绑定服务与Altbeacon第二个绑定后不工作

Question

这是我的Singleton类，而我可以添加观察员：

以下链接全类实现：

http://pastebin.com/bLpTH4u9

相关的代码：

public void addSensor(AbstractBeaconSensor sensor){ 
    lock.lock(); 

    if(sensors.isEmpty() && !isBinded) { 
     beaconManager.bind(this); 
     Log.d(TAG, "Binding+++++++++++++++++++"); 
     isBinded = true; 
    } 

    sensors.add(sensor); 
    lock.unlock(); 
} 

public void removeSensor(AbstractBeaconSensor sensor){ 
    lock.lock(); 

    sensors.remove(sensor); 

    if(sensors.isEmpty() && isBinded){ 
     try { 
      beaconManager.stopRangingBeaconsInRegion(myRegion); 
     } catch (RemoteException e) { 
      e.printStackTrace(); 
     } 
     beaconManager.unbind(this); 
     isBinded = false; 
    } 
    lock.unlock(); 
} 

@Override 
public void onBeaconServiceConnect() { 
    Log.d(TAG, "On beacon connect+++++++++++++++++"); 
    beaconManager.setRangeNotifier(new RangeNotifier() { 
     @Override 
     public void didRangeBeaconsInRegion(Collection<Beacon> beacons, Region region) { 

      Log.d(TAG, "++ " + beacons.size()); 
      long time = System.currentTimeMillis(); 
      try { 
       //lock.lock(); 
       for(AbstractBeaconSensor sensor : sensors) { 
        sensor.setData(beacons, time); 
       } 
      } finally { 
       //lock.unlock(); 
      } 
     } 
    }); 
    try { 
     beaconManager.startRangingBeaconsInRegion(myRegion); 
    } catch (RemoteException e) { 
     Log.d(TAG, "Got exception" + e.getMessage()); 
    } 
} 

问题是添加一个AbstractSensor后，扫描工作正常。

在调用stopRangingBeaconInRegion（）和unbind（），然后再次调用bind（）之后，该服务似乎只保留在后台扫描模式下（每30秒我会得到一个信标列表）。

05-12 13:34:39.969 25700-25700/interdroid.swan D/BeaconSingleton: On beacon connect+++++++++++++++++ 
05-12 13:34:42.497 25700-25700/interdroid.swan D/BeaconSingleton: Binding+++++++++++++++++++ 
05-12 13:34:42.502 25700-25700/interdroid.swan D/BeaconSingleton: On beacon connect+++++++++++++++++ 
05-12 13:34:43.728 25700-27614/interdroid.swan D/BeaconSingleton: ++ 5 
05-12 13:34:44.848 25700-27635/interdroid.swan D/BeaconSingleton: ++ 1 
05-12 13:34:46.029 25700-27655/interdroid.swan D/BeaconSingleton: ++ 3 
05-12 13:34:47.161 25700-27672/interdroid.swan D/BeaconSingleton: ++ 7 
05-12 13:34:54.091 25700-27778/interdroid.swan D/BeaconSingleton: ++ 6 
05-12 13:34:55.237 25700-27799/interdroid.swan D/BeaconSingleton: ++ 7 
05-12 13:34:56.423 25700-27817/interdroid.swan D/BeaconSingleton: ++ 4 
05-12 13:34:57.566 25700-27833/interdroid.swan D/BeaconSingleton: ++ 1 
05-12 13:34:58.747 25700-27850/interdroid.swan D/BeaconSingleton: ++ 3 
05-12 13:34:59.894 25700-27873/interdroid.swan D/BeaconSingleton: ++ 5 
05-12 13:35:01.053 25700-27891/interdroid.swan D/BeaconSingleton: ++ 7 
05-12 13:35:02.199 25700-27913/interdroid.swan D/BeaconSingleton: ++ 6 
05-12 13:35:03.354 25700-27930/interdroid.swan D/BeaconSingleton: ++ 3 
05-12 13:35:04.504 25700-27951/interdroid.swan D/BeaconSingleton: ++ 3 
05-12 13:35:05.648 25700-27968/interdroid.swan D/BeaconSingleton: ++ 2 
05-12 13:35:11.405 25700-28056/interdroid.swan D/BeaconSingleton: ++ 8 
05-12 13:35:12.548 25700-28071/interdroid.swan D/BeaconSingleton: ++ 4 
05-12 13:35:13.703 25700-28088/interdroid.swan D/BeaconSingleton: ++ 6 
05-12 13:35:38.580 25700-25700/interdroid.swan D/BeaconSingleton: Binding+++++++++++++++++++ 
05-12 13:35:38.585 25700-25700/interdroid.swan D/BeaconSingleton: On beacon connect+++++++++++++++++ 
05-12 13:35:39.789 25700-28555/interdroid.swan D/BeaconSingleton: ++ 3 
05-12 13:36:24.995 25700-25700/interdroid.swan D/BeaconSingleton: Binding+++++++++++++++++++ 
05-12 13:36:25.022 25700-25700/interdroid.swan D/BeaconSingleton: On beacon connect+++++++++++++++++ 
05-12 13:36:26.224 25700-29401/interdroid.swan D/BeaconSingleton: ++ 6 

正如您在logcat中所看到的，调用第二个绑定后，范围通知器上的调用非常罕见。

如果有人遇到类似的问题，任何帮助表示赞赏。

Answer 1

目前尚不清楚应用程序的生命周期是什么序列，但有些东西会导致库在第二次bind（）调用时认为它处于后台模式。您可以通过添加下面的行onBeaconServiceConnect()纠正这一点，

beaconManager.setBackgroundMode(false);