iOS crashes when turning on Bluetooth switch at app settings(in system Settings)

[ghost]

Describe the bug
When user leave app to Settings for granting Bluetooth permission to app, app crashes after turning on Bluetooth switch.

To Reproduce
Steps to reproduce the behavior:

1. turn off Bluetooth switch in app settings.
2. Run app.
3. Listen ble statusStream.
4. Go to app settings at system Settings, turn on Bluetooth switch.
5. App crashes

Error:

• thread Update dependencies #1, queue = 'com.apple.main-thread', stop reason = signal SIGKILL
  frame #0: 0x00000001bcb6d908 libsystem_kernel.dylibmach_msg_trap + 8 libsystem_kernel.dylibmach_msg_trap:
  -> 0x1bcb6d908 <+8>: ret
  libsystem_kernel.dylib`mach_msg_overwrite_trap:
  0x1bcb6d90c <+0>: mov x16, #-0x20
  0x1bcb6d910 <+4>: svc #0x80
  0x1bcb6d914 <+8>: ret
  Target 0: (Runner) stopped.
  Lost connection to device.

[werediver]

Quick googling points to a similar report: Baseflow/flutter-permission-handler#293

Which mentions this: Baseflow/flutter-permission-handler#368 (comment)

Any chance this is your problem? (check the last link)

[ghost]

Not open app settings programmatically, I press home button and then click system settings icon, find app settings in list, finally turn on/off Bluetooth switch in app settings.
App crashes in my iphone se 2 / iphone 6s plus. If app had bluetooth permission already, turn off Bluetooth switch in app settings still make app crash.

[AxelBlaz3]

Not open app settings programmatically, I press home button and then click system settings icon, find app settings in list, finally turn on/off Bluetooth switch in app settings. App crashes in my iphone se 2 / iphone 6s plus. If app had bluetooth permission already, turn off Bluetooth switch in app settings still make app crash.

Same issue on my end. Have you found any workaround for this?

[ky1vstar]

It's absolutely normal behaviour for iOS to kill application when you change its permissions in Settings app. This is the same for native apps.

[Taym95]

Please check this response Your app is not crashing...

I will close this issue for now because it seems like normal IOS behavior.

[ex-tag]

This feels like a bug, or an oversight on Apple's side. If it's by design, then it goes against Apple's own advice.
https://developer.apple.com/library/archive/qa/qa1561/_index.html

If setting changes cause an app to close, there should be an alert that communicates that to the user in advance.

[remonh87]

@octocat-1 I agree it is bad user experience but I think there is little we can do about it. The stack trace is not thrown by our lib but by the OS

[GordonHuangYong]

It's absolutely normal behaviour for iOS to kill application when you change its permissions in Settings app. This is the same for native apps.

not really

[tabekg]

any solutions?