AFNetworking setImageWithURLRequest在图像下载期间显示进度条？

Question

如何在图像下载过程中显示进度条？

我的代码在这里:

 [picView setImageWithURLRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:picURL]] placeholderImage:[UIImage imageNamed:@"placeholder.png"] success:^(NSURLRequest *request, NSHTTPURLResponse *response, UIImage *image) {
    NSLog(@"success");


} failure:^(NSURLRequest *request, NSHTTPURLResponse *response, NSError *error) {
    NSLog(@"fail");
}    
 ];

先感谢您.

Answer 1

进度条可能不是正确的UI.相反,您应该使用不确定的进度指示器(旋转条).要在AFNetworking中执行此操作,请使用setImageWithURLRequest:placeholderImage:success:failure:隐藏进度指示器的成功和失败.

如果您确实想要跟踪请求的进度,则必须使用AFImageRequestOperation,然后执行setDownloadProgressBlock:.