Call XRSystem.isSessionSupported return true, but Failed to execute 'requestSession' on 'XRSystem'

Question

I'm trying to make a webXR application with A-Frame. I want to detect whether user device(usally mobile) is support AR or not, So I follow this instruction.

    navigator.xr.isSessionSupported("immersive-ar").then((allow) => {
      if (allow === false) {
        message.innerHTML = `AR not supported`;      
      }
    });

    if (navigator.xr === undefined) {
      message.innerHTML = `XR not supported`;
    }

The problem is that Even the paramter allow is return true, but when user touch the button at bottom right(Enter AR), It's throw an error of Could not create a session because: The runtime for this configuration could not be installed.

I can run my application on some mobile, but when the device not support, It will stuck.

Am I wrong? Is there another way to detect supported status?

navigator.xr.isSessionSupported("immersive-ar").then((allow) => {
      if (allow === false) {
        // Expect: When EnterAR(true) wont working, show this. 
        message.innerHTML = `AR not supported`;
      }
    });

    if (navigator.xr === undefined) {
       // Expect: When EnterAR(true) wont working, or show this.
      message.innerHTML = `XR not supported`;
    }

score 1 · Answer 1 · answered Dec 30 '22 at 10:49

Looks like this issue. a-frame uses navigator.xr.supportsSession('immersive-ar') for support detection, but since you have the option to press the AR button, the browser is providing invalid info.

Since the detection can be faulty, You could

get the device info with a library like platform.js
run it against the the ARCore supported devices (there is a .csv available) and check if there is a match

Call XRSystem.isSessionSupported return true, but Failed to execute 'requestSession' on 'XRSystem'

1 Answers1