如何查看 URL 图片设置的内容？

Question

我使用 url 设置 image，如下所示：

[self.imageView setMyImageWithURL:[NSURL URLWithString:[trip.destination getHeaderImageUrl] ]];

- (void)setMYImageWithURL:(NSURL *)url {
    [self setBackground];

    if(url.absoluteString.length >0){
        __block UIImageView *safeSelf = self;
        UIImage *placeholderImage = [UIImage imageNamed:[NSString stringWithFormat:@"placeholderpic_%@.png", NSLocalizedString(@"LanguageCode" , @"")]];
        [self setImageWithURLRequest:[NSURLRequest requestWithURL:url]
                    placeholderImage:placeholderImage
                             success:nil
                             failure:^(NSURLRequest *request, NSHTTPURLResponse *response, NSError *error){
                                 safeSelf.image = [UIImage imageNamed:[NSString stringWithFormat:@"placeholderpic_%@_missing.png", NSLocalizedString(@"LanguageCode" , @"")]];
                             }
         ];
    }else{
        self.image = [self missingImage];
    }
}

现在，有没有办法在 imageView url 设置后检查它。比如，NSLog(@"%@", self.imageView.usingURL)。我想使用条件检查它是否与另一个 url 相同。像这样：

if(self.imageView.usingURL == [NSURL URLWithString:[trip.destination getHeaderImageUrl]])

Answer 1

使用该分类在UIImageView属性中添加

@interface UIImageView (URLImageView)
    @property NSURL* usingURL;
@end

@implementation UIImageView (URLImageView)]
@end

现在，当下载图像并设置为图像视图时，将 url 分配给图像视图，如

self.imageView.usingURL = yourURL

现在您可以访问此 url 进行比较。

如何查看 URL 图片设置的内容？

How do I check what URL an image has been set with?

url

objective-c

uiimage

ios