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@Overridepublic 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 {        }    };}@Overridepublic 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@Overridepublic IBinder onBind(Intent intent) {    return null;}@Overridepublic void onCreate() {    super.onCreate();   // Logger.d(TAG, TAG + "---->onCreate,启动服务");    mMediaPlayer = MediaPlayer.create(getApplicationContext(), R.raw.no_notice);    mMediaPlayer.setLooping(true);}@Overridepublic 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();    }}@Overridepublic 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();

@Overridepublic 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;}@Overridepublic 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

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