Dialog class – Notification

Answer 1

No need to change your DialogFragment code to Dialog, you can do something like this (In case still needed). Using OnKeyListener will solve your problem.

public class BaseDialogFragment extends AppCompatDialogFragment {

  @Override
  public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    getDialog().setOnKeyListener(new DialogInterface.OnKeyListener() {
        @Override
        public boolean onKey(DialogInterface dialog, int keyCode, KeyEvent event) {
            /* Your logic, you get the KeyEvent*/
            return false;
        }
    });
}

Inspirit

hi, How to add setOnKeyListener in a fragment. I am trying to read an RFID HID device from a fragment. Tried adding a listener in the root view but not working – Jaeger

@AravindOR You will need to listen key event on the fragment's activity. override dispatchKeyEvent() and check if the current fragment is the required one – Inspirit

Answer 2

Inside your DialogFragment for your keys` actions, you can use:

getDialog().dispatchKeyEvent(event);

instead of

getActivity().dispatchKeyEvent(event);

Mithridatism