标签:android private public method return
今天给大家简单说一下,android双击返回键退出程序。
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
// TODO Auto-generated method stub
if(keyCode == KeyEvent.KEYCODE_BACK)
{
ExitClick();
}
return false;
}
private static Boolean isExit = false;
private void ExitClick() {
Timer tExit = null;
if (isExit == false) {
isExit = true; // 准备退出
Toast.makeText(this, "再按一次退出程序", Toast.LENGTH_SHORT).show();
tExit = new Timer();
tExit.schedule(new TimerTask() {
@Override
public void run() {
isExit = false; // 取消退出
}
}, 2000); // 如果2秒钟内没有按下返回键,则启动定时器取消掉刚才执行的任务
} else {
finish();
System.exit(0);
}
}
标签:android private public method return
原文地址:http://9964804.blog.51cto.com/9954804/1621322