ActivityRecognition API在一段时间后不发送运动

Question

我有一个使用Activity认可的Detected活动广播接收器。我注意到它确实连接了，但我没有得到任何数据。这是在三星Note 2上。在其他手机上，我尝试过它总是有效的。这是连接到谷歌api的代码：

  public synchronized void buildGoogleApiClient() {
    if(PSLocationCenter.getInstance().pref.getAutoPilot(context) || (PSTripDBFactory.getInstance(context).getActiveTrip()!= null)){
        Log.i("","autopilot, will activate");
        if(mGoogleApiClient == null || !mGoogleApiClient.isConnected()) {
            mGoogleApiClient = new GoogleApiClient.Builder(context)
                    .addConnectionCallbacks(this)
                    .addOnConnectionFailedListener(this)
                    .addApi(ActivityRecognition.API)
                    .build();
            Log.i("", "autopilot build google api client");
            mGoogleApiClient.connect();
            Log.i("", "autopilot register receiver");
            LocalBroadcastManager.getInstance(context).registerReceiver(mBroadcastReceiver,
                    new IntentFilter(Constants.BROADCAST_ACTION));
        }else{
            Log.i("", "autopilot is already connected");
            if(!PSLocationCenter.getInstance().pref.getMotionDetection(context)){
                requestActivityUpdatesButtonHandler();
            }
            if(PSTripDBFactory.getInstance(context).getActiveTrip()== null) {
                PSLocationCenter.getInstance().requestLocationUpdatesFromMotion();
            }
        }
    }else{
        if(mGoogleApiClient != null && mGoogleApiClient.isConnected()){
            removeActivityUpdatesButtonHandler();
        }
        Log.i("","autopilot, will NOOOT activate");
    }
}

这是请求动作的代码：

  public void requestActivityUpdatesButtonHandler() {
        Log.i("", "autopilot request activity update");
        Utils.appendLog("AUTOPILOT requestActivityUpdatesButtonHandler", false);
        if(mGoogleApiClient != null && mGoogleApiClient.isConnected()){
            Log.i("","AUTOPILOT requestActivityUpdatesButtonHandler GOOGLE API CLIENT CONNECTED");
            Utils.appendLog("AUTOPILOT requestActivityUpdatesButtonHandler GOOGLE API CLIENT CONNECTED", false);
            PSLocationCenter.getInstance().pref.setMotionDetection(context, true);
            ActivityRecognition.ActivityRecognitionApi.requestActivityUpdates(
                    mGoogleApiClient,
                    Constants.DETECTION_INTERVAL_IN_MILLISECONDS,
                    getActivityDetectionPendingIntent()
            ).setResultCallback(this);
        }else if(mGoogleApiClient != null && mGoogleApiClient.isConnecting()){
            Log.i("","AUTOPILOT requestActivityUpdatesButtonHandler GOOGLE API CLIENT CONNECTING");
            Utils.appendLog("AUTOPILOT requestActivityUpdatesButtonHandler GOOGLE API CLIENT CONNECTING", false);
            Handler han = new Handler();
            han.postDelayed(new Runnable() {
                @Override
                public void run() {
                    requestActivityUpdatesButtonHandler();
                }
            },500);
        }else{
            Log.i("","AUTOPILOT requestActivityUpdatesButtonHandler GOOGLE API CLIENT NOT CONNECTED");
            Utils.appendLog("AUTOPILOT requestActivityUpdatesButtonHandler GOOGLE API CLIENT NOT CONNECTED", false);
            buildGoogleApiClient();
        }
    }

其中“GetActivityDetectionPendingContent”是：

  private PendingIntent getActivityDetectionPendingIntent() {
        Log.i("", "autopilot get activity detection pending intent");
        // Reuse the PendingIntent if we already have it.
        if (mActivityDetectionPendingIntent != null) {
            return mActivityDetectionPendingIntent;
        }
        Intent intent = new Intent(context, DetectedActivitiesIntentService.class);

        // We use FLAG_UPDATE_CURRENT so that we get the same pending intent backListener when calling
        // requestActivityUpdates() and removeActivityUpdates().
        return PendingIntent.getService(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
    }

奇怪的是，我然后重新启动了手机。进入应用程序，重新启动后，我只是稍微摇晃了一下手机，开始获取位置。广播接收器是否有可能以某种方式被强制关闭？或者识别活动被破坏？其他人有这个问题吗？有没有办法检查我的广播接收器的状态？我没有日志，因为我在日志中没有问题。它只是构建api客户端，然后用这个请求动议：

  ActivityRecognition.ActivityRecognitionApi.requestActivityUpdates(
                    mGoogleApiClient,
                    Constants.DETECTION_INTERVAL_IN_MILLISECONDS,
                    getActivityDetectionPendingIntent()
            ).setResultCallback(this);

Answer 1

我自己也在调查这个。从留档：

为了节省电池，当设备长时间处于“静止”状态时，活动报告可能会停止。一旦设备再次移动，它将恢复。这仅在支持传感器的设备上发生。键入\u SIGNIFICANT\u运动硬件。

从API 21开始，如果设备处于省电模式并且屏幕关闭，则接收活动的频率可能低于检测IntervalMillis参数。

因此，为了节省电池，ActivityRecognition将在可能的情况下进入睡眠状态（并停止触发事件）。