[camera] Calling setFocusMode() on iOS front-facing camera crashes app: [AVCaptureDevice setFocusMode:] Unsupported focusMode - use -isFocusModeSupported: to discover valid focus modes #76498
Description
Steps to Reproduce
- Run the example camera app on any iOS device
- Switch to the front facing selfie camera
- Tap the focus mode button and change it to "Locked"
- App will crash.
Expected results:
If a focus mode is not supported, it should handle the exception and not crash the app.
Actual results:
App immediately crashes (exits) with the following native exception:
*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[AVCaptureDevice setFocusMode:] Unsupported focusMode - use -isFocusModeSupported: to discover valid focus modes'
*** First throw call stack:
(0x18c12186c 0x1a113cc50 0x1a648d3c0 0x1056459fc 0x1056456a8 0x10564a718 0x105648714 0x18bd1424c 0x18bd15db0 0x18bd1d10c 0x18bd1dc5c 0x18bd27d78 0x1d7bd1814 0x1d7bd876c)
libc++abi.dylib: terminating with uncaught exception of type NSException
* thread #42, queue = 'io.flutter.camera.dispatchqueue', stop reason = signal SIGABRT
frame #0: 0x00000001ba076414 libsystem_kernel.dylib`__pthread_kill + 8
libsystem_kernel.dylib`__pthread_kill:
-> 0x1ba076414 <+8>: b.lo 0x1ba076434 ; <+40>
0x1ba076418 <+12>: pacibsp
0x1ba07641c <+16>: stp x29, x30, [sp, #-0x10]!
0x1ba076420 <+20>: mov x29, sp
Target 0: (Runner) stopped.
Lost connection to device.
Exited (sigterm)
Logs
[✓] Flutter (Channel dev, 1.27.0-4.0.pre, on macOS 11.1 20C69 darwin-arm, locale en-US)
• Flutter version 1.27.0-4.0.pre at /Users/andrewcoutts/Projects/flutter
• Framework revision f8cd24de95 (5 days ago), 2021-02-16 11:24:17 -0800
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• Platform android-30, build-tools 30.0.3
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• Xcode 12.4, Build version 12D4e
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[✓] Connected device (3 available)
• Pixel 4 (mobile) • 9A311FFAZ00C03 • android-arm64 • Android 11 (API 30)
• xff0c-12p (mobile) • 00008101-00196C340C29003A • ios • iOS 14.4
• Chrome (web) • chrome • web-javascript • Google Chrome 88.0.4324.182
• No issues found!