使用AlarmManager进行定时任务处理

1：UploadingService.java

package com.example.service;



import com.example.broadcast.AlarmReceiver;

import com.example.utils.DateUtil;



import android.app.Activity;

import android.app.AlarmManager;

import android.app.PendingIntent;

import android.app.Service;

import android.content.Context;

import android.content.Intent;

import android.os.IBinder;

import android.os.SystemClock;



public class UploadingService extends Service{



    @Override

    public IBinder onBind(Intent intent) {

        return null;

    }

    

    @Override

    public int onStartCommand(Intent intent, int flags, int startId) {

        //to-do

        System.out.println("===========:"+DateUtil.getDateByFormat("yyyy-MM-dd HH:mm:ss"));

        

        AlarmManager am = (AlarmManager)getSystemService(ALARM_SERVICE);        

        int seconds = 1000*3;

        long triggerAtTime = SystemClock.elapsedRealtime()+seconds;

        Intent i = new Intent(this, AlarmReceiver.class);

        PendingIntent pi = PendingIntent.getBroadcast(this, 0, i, 0);

        am.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, triggerAtTime, pi);

        

        return super.onStartCommand(intent, flags, startId);

    }



    

    public static void openService(Context context){

        Intent intent = new Intent(context, UploadingService.class);

        ((Activity)context).startService(intent);

    }

}

 

2：AlarmReceiver.java

package com.example.broadcast;



import com.example.service.UploadingService;



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) {

        Intent i = new Intent(context, UploadingService.class);

        context.startService(i);

    }

}

 

3：MainActivity.java

UploadingService.openService(MainActivity.this);

 

4：AndroidManifest.xml

<service 

            android:name="com.example.service.UploadingService"/>

        <receiver 

            android:name="com.example.broadcast.AlarmReceiver"/>