ios - AFNetworking 2.0 setImageWithURLRequest

Question

我在当前的一个项目中下载图像时使用了这段代码，但它不适用于 AFNetworking 2.0。我尝试通过 AFImageResponseSerializer，但找不到要使用的正确代码。

[cell.posterImage setImageWithURLRequest:urlRequest placeholderImage:[UIImage imageNamed:@"placeholder.png"] success:^(NSURLRequest *request, NSHTTPURLResponse *response, UIImage *image) {
            cell.posterImage.image = image;
        } failure:^(NSURLRequest *request, NSHTTPURLResponse *response, NSError *error) {
            NSLog(@"Request failed with error: %@", error);
        }];

对 AFNetworking 2.0 中使用的新代码有什么建议吗？谢谢!

Answer 1

我使用这段代码让它工作:

AFHTTPRequestOperation *posterOperation = [[AFHTTPRequestOperation alloc] initWithRequest:urlRequest];
posterOperation.responseSerializer = [AFImageResponseSerializer serializer];
[posterOperation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
    NSLog(@"Response: %@", responseObject);
    _posterImageView.image = responseObject;

} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    NSLog(@"Image request failed with error: %@", error);
}];
[[NSOperationQueue mainQueue] addOperation:posterOperation];
[posterOperation start];

但是我遇到了另一个使用它的占位符图像的问题。有什么想法吗？