ios – 在authenticate方法之后没有调用finishedWithAuth

我已经设置了clientID,范围,然后在MyViewController上单击按钮,我从LoginCLass调用方法登录,但是在[signIn authenticate]之后,委托实现finishedWithAuth没有被调用.我已将.h文件设置为

- (NSError *) login
{
    NSLog(@"In login :%@ %@ %@",kClientId,scopes,actions);

    if(!kClientId|| !scopes)
    {
        NSLog(@"Either client ID Or scope is not specified!! ");
        NSError *err=[[NSError alloc]initWithDomain:@"Scope not specified" code:0 userInfo:nil];
       return err;
    }
    else
    {
        NSLog(@"Client ID and Scope are set.");
        GPPSignIn *signIn = [GPPSignIn sharedInstance];
        signIn.delegate = self;
        signIn.shouldFetchGooglePlusUser = YES;
        [signIn authenticate];
        [signIn trySilentAuthentication];
        return nil;
    }
}
- (void)finishedWithAuth:(GTMOAuth2Authentication *)auth error:(NSError *)error
{
    NSLog(@"Received error %@ and auth object %@",error, auth);
}

而且在AppDelegate中我正在添加代码

- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation {
    return [GPPURLHandler handleURL:url
                  sourceApplication:sourceApplication
                         annotation:annotation];
}

我已检查要指定的软件包ID和URL类型,它们与Google API访问中的软件包ID相同.

这些方法在LoginClass中,在MyViewController类中使用.

当我将finishedWithAuth委托设置为MyViewController时,通过将其设置为GPPSignInDelegate,代码运行正常.但是,我想在LoginClass中使用它.

任何想法,我哪里错了？

由于您的LoginClass是一个Swift类,因此修复它是使它成为NSObject的子类.

我遇到了同样的问题：当我尝试将委托设置为不是NSObject的子类的类时,分配失败并且委托仍为零.当我将NSObject作为超类添加时,赋值按预期工作.