Android初级教程_onKeyDown监听回来键无效

当我们的Activity继承了TabActivity,在该类中重写onKeyDown是监听不到返回键的,

具体解决方法如下:

重写dispatchKeyEvent

	/**	 * 退出	 */	@Override	public boolean dispatchKeyEvent(KeyEvent event) {		if (event.getKeyCode() == KeyEvent.KEYCODE_BACK				&& event.getAction() == KeyEvent.ACTION_DOWN				&& event.getRepeatCount() == 0) {						//具体的操作代码		}		return super.dispatchKeyEvent(event);	}