Question

我正在为我的应用程序使用Google API：ActivityRecognitionClient.requestActivityUpdates。该应用程序背后的逻辑是跟踪用户在短半径范围内的运动。例如，从一个房间到另一个房间。因此，我将使用倒数计时器继续轮询此API，并每30000毫秒检查一次特定设备的状态。如果用户有任何移动，我会将位置（WiFi）发送到服务器。

我正在使用相同的Google示例，但根据我的逻辑进行了更轻松的修改。但是我的问题是，待处理的Intent会随机发送先前的结果（3/10）。因此，大部分时间我都无法使用此API获得准确的结果。

根据我的分析，我发现，如果增加轮询间隔，结果的准确性也会提高。

我已经分析了堆栈溢出点[Activity Recognition PendingIntent stop been called in the middle of the night。但是我的问题不同。如果有人有更好的解决方案/解决方法，请向我更新。我正在添加我的代码库供您参考。

经过测试的设备

Nexus 6P- OS- 8.1.0

代码库

/**
     * Check the Device Moving Activity Status
     * Integrated Google Activity Status API to get the Device is Idle or not
     * If the device Idle status is 95% Accurate, then the App will send the user info to Server
     */
    private fun checkActivityStatus() {
        //Request the Activity status with the help of An Intent Service
        val task = mActivityRecognitionClient.requestActivityUpdates(
                Constants.DETECTION_INTERVAL_IN_MILLISECONDS,
                getActivityDetectionPendingIntent())

        task.addOnSuccessListener {
           // Toast.makeText(this,
                    //getString(R.string.activity_updates_enabled),
                   // Toast.LENGTH_SHORT)
                    //.show()
            setUpdatesRequestedState(true)
            updateDetectedActivitiesList()
        }

        task.addOnFailureListener {
            Log.w(TAG, getString(R.string.activity_updates_not_enabled))
           /* Toast.makeText(this,
                    getString(R.string.activity_updates_not_enabled),
                    Toast.LENGTH_SHORT)
                    .show()*/
            setUpdatesRequestedState(false)
        }
    }

    /**
     * Gets a PendingIntent to be sent for each activity detection.
     */
    private fun getActivityDetectionPendingIntent(): PendingIntent {
        val intent = Intent(this, DetectedActivitiesIntentService::class.java)

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

    /**
     * Processes the list of freshly detected activities. Asks the adapter to update its list of
     * DetectedActivities with new `DetectedActivity` objects reflecting the latest detected
     * activities.
     */
    private fun updateDetectedActivitiesList() {
        val detectedActivities: ArrayList<DetectedActivity> = Utils.detectedActivitiesFromJson(
                PreferenceManager.getDefaultSharedPreferences(this)
                        .getString(Constants.KEY_DETECTED_ACTIVITIES, ""))


        val detectedActivitiesMap = HashMap<Int, Int>()
        for (activity in detectedActivities) {
            detectedActivitiesMap[activity.type] = activity.confidence
        }


        val ideleConfidence = detectedActivitiesMap[Constants.MONITORED_ACTIVITIES[0]]

        Log.i(TAG, "***IDLE Status = $ideleConfidence Present Location ${mSpDataSupplier.getSelectedLocation()}")

        if (ideleConfidence != null && ideleConfidence!! > 95) {
            // sendIdleStatusToServer(ideleConfidence)
            if (!mLocationDataList.isEmpty()) {
                sendLocationInfo(mLocationDataList.get(mLocationDataList.size - 1))
            }
        } else {
            // The user is in Moving state- Need to clear the Data
            synchronized(mLocationDataList) {
                mLocationDataList.clear()
                mDuration = 0
            }
            mSpDataSupplier.removeLocation()
            sendBroadcastEndTraining()
            sendToast("End Training...")
        }
    }

    /**
     * Sets the boolean in SharedPreferences that tracks whether we are requesting activity
     * updates.
     */
    private fun setUpdatesRequestedState(requesting: Boolean) {
        PreferenceManager.getDefaultSharedPreferences(this)
                .edit()
                .putBoolean(Constants.KEY_ACTIVITY_UPDATES_REQUESTED, requesting)
                .apply()
    }

ActivityRecognitionClient.requestActivityUpdates待定意图传递上一个结果

0 个答案: