我想在我的iOS应用程序中实现本地身份验证安全性,但我是
得到一个错误,不能弄清楚为什么我得到这个.
得到一个错误,不能弄清楚为什么我得到这个.
我正在使用iPhone 5s.这很重要吗
码：
import UIKit
import LocalAuthentication
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view,typically from a nib.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
@IBAction func action(_ sender: Any) {
authenticateUser()
}
func authenticateUser() {
let authContext : LAContext = LAContext()
var error: NSError?
if authContext.canEvaluatePolicy(LAPolicy.deviceOwnerAuthenticationWithBiometrics,error: &error){
authContext.evaluatePolicy(LAPolicy.deviceOwnerAuthenticationWithBiometrics,localizedReason: "Biometric Check for application",reply: {(successful: Bool,error: NSError?) -> Void in
if successful{
print("TouchID Yes")
}
else{
print("TouchID No")
}
} as! (Bool,Error?) -> Void)
}
else{
authContext.evaluatePolicy(LAPolicy.deviceOwnerAuthentication,localizedReason: "Enter your Passcode",reply: {
(successful: Bool,error: NSError?) in
if successful{
print("PassCode Yes")
}
else{
print("PassCode No")
}
} as! (Bool,Error?) -> Void)
}
}
}
错误：
提前致谢.
解决方法
没有类型转换的代码应该可以工作
func authenticateUser() {
let authContext : LAContext = LAContext()
var error: NSError?
if authContext.canEvaluatePolicy(LAPolicy.deviceOwnerAuthenticationWithBiometrics,error: &error){
authContext.evaluatePolicy(LAPolicy.deviceOwnerAuthenticationWithBiometrics,reply: {successful,error -> Void in
if successful{
print("TouchID Yes")
}
else{
print("TouchID No")
}
}
)
}
else{
authContext.evaluatePolicy(LAPolicy.deviceOwnerAuthentication,reply: {
successful,error in
if successful{
print("PassCode Yes")
}
else{
print("PassCode No")
}
}
)
}
}
