Question by Naxilos · Jul 10, 2019 at 10:52 AM · android location

[Android 9.0 Huawei] LocationService updates only once per ~40 seconds

Hello Unity Devs,

Recently i worked with LocationService and I found out that refresh rate of LocationService.lastData is extreamly low on selected devices. Here are results of my refresh rate test (simple walk down the street):

Huawei Y2 [Andoid 6.0]: 2-12 sec
Huawei P10 [Android 8]: 3-8 sec
Motorolla Moto G7 [Android 9.0]: 1-8 sec
Samsung Galaxy s8 [Android 9.0]: 5-15 sec

and the cause of this post:

Huawei P20 (two devices tested) [Android 9.0]: 40 sec

Code is nothing special and you can see it below:

     public TMPro.TextMeshProUGUI debugText;
     LocationService locationService;
 
     double lasttimestamp = 0;
     double timefromlastrefresh = 0;
 
     // Start is called before the first frame update
     void Start()
     {
         locationService = new LocationService();
         locationService.Start();
     }
 
     // Update is called once per frame
     void Update()
     {
         if (locationService.isEnabledByUser == true)
         {
             if (lasttimestamp < locationService.lastData.timestamp)
             {
                 lasttimestamp = locationService.lastData.timestamp;
                 timefromlastrefresh = 0;
             }
             timefromlastrefresh += Time.deltaTime;
 
 
             debugText.text = $"latitude: {  locationService.lastData.latitude}{Environment.NewLine}longitude: { locationService.lastData.longitude }{Environment.NewLine}timestamp: {locationService.lastData.timestamp}{Environment.NewLine}Time from last refresh [s]: {Mathf.Floor((float)timefromlastrefresh) }{Environment.NewLine}altitude: {locationService.lastData.altitude}{Environment.NewLine}horizontalAccuracy: { locationService.lastData.horizontalAccuracy }{Environment.NewLine}verticalAccuracy: { locationService.lastData.verticalAccuracy} ";
         }
     }

Is that an issue with some of preferences for battery usage? How can I control that from code to deliver the best accuracy possible?

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