android 前后台保活 实现定位数据定时上传并展示轨迹 （上）

android 后台保活我大该使用了下面几种：
1.双进程 拉起 —6.0以下
2. JobService --6.0以上
3. 1像素保活 — 怎么说呢，感觉是7.0以下。适应度低。（问题多，就没使用了）
4. 无限保活音乐 ---- 效果最好，但是呢耗电。由于我项目特殊性，也采用了。

还使用了前台服务。 所以效果还是可以了，被杀死情况还算少。但是呢，也是很耗电的。
由于我项目特殊，是给专门的人使用，还会给他们配上充电器。所以就不管了。
下面我说下我怎么实现的。 1像素保活，由于有时候监听不到部分系统的，会闪退等
问题就没有使用了。 最后给大家加上，提供参考。

先说下大概的类：
DownloadService ：我们工作的类，也就是为了保活这个service.

GuardService; 守护服务
StepService：主服务
这俩个是双进程 拉起

PlayerMusicService： 无限播放音乐，后面为了好控制关闭，就在工作类中使用无限播放音乐
ScheduleService： JobService 保活方式

ServiceAliveUtils:判断工作服务是否还活着的工作类
public class ServiceAliveUtils {
public static boolean isServiceAlice() {
boolean isServiceRunning = false;
ActivityManager manager = (ActivityManager) MyApption.getMyApplication().getSystemService(Context.ACTIVITY_SERVICE);

    if (manager == null) {
        return true;
    }
    for (ActivityManager.RunningServiceInfo service : manager.getRunningServices(Integer.MAX_VALUE)) {
    
        if (" com.example.admin.linyuandome.houtaibaohuo.DownloadService".equals(service.service.getClassName())) {
            isServiceRunning = true;
        }
    }
    return isServiceRunning;
}

}
双进程：
/**

• 守护进程 双进程通讯

• @author LiGuangMin

• @time Created by 2018/8/17 11:27
  */
  public class GuardService extends Service {
  private final static String TAG = GuardService.class.getSimpleName();
  private ServiceConnection mServiceConnection = new ServiceConnection() {
  @Override
  public void onServiceConnected(ComponentName componentName, IBinder iBinder) {
  //Logger.d(TAG, “GuardService:建立链接”);
  boolean isServiceRunning = ServiceAliveUtils.isServiceAlice();
  if (!isServiceRunning) {
  Intent i = new Intent(GuardService.this, DownloadService.class);
  startService(i);
  }
  }

   @Override
   public void onServiceDisconnected(ComponentName componentName) {
       // 断开链接
       startService(new Intent(GuardService.this, StepService.class));
       // 重新绑定
       bindService(new Intent(GuardService.this, StepService.class), mServiceConnection, Context.BIND_IMPORTANT);
   }
  

  };

  @Nullable
  @Override
  public IBinder onBind(Intent intent) {
  return new KeepAliveConnection.Stub() {
  @Override
  public void basicTypes(int anInt, long aLong, boolean aBoolean, float aFloat, double aDouble, String aString) throws RemoteException {

       }
   };
  

  }

  @Override
  public int onStartCommand(Intent intent, int flags, int startId) {
  startForeground(1, new Notification());
  // 绑定建立链接
  bindService(new Intent(this, StepService.class), mServiceConnection, Context.BIND_IMPORTANT);
  return START_STICKY;
  }

}

/*
主进程
*/
public class StepService extends Service {
private final static String TAG = StepService.class.getSimpleName();
private ServiceConnection mServiceConnection = new ServiceConnection() {
@Override
public void onServiceConnected(ComponentName componentName, IBinder iBinder) {
//Logger.d(TAG, “StepService:建立链接”);
boolean isServiceRunning = ServiceAliveUtils.isServiceAlice();
if (!isServiceRunning) {
Intent i = new Intent(StepService.this, DownloadService.class);
startService(i);
}
}

    @Override
    public void onServiceDisconnected(ComponentName componentName) {
        // 断开链接
        startService(new Intent(StepService.this, GuardService.class));
        // 重新绑定
        bindService(new Intent(StepService.this, GuardService.class), mServiceConnection, Context.BIND_IMPORTANT);
    }
};

@Nullable
@Override
public IBinder onBind(Intent intent) {
    return new KeepAliveConnection.Stub() {
        @Override
        public void basicTypes(int anInt, long aLong, boolean aBoolean, float aFloat, double aDouble, String aString) throws RemoteException {

        }
    };
}

@Override
public int onStartCommand(Intent intent, int flags, int startId) {
    startForeground(1, new Notification());
    // 绑定建立链接
    bindService(new Intent(this, GuardService.class), mServiceConnection, Context.BIND_IMPORTANT);
    return START_STICKY;
}

}

无限播放音乐：
/*
无限播放音乐
*/
public class PlayerMusicService extends Service {
private final static String TAG = PlayerMusicService.class.getSimpleName();
private MediaPlayer mMediaPlayer;

@Nullable
@Override
public IBinder onBind(Intent intent) {
    return null;
}

@Override
public void onCreate() {
    super.onCreate();
   // Logger.d(TAG, TAG + "---->onCreate,启动服务");
    mMediaPlayer = MediaPlayer.create(getApplicationContext(), R.raw.no_notice);
    mMediaPlayer.setLooping(true);
}

@Override
public int onStartCommand(Intent intent, int flags, int startId) {
    new Thread(new Runnable() {
        @Override
        public void run() {
            startPlayMusic();
        }
    }).start();
    return START_STICKY;
}

private void startPlayMusic() {
    if (mMediaPlayer != null) {
        mMediaPlayer.start();
    }
}

private void stopPlayMusic() {
    if (mMediaPlayer != null) {
        mMediaPlayer.stop();
    }
}

@Override
public void onDestroy() {
    super.onDestroy();
    stopPlayMusic();
    // 重启自己
    Intent intent = new Intent(getApplicationContext(), PlayerMusicService.class);
    startService(intent);
}

}

/*
JobService
*/
@SuppressLint(“NewApi”)
public class ScheduleService extends JobService {
private static final String TAG = ScheduleService.class.getSimpleName();

@Override
public boolean onStartJob(JobParameters params) {

    boolean isServiceRunning = ServiceAliveUtils.isServiceAlice();
    if (!isServiceRunning) {
        Intent i = new Intent(this, DownloadService.class);
        startService(i);
        
     //   Logger.d(TAG, "ScheduleService启动了DownloadService");
    }
    jobFinished(params, false);
    return false;
}

@Override
public boolean onStopJob(JobParameters params) {
    return false;
}

}

启动所有保活服务和工作服务
Intent intent = new Intent(mContext, DownloadService.class);

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
// 6.0 以上 jobservice
useJobServiceForKeepAlive();
}
//双守护线程
startService(new Intent(mContext, StepService.class));
startService(new Intent(mContext, GuardService.class));
// 无限播放
startService(new Intent(mContext, PlayerMusicService.class));

关闭就不说了。后面说