How to use

onKeyDown

method

in

android.view.SurfaceView

return super.onKeyDown(keyCode, event);

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
  return super.onKeyDown(keyCode, event);
}

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
  return super.onKeyDown(keyCode, event);
}

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
  return super.onKeyDown(keyCode, event);
}

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
  return super.onKeyDown(keyCode, event);
}

return super.onKeyDown(keyCode, event);

@Override
public final boolean onKeyDown(final int keyCode, final KeyEvent event) {
 thread.addEvent(new Runnable() {
  @Override
  public void run() {
   eventHandler.onKeyDown(keyCode, event);
  }
 });
 switch (keyCode) {
  case KeyEvent.KEYCODE_BACK:
  case KeyEvent.KEYCODE_DPAD_CENTER:
  case KeyEvent.KEYCODE_DPAD_LEFT:
  case KeyEvent.KEYCODE_DPAD_RIGHT:
  case KeyEvent.KEYCODE_DPAD_UP:
  case KeyEvent.KEYCODE_DPAD_DOWN:
  case KeyEvent.KEYCODE_SEARCH:
   return true;
 };
 return super.onKeyDown(keyCode, event);
}

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
  switch (keyCode) {
    case KeyEvent.KEYCODE_FOCUS:
    case KeyEvent.KEYCODE_CAMERA:
      return true;
    case KeyEvent.KEYCODE_VOLUME_DOWN:
      setAmbientLightMode(AmbientLightManager.MODE_CLOSE);
      return true;
    case KeyEvent.KEYCODE_VOLUME_UP:
      setAmbientLightMode(AmbientLightManager.MODE_OPEN);
      return true;
  }
  return super.onKeyDown(keyCode, event);
}

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
  switch (keyCode) {
    case KeyEvent.KEYCODE_FOCUS:
    case KeyEvent.KEYCODE_CAMERA:
      return true;
    case KeyEvent.KEYCODE_VOLUME_DOWN:
      setAmbientLightMode(AmbientLightManager.MODE_CLOSE);
      return true;
    case KeyEvent.KEYCODE_VOLUME_UP:
      setAmbientLightMode(AmbientLightManager.MODE_OPEN);
      return true;
  }
  return super.onKeyDown(keyCode, event);
}

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
  if (keyCode == KeyEvent.KEYCODE_BACK) {
    if (canvasmanager.isCanvasShown()) return canvasmanager.currentCanvas.backPressed();
    else return ngapp.backPressed();
  }
  return super.onKeyDown(keyCode, event);
}

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
  if (mIsPrepared && keyCode != KeyEvent.KEYCODE_BACK
      && keyCode != KeyEvent.KEYCODE_VOLUME_UP
      && keyCode != KeyEvent.KEYCODE_VOLUME_DOWN
      && keyCode != KeyEvent.KEYCODE_MENU
      && keyCode != KeyEvent.KEYCODE_CALL
      && keyCode != KeyEvent.KEYCODE_ENDCALL && mMediaPlayer != null
      && mmMediaController != null) {
    if (keyCode == KeyEvent.KEYCODE_HEADSETHOOK
        || keyCode == KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE) {
      if (mMediaPlayer.isPlaying()) {
        pause();
        mmMediaController.show();
      } else {
        start();
        mmMediaController.hide();
      }
      return true;
    } else if (keyCode == KeyEvent.KEYCODE_MEDIA_STOP
        && mMediaPlayer.isPlaying()) {
      pause();
      mmMediaController.show();
    } else {
      toggleMediaControlsVisiblity();
    }
  }
  return super.onKeyDown(keyCode, event);
}

return super.onKeyDown(keyCode, event);

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
 boolean isKeyCodeSupported = keyCode != KeyEvent.KEYCODE_BACK && keyCode != KeyEvent.KEYCODE_VOLUME_UP && keyCode != KeyEvent.KEYCODE_VOLUME_DOWN && keyCode != KeyEvent.KEYCODE_MENU && keyCode != KeyEvent.KEYCODE_CALL && keyCode != KeyEvent.KEYCODE_ENDCALL;
 if (isInPlaybackState() && isKeyCodeSupported && mMediaController != null) {
  if (keyCode == KeyEvent.KEYCODE_HEADSETHOOK || keyCode == KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE || keyCode == KeyEvent.KEYCODE_SPACE) {
   if (mMediaPlayer.isPlaying()) {
    pause();
    mMediaController.show();
   } else {
    start();
    mMediaController.hide();
   }
   return true;
  } else if (keyCode == KeyEvent.KEYCODE_MEDIA_STOP && mMediaPlayer.isPlaying()) {
   pause();
   mMediaController.show();
  } else {
   toggleMediaControlsVisiblity();
  }
 }
 return super.onKeyDown(keyCode, event);
}

return super.onKeyDown(keyCode, event);

return super.onKeyDown(keyCode, event);

return super.onKeyDown(keyCode, event);

return super.onKeyDown(keyCode, event);

return super.onKeyDown(keyCode, event);

return super.onKeyDown(keyCode, event);