Question

我正在尝试在我的应用中实施TouchID验证。我找到了许多解释如何做的例子（我做了）但事情是我不知道如果他/她想要给用户输入他/她的密码的可能性。而且我想了解关闭我的应用程序的最佳方法，例如用户决定按下TouchID警报视图中的“取消”按钮。谢谢！

这是我的代码：

    func validaIdentidad(){
    var touchIDContext = LAContext()
    var msgError : NSError?
    var alerta = UIAlertController(title:"", message:"", preferredStyle: UIAlertControllerStyle.Alert)
    alerta.addAction(UIAlertAction(title: "Understand", style: UIAlertActionStyle.Cancel, handler: {alertAction in
        alerta.dismissViewControllerAnimated(true, completion: nil)}))

    if touchIDContext.canEvaluatePolicy(LAPolicy.DeviceOwnerAuthenticationWithBiometrics, error: &msgError) {
        touchIDContext.evaluatePolicy(LAPolicy.DeviceOwnerAuthenticationWithBiometrics,
            localizedReason: "Please authenticate using your fingerprint",
            reply: {(success: Bool, error: NSError!) -> Void in
                if success {
                    //si valida, dejo abrir la app
                    self.transicion()
                } else {
                    alerta.title = "Error"
                    switch error!.code {
                    case LAError.UserCancel.toRaw():
                        alerta.message = "Accion cancelada"
                        self.presentViewController(alerta, animated:true, completion:nil)
                        exit(0)
                    case LAError.AuthenticationFailed.toRaw():
                        alerta.message = "Error verificando tu identidad"
                    case LAError.UserFallback.toRaw():
                        alerta.message = "Usuario quiero ingresar passcode"
                    default:
                        alerta.message = "Error genérico"
                    }
                    //exit(0)
                    //self.presentViewController(alerta, animated:true, completion:nil)
                }
        })
    }
    else {
        alerta.title = "Nope!"
        switch msgError!.code {
        case LAError.TouchIDNotAvailable.toRaw():
            alerta.message = "Este dispositivo no tiene Touch ID"
        case LAError.TouchIDNotEnrolled.toRaw():
            alerta.message = "No se ha configurado el Touch ID"
        case LAError.PasscodeNotSet.toRaw():
            alerta.message = "No se ha configurado un PassCode"
        default:
            alerta.message = "Error Genérico"
        }
        self.presentViewController(alerta, animated:true, completion:nil)
    }//cierre else
}//cierre func ValidaIdentidad

在LAContext Swift中询问密码

0 个答案: