I want to use AVCaptureDevice flashMode. But what I have tried all failed.
Reading the net makes it look that should be simple, nevertheless for some reason it crashes.
Here is the code I am using:
if captureDevice.hasFlash && captureDevice.isFlashModeSupported(.On) {
do {try captureDevice.lockForConfiguration()
} catch let error as NSError {
print("captureDevice.lockForConfiguration FAILED")
print(error.code)
}
captureDevice.flashMode = .On
captureDevice.unlockForConfiguration()
captureSession.commitConfiguration()
}
Without this code the app runs fine (with no flash).
With this code:
It compiles OK but when I try to take a photo, the app crashes with the following error:
Error Domain=AVFoundationErrorDomain Code=-11800 "The operation couldn’t be completed." UserInfo={NSUnderlyingError=0x14e176f40 {Error Domain=NSOSStatusErrorDomain Code=-16800 "(null)"}, NSLocalizedFailureReason=Undefined error（-16800）, NSLocalizedDescription=The operation couldn’t be completed.}
Since I have never used the flash in an app before, I may well be making an error;
an error in the code above or putting this code in the wrong place.
But I haven’t, at this point, been able to figure out what was the problem.