1. 需要通过指纹，面容认证后才能打开 App

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2. 添加配置

需要向 Info.plist 文件中添加一个配置，向用户说明为什么要访问
添加 Privacy - Face ID Usage Description
并为其赋予值 $(PRODUCT_NAME) need Touch Id or Face ID permission for app lock

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3. Show me the code

//
//  SwiftUIView84.swift
//  bill2
//
//  Created by 朱洪苇 on 2023/7/22.
//import SwiftUI
import LocalAuthenticationstruct SwiftUIView84: View {@State private var isUnlocked = falsefunc authenticate() {let context = LAContext()var error: NSError?// 检查是否可以进行生物特征认证if context.canEvaluatePolicy(.deviceOwnerAuthenticationWithBiometrics, error: &error) {// 有可能，所以继续使用它let reason = "We need to unlock your data."context.evaluatePolicy(.deviceOwnerAuthenticationWithBiometrics, localizedReason: reason) { success, authenticationError in// 身份验证现已完成DispatchQueue.main.async {if success {// authenticated successfullyself.isUnlocked = trueprint("成功认证")} else {// there was a problemself.isUnlocked = falseprint("有个问题")}}}} else {print("没有生物识别")// 没有生物识别}}var body: some View {VStack {if self.isUnlocked {Text("Unlocked").foregroundColor(.green)} else {Text("Locked").foregroundColor(.red)}}.font(.largeTitle).onAppear(perform: authenticate)}
}struct SwiftUIView84_Previews: PreviewProvider {static var previews: some View {SwiftUIView84()}
}

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4. 真机运行

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