1、Info.plist新增描述（此项针对FaceID）
<key>NSFaceIDUsageDescription</key>
<string>需要使用您的面容识别进行安全认证</string>
<key>UIApplicationSceneManifest</key>
2、导入库
import LocalAuthentication
3、写一个函数，实现如下代码
现在应该不会还有支持8.0一下的App了吧？如果有请自行添加判断
let context = LAContext()
var error: NSError?
if (context.canEvaluatePolicy(.deviceOwnerAuthenticationWithBiometrics,
error: &error)) {
context.evaluatePolicy(.deviceOwnerAuthenticationWithBiometrics,
localizedReason: "验证") { access, resError in
if (access) {
print("验证成功了")
} else {
guard let error = resError as? LAError else { return }
print("error is", error)
}
}
}
4、iOS 11以后
可以通过LAContext().biometryType进行进一步的判断，但需要注意，需要在canEvaluatePolicy之后
@available(iOS 11.0, *)
public enum LABiometryType : Int {
/// The device does not support biometry.
@available(iOS 11.2, *)
case none = 0
/// The device does not support biometry.
@available(iOS, introduced: 11.0, deprecated: 11.2, renamed: "LABiometryType.none")
public static var LABiometryNone: LABiometryType { get }
/// The device supports Touch ID.
case touchID = 1
/// The device supports Face ID.
case faceID = 2
}
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