iOS FBSDKProfilePictureView 返回空白图片

所以我试图创建一个用户喜欢的页面的简单滚动条，并显示图像和名称。但是，配置文件 View 显示的是空白图像，而不是占位符图片，这意味着它正在接收要显示的图像。在实际的 FBSDKProfilePictureView 代码中放置一些断点后，特别是在 _updateImageWithData:state: 处，它显示每个图像的数据对象只有 97 个字节。有趣的是，当我创建一个独立的个人资料图片 View 时，比如

    FBSDKProfilePictureView *profilePictureView = [[FBSDKProfilePictureView alloc] initWithFrame:CGRectMake(inset, inset, profileSize, profileSize)];
    profilePictureView.profileID = @"4"; //Mark Zuckerberg's id

它可以正确显示图像。

所以起初我认为这可能与设置太多配置文件 ID 相关，从而创建了太多 url 请求，但如果我只运行下面的代码一次(即没有循环)它仍然返回相同的 97 个字节.

下面是我用来生成 ScrollView 的代码。

    for (int i = 0; i < numToIterate; i++) {
        NSDictionary *curr = [sharedInterests objectAtIndex:i];
        NSString *idNumber = [curr objectForKey"id"];
        NSString *name = [curr objectForKey"name"];
        NSLog(@"getting %@, %@.", name, idNumber);
        // get logo
        FBSDKProfilePictureView *itemView = [[FBSDKProfilePictureView alloc] initWithFrame:CGRectMake(i * (smallFrameWidth + horizontalBufferBetweenPics) + horizontalBufferBetweenPics, 0, smallFrameWidth,smallFrameHeight)];
        [self.scrollView addSubview:itemView];
        [itemView setProfileID:idNumber];
        // create description
        UILabel *currDescriptionLabel = [[UILabel alloc] initWithFrame:CGRectMake(i * (smallFrameWidth + horizontalBufferBetweenPics) + horizontalBufferBetweenPics, smallFrameHeight, categoryLabelWidth, categoryLabelHeight)];
        currDescriptionLabel.text = name;
        currDescriptionLabel.backgroundColor = [[UIColor blueColor] colorWithAlphaComponent:0.5];
        currDescriptionLabel.font = [UIFont fontWithName"HelveticaNeue-Light" size:12];
        currDescriptionLabel.textAlignment = NSTextAlignmentCenter;
        currDescriptionLabel.numberOfLines = 2;
        [scrollView addSubview:currDescriptionLabel];
    }

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Best Answer-推荐答案

我创建了一个 modified version提供错误报告的 FBProfilePictureView。它允许您设置报告错误的完成处理程序:

self.facebookPictureView.completionHandler = ^(DBFBProfilePictureView* view, NSError* error){
    if(error) {
        view.showEmptyImage = YES;
        view.profileID = nil;
        NSLog(@"Loading profile picture failed with error: %@", error);
    } 
}

关于iOS FBSDKProfilePictureView 返回空白图片，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/32448278/