Crash when camera permission is denied. * I am using tag '7.5.0' because of my current swift version

[mhmdrmdn94]

Crash when camera permission is denied. * I am using tag '7.5.0' because of my current swift version

[yannickl]

This is a normal behaviour, you must check before whether the permission are valid, like in the example project:

QRCodeReader.swift/Example/QRCodeReader.swift/ViewController.swift

Lines 60 to 88 in 20cb403

	private func checkScanPermissions() -> Bool {
	do {
	return try QRCodeReader.supportsMetadataObjectTypes()
	} catch let error as NSError {
	let alert: UIAlertController
	switch error.code {
	case -11852:
	alert = UIAlertController(title: "Error", message: "This app is not authorized to use Back Camera.", preferredStyle: .alert)
	alert.addAction(UIAlertAction(title: "Setting", style: .default, handler: { (_) in
	DispatchQueue.main.async {
	if let settingsURL = URL(string: UIApplication.openSettingsURLString) {
	UIApplication.shared.openURL(settingsURL)
	}
	}
	}))
	alert.addAction(UIAlertAction(title: "Cancel", style: .cancel, handler: nil))
	default:
	alert = UIAlertController(title: "Error", message: "Reader not supported by the current device", preferredStyle: .alert)
	alert.addAction(UIAlertAction(title: "OK", style: .cancel, handler: nil))
	}
	present(alert, animated: true, completion: nil)
	return false
	}
	}