AsyncTask中調用定時查詢

private Handler handler = new Handler() {


public void handleMessage(Message msg) {
super.handleMessage(msg);
if (msg.what == 1) {
goToSearchStatus();//爲一個AsyncTask
}
}
};
private Timer timer;
private TimerTask timerTask;


/**
* 開始
*/
public void startTimer() {
if (timer == null) {
timer = new Timer(true);
}
// 任務
if (timerTask == null) {
timerTask = new TimerTask() {
public void run() {
Message msg = new Message();
msg.what = 1;
handler.sendMessage(msg);
}
};
}
if (timer != null && timerTask != null) {
timer.schedule(timerTask, 1000, 2000);
}


}

//退出時調用
/**
* 停止
*/
private void stopTimer() {


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


if (timerTask != null) {
timerTask.cancel();
timerTask = null;
}


}