iOS touchID 통합

LAContext *context = [[LAContext alloc]init];
    NSError *error = nil;
    NSLog(@"%@",[context evaluatedPolicyDomainState]);
    if ([context canEvaluatePolicy:LAPolicyDeviceOwnerAuthentication error:&error]) {
      [context evaluatePolicy:LAPolicyDeviceOwnerAuthentication localizedReason:@" id" reply:^(BOOL success, NSError * _Nullable error) {
            if (success) {
                NSLog(@" ");
            } else {
                NSLog(@"%@",error.localizedDescription);
                switch (error.code) {
                    case LAErrorSystemCancel:
                    {
                        NSLog(@" ， APP ");
                        break;
                    }
                    case LAErrorUserCancel:
                    {
                        NSLog(@" Touch ID");
                        break;
                    }
                    case LAErrorAuthenticationFailed:
                    {
                        NSLog(@" ");
                        break;
                    }
                    case LAErrorPasscodeNotSet:
                    {
                        NSLog(@" ");
                        break;
                    }
                    case LAErrorTouchIDNotAvailable:
                    {
                        NSLog(@" Touch ID ， ");
                        break;
                    }
                    case LAErrorTouchIDNotEnrolled:
                    {
                        NSLog(@" Touch ID ， ");
                        break;
                    }
                    case LAErrorUserFallback:
                    {
                        [[NSOperationQueue mainQueue] addOperationWithBlock:^{
                            NSLog(@" ， ");
                        }];
                        break;
                    }
                    default:
                    {
                        [[NSOperationQueue mainQueue] addOperationWithBlock:^{
                            NSLog(@" ， ");
                        }];
                        break;
                    }
                }
            }
        }];  } else { 
        NSLog(@" ");
        switch (error.code) {
            case LAErrorTouchIDNotEnrolled:
            {
                NSLog(@"TouchID is not enrolled");
                break;
            }
            case LAErrorPasscodeNotSet:
            {
                NSLog(@"A passcode has not been set");
                break;
            }
            default:
            {
                NSLog(@"TouchID not available");
                break;
            }
        }
        NSLog(@"%@",error.localizedDescription);  }