Contents 非表示
実装
Info.plistへの追記事項
これを追加する (Value
は日本語でもOK)
Privacy - Face ID Usage Description: We need to unlock your data
コーディング
import SwiftUI
import LocalAuthentication
struct HomeView: View {
@State private var isUnlocked = false
var body: some View {
VStack(spacing: 40) {
if isUnlocked {
Text("App Unlocked")
.font(.largeTitle)
Image(systemName: "lock.open")
.resizable()
.frame(width: 100, height: 140)
} else {
Text("App Locked")
.font(.largeTitle)
Image(systemName: "lock.fill")
.resizable()
.frame(width: 100, height: 140)
}
}
.onAppear(perform: authenticate)
}
private func authenticate() {
let context = LAContext()
var error: NSError?
if context.canEvaluatePolicy(.deviceOwnerAuthenticationWithBiometrics, error: &error) {
let reason = "We need to unlock your data."
context.evaluatePolicy(.deviceOwnerAuthenticationWithBiometrics, localizedReason: reason) { success, authenticationError in
if success {
isUnlocked = true
} else {
print("DEBUG_PRINT: Authentication Failed!")
}
}
} else {
print("DEBUG_PRINT: No Biometrics!")
}
}
}
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