android get key press programmatically

Question

I want to know which key has been pressed in android keyboard. For example, if a is pressed {a}, I want to show value {a} in screen with toast ?

i want using broadcastreciever or background service

score 0 · Answer 1 · edited Oct 14 '14 at 16:23

0

Try using dispatchKeyEvent(KeyEvent event) in your Activity:

@Override
   public boolean dispatchKeyEvent(KeyEvent event) {
      Log.i("key pressed", String.valueOf(event.getKeyCode()));
   return super.dispatchKeyEvent(event);
}

edited Oct 14 '14 at 16:23

nobody

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answered Oct 14 '14 at 16:16

thanks liviu , but how to use this code to background service ?? – abedi98 Oct 14 '14 at 16:52

score 0 · Answer 2 · edited Oct 19 '14 at 21:07

0

public class MainActivity extends Activity {

    KeyEvent event;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        dispatchKeyEvent(event);

    }

    @Override
       public boolean dispatchKeyEvent(KeyEvent event) {
          Log.i("key pressed", String.valueOf(event.getKeyCode()));
       return super.dispatchKeyEvent(event);
    }



}

When I run this code, the keyboard app crashes. A dialog with message posted below is displayed.

Unfortunately,keyboard has stopped

edited Oct 19 '14 at 21:07

tomrozb

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answered Oct 15 '14 at 14:59

abedi98

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thanks tomrozb , but how to use this code to background service ?? – abedi98 Nov 21 '14 at 16:20
You didn't initialize event, so it is null – Marty Miller Jan 16 '16 at 09:51

android get key press programmatically

2 Answers2