我运行了最新的
Xcode 9 GM(2017年9月13日)并设置了硬件>面部ID>注册了模拟器以及部署目标11.0.但是我收到错误代码-6 LAErrorTouchIDNotAvailable.
有什么设置我不见了？
let myContext = LAContext()
let myLocalizedReasonString = "You are pretty"
var authError: NSError?
if #available(iOS 8.0,macOS 10.12.1,*) {
if myContext.canEvaluatePolicy(.deviceOwnerAuthenticationWithBiometrics,error: &authError) {
myContext.evaluatePolicy(.deviceOwnerAuthenticationWithBiometrics,localizedReason: myLocalizedReasonString) { success,evaluateError in
if success {
print("// User authenticated successfully,take appropriate action")
} else {
print(" // User did not authenticate successfully,look at error and take appropriate action")
}
}
} else {
print(" // Could not evaluate policy; look at authError and present an appropriate message to user")
}
} else {
print(" // Fallback on earlier versions")
}
解决方法
由于框架错误,Face ID在Xcode 9 GM中不起作用. Xcode 9.1修复了这个问题.
您可以在iPhone 8模拟器中测试您的应用程序,并确保它与Touch ID一起正常运行或运行Xcode 9.1 beta并在那里测试Face ID支持.