LongRunningService:
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
import android.os.SystemClock;
public class LongRunningService extends Service {
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
AlarmManager manager = (AlarmManager) getSystemService(ALARM_SERVICE);
//读者可以修改此处的Minutes从而改变提醒间隔时间
//此处是设置每隔90分钟启动一次
//这是90分钟的毫秒数
int Minutes = 90*60*1000;
//SystemClock.elapsedRealtime()表示1970年1月1日0点至今所经历的时间
long triggerAtTime = SystemClock.elapsedRealtime() + Minutes;
//此处设置开启AlarmReceiver这个Service
Intent i = new Intent(this, AlarmReceiver.class);
PendingIntent pi = PendingIntent.getBroadcast(this, 0, i, 0);
//ELAPSED_REALTIME_WAKEUP表示让定时任务的出发时间从系统开机算起，并且会唤醒CPU。
manager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, triggerAtTime, pi);
return super.onStartCommand(intent, flags, startId);
}
@Override
public void onDestroy() {
super.onDestroy();
//在Service结束后关闭AlarmManager
AlarmManager manager = (AlarmManager) getSystemService(ALARM_SERVICE);
Intent i = new Intent(this, AlarmReceiver.class);
PendingIntent pi = PendingIntent.getBroadcast(this, 0, i, 0);
manager.cancel(pi);
}
}
AlarmReceiver:
import android.app.Notification;
import android.app.NotificationManager;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
public class AlarmReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
//设置通知内容并在onReceive()这个函数执行时开启
NotificationManager manager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
Notification notification=new Notification(R.drawable.ic_launcher,"用电脑时间过长了！白痴！"
,System.currentTimeMillis());
notification.setLatestEventInfo(context, "快去休息！！！",
"一定保护眼睛,不然遗传给孩子，老婆跟别人跑啊。", null);
notification.defaults = Notification.DEFAULT_ALL;
manager.notify(1, notification);
//再次开启LongRunningService这个服务，从而可以
Intent i = new Intent(context, LongRunningService.class);
context.startService(i);
}
}
