Android Timer 更好方法

Android的Timer 一般如下面所写

Timertimer=newTimer();
TimerTasktask=newTimerTask(){
publicvoidrun(){
Messagemessage=newMessage();
message.what=1;
handler.sendMessage(message);

}

};

finalHandlerhandler=newHandler(){

publicvoidhandleMessage(Messagemsg){
switch(msg.what){
case1:
Log.e("Timer","Timer");
update();
break;
}
super.handleMessage(msg);
}

};

protectedvoidonDestroy(){
if(timer!=null){
timer.cancel();
timer=null;
}
super.onDestroy();
}

最重要一点是timer.schedule(task, 1000, 5000);如果设置为timer.schedule(task, 5000)是不会工作的。

protectedvoidonCreate(BundlesavedInstanceState){
super.onCreate(savedInstanceState);
this.setContentView(R.layout.main);
timer.schedule(task,1000,5000);
}

但更好的方法是通过下面的代码

privateHandlerhandler=newHandler();

privateRunnablerunnable=newRunnable(){

publicvoidrun(){
update();
handler.postDelayed(this,1000);
}

};

开始Timer

handler.postDelayed(runnable,1000);

停止Timer

handler.removeCallbacks(runnable);