@Override
protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  sharedPreferences.edit().putLong(Constants.SP_PARAM_LAST_LAUNCH, System.currentTimeMillis()).apply();
  scheduleNotifications();
}

private void scheduleNotifications() {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
      try {
        JobScheduler jobScheduler = (JobScheduler) getSystemService(JOB_SCHEDULER_SERVICE);
        JobInfo jobInfo = new JobInfo.Builder(1, new ComponentName(getPackageName(), NotificationService.class.getName()))
            .setRequiresCharging(false)
            .setRequiredNetworkType(JobInfo.NETWORK_TYPE_ANY) //任何有网络的状态
            .setPersisted(true) //系统重启后保留job
            .setPeriodic(1000 * 60 * 60 * 24) //这里的单位是毫秒，1000 * 60 * 60 * 24代表一天（24小时）
            .build();
        jobScheduler.schedule(jobInfo);
      } catch (Exception ex) {
        Log.e("scheduleNotifications failure");
      }
    }
  }

@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
public class NotificationService extends JobService {
  @DefaultSharedPref
  @Inject
  SharedPreferences sharedPreferences;

  @Override
  public boolean onStartJob(JobParameters params) {
    try {
      long lastLaunchTime = sharedPreferences.getLong(Constants.SP_PARAM_LAST_LAUNCH, -1);
      if(lastLaunchTime > 0) {
        long intervalSinceLastLaunch = System.currentTimeMillis() - lastLaunchTime;
        //检查距离用户上一次启动app是否过了一定时间
        if(intervalSinceLastLaunch > 1000 * 60 * 60 * 24) {
              NotificationCompat.Builder mBuilder =
                  new NotificationCompat.Builder(NotificationService.this)
                      .setAutoCancel(true)
                      .setSmallIcon(R.mipmap.ic_launcher)
                      .setContentTitle("我的app")
                      .setContentText("又有新的内容上线了，快来我们app看看吧!");
              Intent resultIntent = new Intent(NotificationService.this, MainActivity.class);

              TaskStackBuilder stackBuilder = TaskStackBuilder.create(NotificationService.this);
              stackBuilder.addParentStack(MainActivity.class);
              stackBuilder.addNextIntent(resultIntent);
              PendingIntent resultPendingIntent =
                  stackBuilder.getPendingIntent(
                      0,
                      PendingIntent.FLAG_UPDATE_CURRENT
                  );
              mBuilder.setContentIntent(resultPendingIntent);
              NotificationManager mNotificationManager =
                  (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
              mNotificationManager.notify(1, mBuilder.build());
        }
      }
    } catch (Exception ex) {
      Log.e("Exception in NotificationService onStartJob");
    }
    return false;
  }

  @Override
  public boolean onStopJob(JobParameters params) {
    Log.d("NotificationService onStopJob");
    return true;
  }
}

  <uses-permission android:name="android.permission.INTERNET" />
  <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
  <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
  <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />

  <service android:name=".NotificationService"
      android:permission="android.permission.BIND_JOB_SERVICE" />