SDWebImage清除缓存 [英] SDWebImage clearing cache

问题描述

我正在显示从网络下载的图标列表，其中包含表格视图中的文本。可以在服务器端更改图标，我需要在新图标可用时立即更换它们。我尝试使用以下代码：

I'm displaying a list of icons downloaded from the web with text in a table view. The icons can be changed on server side and I need to replace them as soon as new icons are getting available. I try using the following code:

[imgView setImageWithURL:url placeholderImage:[UIImage imageNamed:@"table_avatar_icon"] options:SDWebImageCacheMemoryOnly];

并调用 [[SDImageCache sharedImageCache] clearMemory]; 在我的刷新回调中，但它不会清除缓存的内容。更重要的是，即使我关闭应用程序并再次打开它，图像仍然存在。

And call [[SDImageCache sharedImageCache] clearMemory]; In my refresh callback, but it does not purge the contents of the cache. More to it, even if I close the application and open it again the image is still there.

我发现只有一种方法可以清除缓存，而是通过调用 [[SDImageCache sharedImageCache] clearDisk]; 。这只有在我关闭并重新打开应用程序后才有效。

I found only one way to clear the cache and it is by calling [[SDImageCache sharedImageCache] clearDisk];. Which only works after I close and reopen the app.

如何强制SDWebImage不使用磁盘缓存？

How can I force SDWebImage to not to use disk caching?

推荐答案

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

不要忘记将这些代码行放在 didReceiveMemoryWarning中，也是。

Don't forget to put these lines of code in your didReceiveMemoryWarning, too.

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