Android初级教程_onKeyDown监听回来键无效

Android初级教程_onKeyDown监听返回键无效

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 */@Overridepublic 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);}