Essentials: [Enhancement] Try LinearAcceleration Sensor if Accelerometer doesn't exist.

[Howell1618]

Bug report best practices: Submitting Issues

Description

The Accelerometer sensor runs on Android7.0(RedMi Note 4X) OK.
However, when it runs on Android8.1(Smartisan Pro2s), it gets error ：specified method is not supported. I truely know my phone has accelerometer sensor, but the code doesn't work on Android8.1.

Steps to Reproduce

Accelerometer.Start(SensorSpeed.Normal)

Expected Behavior

Nomally start accelerometer sensor

Actual Behavior

Get error: specified method is not supported

Basic Information

Visual Studio 2019 16.4.5

• Version with issue: Android8.1
• Last known good version: Android7.0
• IDE:
• Platform Target Frameworks:
  
  
  
  • iOS: N/A
  
  
  • Android: Android 9.0
  
  
  • UWP: N/A
  
  
• Android Support Library Version:
• Nuget Packages: NuGet Package Manager - 5.4.0
• Affected Devices: RedMi Note 4X / Smartisan Pro2s

Screenshots

Reproduction Link

[Howell1618]

And how can I use LinearAcceleration sensor?

I can only find Accelerometor...

[jamesmontemagno]

We use a check for the Accelerometer. If it is returning null then it means there isn't a sensor. It could be that these devices don't supply an Accelerometer on them.

Platform.SensorManager?.GetDefaultSensor(SensorType.Accelerometer) != null;

The difference being that Linear Acceleration sensor excludes gravity. We could do a feature improvement that checks to see if the Accelerometer doesn't exist then try to use linear acceleration sensor.

I find it strange that the devices dont' report back an accelerometer, but it is android so who knows :)

[Howell1618]

Hi, James!
Thank you for receive your mail~
I meant that my device truely have an accelerometer sensor but I can't trigger that sensor before I sent you the issue.
However, there is a surprise!!! When I try thousands of ways such as use Android.Hardware to instead of Xamarin,( although I can't use Android.Hardware properly at that time) . When I failed again and prepare to go to bed, I tried Xamarin again, you can't believe that sensor began to work!!!
Yes, now I can use Xamarin to trigger accelerometer, But I was trying to return the issue situation such as power low or FlightMode, however, it can‘t’ go back to that issue situation. So I don't know WHAT ACTION I DID make the sensor began working...
Now I am happy to see sensor working, but a little depressing in I can't find the root cause of the issue.
Could you find some cause from these cue I said? And now I prepare to find more android phone to test to find the cause and then feedback you.
Last, I am very appreciate what you said "but it is android so who knows" :) haha

[jamesmontemagno]

Thanks for the update and will close out. Yeah perhaps the sensor was just turned off for the time being :(