android.view.KeyEvent#isNumLockOn ( )源码实例Demo

@Override
public boolean onKeyEvent(KeyEvent event, EventId eventId) {
  // Lock state changes should only occur on key up. If we don't check for key up, two events
  // will fire. This is especially noticeable if the user holds down the Caps Lock key for
  // a while before releasing.
  if (event.getAction() == KeyEvent.ACTION_UP) {
    if (event.getKeyCode() == KeyEvent.KEYCODE_CAPS_LOCK) {
      if (event.isCapsLockOn()) {
        compositor.handleEvent(Compositor.EVENT_CAPS_LOCK_ON, eventId);
      } else {
        compositor.handleEvent(Compositor.EVENT_CAPS_LOCK_OFF, eventId);
      }
    } else if (event.getKeyCode() == KeyEvent.KEYCODE_NUM_LOCK) {
      if (event.isNumLockOn()) {
        compositor.handleEvent(Compositor.EVENT_NUM_LOCK_ON, eventId);
      } else {
        compositor.handleEvent(Compositor.EVENT_NUM_LOCK_OFF, eventId);
      }
    } else if (event.getKeyCode() == KeyEvent.KEYCODE_SCROLL_LOCK) {
      if (event.isScrollLockOn()) {
        compositor.handleEvent(Compositor.EVENT_SCROLL_LOCK_ON, eventId);
      } else {
        compositor.handleEvent(Compositor.EVENT_SCROLL_LOCK_OFF, eventId);
      }
    }
  }

  return false; // Never intercept keys; only report on their state.
}
 

/**
 * Checks whether the given event is any of DPAD down or NUMPAD down.
 * @param event Event to be checked.
 * @return Whether the event should be processed as a navigation down.
 */
public static boolean isGoDown(KeyEvent event) {
    return isActionDown(event) && (event.getKeyCode() == KeyEvent.KEYCODE_DPAD_DOWN
            || (!event.isNumLockOn() && event.getKeyCode() == KeyEvent.KEYCODE_NUMPAD_2));
}
 

/**
 * Checks whether the given event is any of DPAD up or NUMPAD up.
 * @param event Event to be checked.
 * @return Whether the event should be processed as a navigation up.
 */
public static boolean isGoUp(KeyEvent event) {
    return isActionDown(event) && (event.getKeyCode() == KeyEvent.KEYCODE_DPAD_UP
            || (!event.isNumLockOn() && event.getKeyCode() == KeyEvent.KEYCODE_NUMPAD_8));
}
 

/**
 * Checks whether the given event is any of DPAD right or NUMPAD right.
 * @param event Event to be checked.
 * @return Whether the event should be processed as a navigation right.
 */
public static boolean isGoRight(KeyEvent event) {
    return isActionDown(event) && (event.getKeyCode() == KeyEvent.KEYCODE_DPAD_RIGHT
            || (!event.isNumLockOn() && event.getKeyCode() == KeyEvent.KEYCODE_NUMPAD_6));
}
 

/**
 * Checks whether the given event is any of DPAD down or NUMPAD down.
 * @param event Event to be checked.
 * @return Whether the event should be processed as a navigation down.
 */
public static boolean isGoDown(KeyEvent event) {
    return isActionDown(event) && (event.getKeyCode() == KeyEvent.KEYCODE_DPAD_DOWN
            || (!event.isNumLockOn() && event.getKeyCode() == KeyEvent.KEYCODE_NUMPAD_2));
}
 

/**
 * Checks whether the given event is any of DPAD up or NUMPAD up.
 * @param event Event to be checked.
 * @return Whether the event should be processed as a navigation up.
 */
public static boolean isGoUp(KeyEvent event) {
    return isActionDown(event) && (event.getKeyCode() == KeyEvent.KEYCODE_DPAD_UP
            || (!event.isNumLockOn() && event.getKeyCode() == KeyEvent.KEYCODE_NUMPAD_8));
}
 

/**
 * Checks whether the given event is any of DPAD right or NUMPAD right.
 * @param event Event to be checked.
 * @return Whether the event should be processed as a navigation right.
 */
public static boolean isGoRight(KeyEvent event) {
    return isActionDown(event) && (event.getKeyCode() == KeyEvent.KEYCODE_DPAD_RIGHT
            || (!event.isNumLockOn() && event.getKeyCode() == KeyEvent.KEYCODE_NUMPAD_6));
}
 

/**
 * Checks whether the given event is any of DPAD down or NUMPAD down.
 * @param event Event to be checked.
 * @return Whether the event should be processed as a navigation down.
 */
public static boolean isGoDown(KeyEvent event) {
    return isActionDown(event) && (event.getKeyCode() == KeyEvent.KEYCODE_DPAD_DOWN
            || (!event.isNumLockOn() && event.getKeyCode() == KeyEvent.KEYCODE_NUMPAD_2));
}
 

/**
 * Checks whether the given event is any of DPAD up or NUMPAD up.
 * @param event Event to be checked.
 * @return Whether the event should be processed as a navigation up.
 */
public static boolean isGoUp(KeyEvent event) {
    return isActionDown(event) && (event.getKeyCode() == KeyEvent.KEYCODE_DPAD_UP
            || (!event.isNumLockOn() && event.getKeyCode() == KeyEvent.KEYCODE_NUMPAD_8));
}
 

/**
 * Checks whether the given event is any of DPAD right or NUMPAD right.
 * @param event Event to be checked.
 * @return Whether the event should be processed as a navigation right.
 */
public static boolean isGoRight(KeyEvent event) {
    return isActionDown(event) && (event.getKeyCode() == KeyEvent.KEYCODE_DPAD_RIGHT
            || (!event.isNumLockOn() && event.getKeyCode() == KeyEvent.KEYCODE_NUMPAD_6));
}