Android 如何使用 TimerTask 来运行线程？
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How do you use a TimerTask to run a thread?
提问by Alex Haycock
I'm struggling to find documentation for the TimerTask function on Android. I need to run a thread at intervals using a TimerTask but have no idea how to go about this. Any advice or examples would be greatly appreciated.
我正在努力寻找 Android 上 TimerTask 函数的文档。我需要使用 TimerTask 每隔一段时间运行一个线程，但不知道如何去做。任何建议或示例将不胜感激。
回答by Alex
I have implemented something like this and it works fine:
我已经实现了这样的东西，它工作正常：
private Timer mTimer1;
private TimerTask mTt1;
private Handler mTimerHandler = new Handler();
private void stopTimer(){
if(mTimer1 != null){
mTimer1.cancel();
mTimer1.purge();
}
}
private void startTimer(){
mTimer1 = new Timer();
mTt1 = new TimerTask() {
public void run() {
mTimerHandler.post(new Runnable() {
public void run(){
//TODO
}
});
}
};
mTimer1.schedule(mTt1, 1, 5000);
}
回答by Jave
You use a Timer, and that automatically creates a new Thread for you when you schedule a TimerTaskusing any of the schedule-methods.
您使用 a Timer，当您TimerTask使用任何 - 方法安排 a 时，它会自动为您创建一个新线程schedule。
Example:
例子：
Timer t = new Timer();
t.schedule(myTimerTask, 1000L);
This creates a Timer running myTimerTaskin a Thread belonging to that Timer once every second.
这将创建一个myTimerTask在属于该 Timer 的线程中运行的Timer 每秒一次。
回答by Kalai Prakash
This is perfect example for timer task.
这是计时器任务的完美示例。
Timer timerObj = new Timer();
TimerTask timerTaskObj = new TimerTask() {
public void run() {
//perform your action here
}
};
timerObj.schedule(timerTaskObj, 0, 15000);
