Question

我正在使用AfNetworking版本〜＆gt; 1.3.4，由cocoaPods添加。我无法升级到2.0，因为我的应用程序中使用了大多数方法。

使用具有相同网址的新图片时，无法清除AFImageCache（在UIImageView + AFNetworking中）

我应该在“UIImageView + AFNetworking”类中添加以下方法。

+ (void)clearCachedImages {
     [[[self class] af_sharedImageCache] removeAllObjects];
}

因为AFNetworking在我的cocoaPods中。我无法添加。请帮我如何按类别/子类添加此方法？

修改

我试过以下

@class AFImageCache;

@interface SPUtility : NSObject
{

}
@end

@implementation SPUtility

+ (void)clearCachedImages {
    [[AFImageCache af_sharedImageCache] removeAllObjects]; //shows following error
}
@end

错误：选择器'af_sharedImageCache'没有已知的类方法 2.接收者'AFImageCache'用于类消息是一个前向声明

Answer 1

为UIImageView af_sharedImageCache中的UIImageView (AFNetworking)制作@interface UIImageView (MyMethods) + (NSCache *)af_sharedImageCache; @end //you don't have to implement method since it's already defined in UIImageView (AFNetworking) //It's just for the happiness of the compiler @implementation SPUtility + (void)clearCachedImages { [[UIImageView af_sharedImageCache] removeAllObjects]; } @end类别

<强> SPUtility.m

{{1}}

删除图像缓存

1 个答案: