android Timer TimerTask Handler 设备震动

<span style="font-size:18px;">Timer timer = new Timer();
Handler handler = new Handler(){
public void handleMessage(Message msg) {
switch (msg.what) {
case 1:
onRefreshBedList();
break;
}
super.handleMessage(msg);
}

};
TimerTask task = new TimerTask(){
public void run() {
Message message = new Message();
message.what = 1;
handler.sendMessage(message);
}

};

timer.schedule(task, 120000,540000);

</span><pre name="code" class="java"><span style="font-size:18px;">public static void vibrator(Context c) {
Vibrator vibrator = (Vibrator)c.getSystemService(Context.VIBRATOR_SERVICE);
long [] pattern = {100,400,100,400};   // 停止 开启 停止 开启
vibrator.vibrate(pattern,-1);
}
public static boolean hasVibrator(Context c){//判断设备能否震动
Vibrator vibrator = (Vibrator)c.getSystemService(Context.VIBRATOR_SERVICE);
return vibrator.hasVibrator();
}</span>

<!-- 访问震动的权限 -->
<uses-permission android:name="android.permission.VIBRATE" />