Bug 210261

Summary:

[iOS] DeviceMotionEvent returning value of NULL for acceleration and rotationRate on iOS 13.4

Product:

WebKit

Reporter:

borisstodic <boris.stodic>

Component:

WebCore JavaScript

Assignee:

Nobody <webkit-unassigned>

Status:

RESOLVED DUPLICATE

Severity:

Critical

CC:

boris.stodic

Priority:

Version:

Safari Technology Preview

Hardware:

iPhone / iPad

OS:

iOS 13

Attachments:

Description	Flags
sample for devicemotionevent	none

borisstodic

Reported 2020-04-09 03:51:29 PDT

Created attachment 395934 [details] sample for devicemotionevent Hi everyone, It seems like DeviceMotionEvent does not report accelerometer and rotation rate values correctly on iOS 13.4, for both Safari and Chrome. Even if permission is granted through requestPermission() method and event does get triggered, accelerometer and rotationRate value are defaulting to NULL. The same few-liner sample code(sample will be attached with this bug report) is working on previous versions of iOS v13.3>. I believe that in iOS 13.4 implementation of DeviceMotionEvent or DeviceMotionAPI is somehow broken. Few links which might be related to this issue: https://trac.webkit.org/changeset/259601/webkit https://bugs.webkit.org/show_bug.cgi?id=209831 In order to run the attached sample, a file has to be deployed on the https server. Steps to reproduce are: 1. Serve index.html on https 2. Load page 3. hit the button "Init DeviceMotion" 4. check browser console to see results for the event, event.acceleration, event.rotationRate Thanks, Boris

Attachments
sample for devicemotionevent (668 bytes, text/html) 2020-04-09 03:51 PDT, borisstodic	no flags	Details
View All Add attachment proposed patch, testcase, etc.

Alexey Proskuryakov

Comment 1 2020-04-09 16:06:19 PDT

*** This bug has been marked as a duplicate of bug 209831 ***

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