android DialogFragment onKeyUp onKeyDown from onKey

Question

How to mesure how long ex. volume up key has been pressed in DialogFragment?

Unfortunately DialogFragment doesn't have methods onKeyUp, onKeyDown. :((

So who (which object) receives by default information about pressed keys?

I've learnt that I can use getDialog().setOnKeyListener(this) assuming that my class implements OnKeyListener.

Great but then I have the following method:

@Override
public boolean onKey(DialogInterface arg0, int arg1, KeyEvent arg2) {
  // TODO Auto-generated method stub
  return false;
}

But I need onKeyDown, onKeyUp (with possibility to call event.startTracking()

How to achieve this? How to mesure how long ex. volume up key has been pressed (in DialogFragment)?

onKey() we get the KeyEvent. Using this you can check if the event is action_up or down and start the task that you want to do. Here is the link for your reference : http://developer.android.com/reference/android/view/KeyEvent.html — AndroGeek, Mar 10 '14 at 10:04
ok, but I don't have the smallest idea how to do event.startTracking() in that case....? — user2707175, Mar 10 '14 at 12:47
Hope this post would be helpful for you: http://stackoverflow.com/questions/8226771/how-to-differentiate-between-long-key-press-and-regular-key-press — AndroGeek, Mar 11 '14 at 06:23

score 2 · Answer 1 · answered Apr 22 '15 at 17:08

2

You can use

@Override
public boolean onKey(DialogInterface arg0, int arg1, KeyEvent arg2) {
  // TODO Auto-generated method stub
     if (arg2.getAction() == KeyEvent.ACTION_UP){
        // Key up event
     }
     else{
     // Key down event
     }   

  return false;
}

answered Apr 22 '15 at 17:08

Darci Neto

36
3

Where did you find the onKey callback method inDialogFragment? Though this line was helpful. – Raj Kanchan Oct 01 '22 at 10:37

android DialogFragment onKeyUp onKeyDown from onKey

1 Answers1