现在好多应用都接入了推送功能，市面上也有很多关于推送的第三方，例如极光等等，那么我们需求不大，接入极光会造成很大的资源浪费，下面我们来看下利用android服务进行本地推送消息。

1.注册一个Service

import android.annotation.TargetApi;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.os.Build;
import android.os.IBinder;
import java.util.Calendar;
 
/**
 * Created by 70883 on 2017/8/10.
 */
public class PushSmsService extends Service {
 private NotificationManager manager;
 private PendingIntent pi;
 private MyThread myThread;
 @Override
 public IBinder onBind(Intent intent) {
  // TODO Auto-generated method stub
   return null;
   }
 
 @Override
 public void onCreate() {
  myThread = new MyThread();
  myThread.start();
  super.onCreate();
 }
 
 @Override
 public void onDestroy() {
  super.onDestroy();
 }
   @TargetApi(Build.VERSION_CODES.JELLY_BEAN)
   private void notification() {
    // 获取系统的通知管理器 
    manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
    Intent intent = new Intent(getApplicationContext(),
      MainActivity.class);
    pi = PendingIntent.getActivity(getApplicationContext(), 0, intent, 0);
    Notification notification = new Notification.Builder(getApplicationContext())
      .setAutoCancel(true)
      .setContentText("工作在忙,也要吃饭哦")
      .setContentIntent(pi)
      .setSmallIcon(R.mipmap.ic_icon)
      .setWhen(System.currentTimeMillis())
      .build();
    notification.defaults = Notification.DEFAULT_ALL; // 使用默认设置，比如铃声、震动、闪灯 
     notification.flags = Notification.FLAG_AUTO_CANCEL; // 但用户点击消息后，消息自动在通知栏自动消失 
    notification.flags |= Notification.FLAG_NO_CLEAR;// 点击通知栏的删除，消息不会依然不会被删除 
    manager.notify(0, notification);
   }
 private class MyThread extends Thread{
  private Calendar c ;
  @Override
  public void run() {
   while (true){
    c = Calendar.getInstance();
    if(c.get(Calendar.HOUR_OF_DAY) == 15){
      try {
       notification();
       sleep(1000*60*60);
      } catch (InterruptedException e) {
       e.printStackTrace();
      }
    }
   }
 
  }
 }
}

2.在AndroidMan中注册

<service android:name=".ui.Service.PushSmsService"></service>

3.由于我是需要全局应用就在Application中进行启动了 

public void startService() {
  Intent intent = new Intent(this, PushSmsService.class);
  // 启动服务
  startService(intent);
 }

4.也可以配合服务端使用，定时推送消息

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