iOS 13 - WkWebView BUG: audio stops when in background

UI Frameworks UIKit
marcomartignone OP
Created Aug ’19
Replies 37
Boosts 0
Views 31k
Participants 33

I've an app that uses WkWebView to play audio from Soundcloud and Mixcloud by using their javascript widget, on iOS 13 Beta 6 the audio stops when the app is not in foreground, even when Audio is on in Background Modes.


When starting the playback this assertions is thrown:


Error acquiring assertion: <NSError: 0x282cf67c0; domain: RBSAssertionErrorDomain; code: 2; reason: "Required client entitlement is missing"> {
userInfo = {
  RBSAssertionAttribute = <RBSLegacyAttribute: 0x1592432e0; requestedReason: MediaPlayback; reason: MediaPlayback; flags: PreventTaskSuspend | PreventTaskThrottleDown | WantsForegroundResourcePriority>;
}


And after entering background state the following assertion is thrown and audio suspended:


Can't end BackgroundTask: no background task exists with identifier 13 (0xd), or it may have already been ended. Break in UIApplicationEndBackgroundTaskError() to debug. 
[ProcessSuspension] Background task expired while holding WebKit ProcessAssertion (isMainThread? 1).


This is not happening in iOS 12, where the audio plays normally when in background.

Replies  37
Boosts  0
Views  31k
Participants  33
Sayed Ali OP
Sep ’19

I have the same problem and after a week searching couldn't find any solution for it.

0
nick364 OP
Sep ’19

I have the same problem.

0
asikerin OP
Sep ’19

I have the same problem.


But Safari does not have this problem. Can somebody from Apple enginiers to help us?


Also, there is the similar question on SO -

https://stackoverflow.com/questions/57526699/ios-13-wkwebview-audio-stops-when-in-background


https://openradar.appspot.com/radar?id=5022510114406400

0
siddugh OP
Oct ’19

I too facing the same problem

wkwebview, audio stops when in background, but working in simulator

0
biesbjerg OP
Oct ’19

Reports are starting to roll in, from users of our app who upgraded to iOS 13, as well.

0
nmanzini_iomedia OP
Oct ’19

I am facing the same issue. Is this done on purpose to block webapp from running background audio?

0
st1s OP
Oct ’19

same problem

0
RobertAngel OP
Oct ’19

I have the same problem.

0
CristianRM OP
Oct ’19

I'm facing with the same issue, on iOs 13.1.2.

0
Julibarm OP
Oct ’19

Same problem here, webapp audio is broken on iOS 13.

Still searching for a workaround...

0
first version OP
Oct ’19

Same issue, when I was using version 12+ was working perfect, as soon as the version 13.1.2 was release this issue started happening, the only work around I have found so far is keeping the screen on all the time.

0
griv OP
Oct ’19

Same error here trying to play local html audio in a cordova app. Plays in Simulator not on device. Even in foreground.

0
Julibarm OP
Oct ’19

Upping the topic.


There is still an issue in iOS 13, the sound get paused automatically after few moment..., did anyone find a workaround?

0
QF5690 OP
Oct ’19

Unfortunately, from iOS 13 this ability is under sytem entitlements, com.apple.multitasking.systemappassertions and com.apple.multitasking.unlimitedassertions, you can try it in simulator, no error in log. There is no way to launch it on device thought, as you need an Apple issued provision profile. So, all we can do is to hope that some future release will fix this.

0
digitalNinja OP
Nov ’19

I have the same issue

0
iOS 13 - WkWebView BUG: audio stops when in background
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