当我们需要每隔一段时间执行一个任务的时候,就需要使用TimerTask了,下面是入门的例子,
值得注意的是Timer、TimerTask,cancel之后就需要重新声明一个对象,否则会报错的哦~
package zhexian.app.myapplication; import android.util.Log; import java.util.Timer;
import java.util.TimerTask; /**
* Created by kimmy on 2015/9/30.
*/
public class TimerTaskDemo {
/**
* 任务延时执行
*/
private static final int DELAY_DURATION = 0; /**
* 任务执行间隔
*/
private static final int LOOP_DURATION = 100; private Timer timer;
private TimerTask mTimerTask; public void start() {
if (timer != null)
timer.cancel(); timer = new Timer(); if (mTimerTask != null)
mTimerTask.cancel(); mTimerTask = new TimerTask() {
@Override
public void run() {
Log.d("定时触发器", "mTimerTask");
}
};
timer.schedule(mTimerTask, DELAY_DURATION, LOOP_DURATION);
} public void stop() {
if (timer != null)
timer.cancel(); if (mTimerTask != null)
mTimerTask.cancel();
}
}