Question

我无法同时获取Facebook名称和图片。我每个请求只能接受其中一个。

-(void)fbDidLogin{
    // Save the access token key info.
    [self saveAccessTokenKeyInfo];

    // Get the user's info.
    [facebook requestWithGraphPath:@"me/?fields=first_name,picture" andDelegate:self];

}

-(void)request:(FBRequest *)request didLoad:(id)result{

    if ([result isKindOfClass:[NSArray class]]) {

        result = [result objectAtIndex:0];

        if ([result objectForKey:@"first_name"]) {
            [lblUser setText:[NSString stringWithFormat:@"Welcome %@!", [result objectForKey:@"first_name"]]];
            // Show the publish button.
            [btnPublish setHidden:NO];
        }
    }
    else {
       imageView.image = [UIImage imageWithData:result];
    }      
}

我得到的错误

__NSCFDictionary length]: unrecognized selector sent to instance
*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFDictionary length]: unrecognized selector sent to instance

如果我接近两个请求

-(void)fbDidLogin{
    // Save the access token key info.
    [self saveAccessTokenKeyInfo];

    // Get the user's info.
    [facebook requestWithGraphPath:@"me/picture" andDelegate:self];
    [facebook requestWithGraphPath:@"me" andDelegate:self];
}

并使用相同的 - （void）请求：（FBRequest *）请求didLoad：（id）结果我得到的错误是

[__NSCFDictionary length]: unrecognized selector sent to instance

那么如何才能请求获取Facebook名称和图片以及如何处理传入数据？

Answer 1

我修复了它，以下代码正常工作以获取Facebook名称和个人资料图片

-(void)request:(FBRequest *)request didLoad:(id)result{
    // With this method we’ll get any Facebook response in the form of an array.
    // In this example the method will be used twice. Once to get the user’s name to
    // when showing the welcome message and next to get the ID of the published post.
    // Inside the result array there the data is stored as a NSDictionary.    


    if ([result isKindOfClass:[NSData class]])
    {
        NSLog(@"Profile Picture");
        imageView.image = [UIImage imageWithData:result];
        //[profilePicture release];
        //profilePicture = [[UIImage alloc] initWithData: result];
    }


  if ([result isKindOfClass:[NSArray class]]) {
        // The first object in the result is the data dictionary.

        result = [result objectAtIndex:0];


    }

    if ([result isKindOfClass:[NSDictionary class]]) {
        // If the current result contains the "first_name" key then it's the user's data that have been returned.
        // Change the lblUser label's text.
        [lblUser setText:[NSString stringWithFormat:@"Welcome %@!", [result objectForKey:@"first_name"]]];
        // Show the publish button.
        [btnPublish setHidden:NO];
    }

}

Answer 2

Facebook服务器为您提供的响应是一个字典，而不是数组。删除有关NSArray的两行，只需使用：

if ([result objectForKey:@"first_name"]) {
        [lblUser setText:[NSString stringWithFormat:@"Welcome %@!", [result objectForKey:@"first_name"]]];
        NSLog(@"%@", lblUser);
        // Show the publish button.
        [btnPublish setHidden:NO];
}

获取Facebook个人资料名称和图片IOS 5.1

2 个答案: