TouchID＆＃34; On＆＃34; vs＆＃34; On但暂停＆＃34;

Question

是否有办法确定是否已注册指纹，但Touch ID目前处于＆＃34;暂停＆＃34;状态是因为指纹认证失败太多了？

Answer 1

可以将错误代码与LAError类进行比较。

func errorMessageForLAErrorCode( errorCode:Int ) -> String{

        var message = ""

        switch errorCode {

        case LAError.AppCancel.rawValue:
            message = "Authentication was cancelled by application"

        case LAError.AuthenticationFailed.rawValue:
            message = "The user failed to provide valid credentials"

        case LAError.InvalidContext.rawValue:
            message = "The context is invalid"

        case LAError.PasscodeNotSet.rawValue:
            message = "Passcode is not set on the device"

        case LAError.SystemCancel.rawValue:
            message = "Authentication was cancelled by the system"

        case LAError.TouchIDLockout.rawValue:
            message = "Too many failed attempts."

        case LAError.TouchIDNotAvailable.rawValue:
            message = "TouchID is not available on the device"

        case LAError.UserCancel.rawValue:
            message = "The user did cancel"

        case LAError.UserFallback.rawValue:
            message = "The user chose to use the fallback"

        default:
            message = "Did not find error code on LAError object"

        }

        return message

    }