小编Sta*_*lle的帖子

我正在深入研究Apple的Touch ID,更准确地说是Local Authenticator.截至目前的文档非常稀少.它主要是这个:

LAContext *myContext = [[LAContext alloc] init];
NSError *authError = nil;
NSString *myLocalizedReasonString = <#String explaining why app needs authentication#>;

if ([myContext canEvaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics    error:&authError]) {
[myContext evaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics
              localizedReason:myLocalizedReasonString
                        reply:^(BOOL success, NSError *error) {
        if (success) {
            // User authenticated successfully, take appropriate action
        } else {
            // User did not authenticate successfully, look at error and take appropriate action
        }
    }];
} else {
// Could not evaluate policy; look at authError and present an appropriate message to …