如何清除AFNetworking中的图像缓存或任何缓存？ [英] How To Clear Image cache or any cache in AFNetworking?

问题描述

大家好，有谁能帮我解决如何清除AFNetworking中的缓存。

我曾经使用过旧版本的AFNetworking，并且看到它已经更新了，有谁能帮我解决如何清理AFnetworking的缓存。

以前是这样的

  SDImageCache * imageCache = [SDImageCache sharedImageCache]; 
 [imageCache clearMemory]; 
 [imageCache clearDisk]; 
 [imageCache cleanDisk]; 
  

解决方案

如果您使用的是AFNetworking，我最近实现了

在文件 UIImageView + AFNetworking.h中查找

在 @interface UIImageView（AFNetworking）下，添加以下内容：

-（void ）clearImageCacheForURL：（NSURL *）url;

并且在 @protocol AFImageCache 下，添加：

-（void）clearCachedRequest：（NSURLRequest *）request;

下一步，打开 UIImageView + AFNetworking.m

在 @implementation UIImageView（AFNetworking）下，添加以下内容：

 -（void）clearImageCacheForURL：（NSURL *）url {
 NSMutableURLRequest * request = [NSMutableURLRequest requestWithURL：url]; 
 [为HTTPHeaderField：@ Accept请求addValue：@ image / *]； 
 
 UIImage * cachedImage = [[[[self class] sharedImageCache] cachedImageForRequest：request]; 
 if（cachedImage）{
 [[[[self class] sharedImageCache] clearCachedRequest：request]; 
} 
} 
  

几乎完成了！现在，只需在下面的 @implementation AFImageCache 中添加以下内容：

 -（void ）clearCachedRequest：（NSURLRequest *）request {
 if（request）{
 [self removeObjectForKey：AFImageCacheKeyFromURLRequest（request）]; 
} 
} 
  

您很高兴！现在，当您需要从缓存中清除特定的图像URL时，只需调用 [imageView clearImageCacheForURL：imgURL];

Hi All can any one help me out how to clear the cache in AFNetworking.

I used to have old version of AFNetworking and i see that it has been updated, Can any body help me out how to clean the cache for AFnetworking.

Previously it was something like this

SDImageCache *imageCache = [SDImageCache sharedImageCache];
[imageCache clearMemory];
[imageCache clearDisk];
[imageCache cleanDisk];

解决方案

If you're using AFNetworking, I recently implemented a little workaround to remove the image from the cache.

Look in the file "UIImageView+AFNetworking.h"

Under @interface UIImageView (AFNetworking), add the following:

- (void)clearImageCacheForURL:(NSURL *)url;

And Under @protocol AFImageCache, add:

- (void)clearCachedRequest:(NSURLRequest *)request;

Next, open "UIImageView+AFNetworking.m"

Under @implementation UIImageView (AFNetworking), add the following:

- (void)clearImageCacheForURL:(NSURL *)url {
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
    [request addValue:@"image/*" forHTTPHeaderField:@"Accept"];

    UIImage *cachedImage = [[[self class] sharedImageCache] cachedImageForRequest:request];
    if (cachedImage) {
        [[[self class] sharedImageCache] clearCachedRequest:request];
    }
}

Almost done! Now just add the following below @implementation AFImageCache:

- (void)clearCachedRequest:(NSURLRequest *)request {
    if (request) {
        [self removeObjectForKey:AFImageCacheKeyFromURLRequest(request)];
    }
}

And you're good to go! Now when you need to clear a particular image url from the cache, just call [imageView clearImageCacheForURL:imgURL];

这篇关于如何清除AFNetworking中的图像缓存或任何缓存？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！