How to clear all cached images loaded from SDWebImage?

Question

I have all images loaded on my app via SDWebImage. The downloading and caching works great, but I wanted to make a button that can clear all cached images in the entire app.

I have a "Clear Cache" button as a UIButton on one of my tab bar views. How can I make it so when this button is tapped, all the cached images are removed and need to be re-downloaded?

Using Swift.

Thank you!

score 68 · Accepted Answer · edited Aug 27 '20 at 00:42

68

If you want to completely clear the cache do the following:

Obj-c:

- (IBAction)clearCache:(id)sender {
    [[SDImageCache sharedImageCache]clearMemory];
    [[SDImageCache sharedImageCache]clearDisk];
}

Swift 5

SDImageCache.shared.clearMemory()
SDImageCache.shared.clearDisk()

Swift 3.0

@IBAction func clearCache(sender: UIButton) {
    SDImageCache.shared().clearMemory()
    SDImageCache.shared().clearDisk()
}

edited Aug 27 '20 at 00:42

Zorayr

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answered Oct 05 '16 at 18:57

guidev

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Thanks for the response. How would I link this up to a UIButton? Would it be through an outlet? – Miles Oct 05 '16 at 18:58
Will try this. Thank you! – Miles Oct 05 '16 at 19:33
Is SDWebimage library manage automatic remove images from the cached? If we are not using any more since 2 to 3 days and more. – Gautam Sareriya Oct 24 '18 at 06:22
1

FYI, clearDisk has been changed to clearDiskOnCompletion:. – tounaobun Mar 15 '19 at 03:17
@tounaobun the declaration is `func clearDisk(onCompletion completion: SDWebImageNoParamsBlock? = nil)`, so the `onCompletion` parameter can be omitted. – alobaili Dec 15 '21 at 10:58

Bista · Answer 2 · 2016-10-05T19:00:03.930

2

Try this:

@IBAction func actClearCache(sender:AnyObject) {

   let objCache = SDImageCache.sharedImageCache()
   objCache.clearMemory()
   objCache.cleanDisk()

}

edited Oct 05 '16 at 19:00

answered Oct 05 '16 at 18:56

Bista

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Thanks for the response. How can I link this up to a UIButton? Would it be through an outlet? – Miles Oct 05 '16 at 18:58
Got it, thanks! I am getting an error that says: Use of unresolved identifier 'SDImageCache'. Would I need to import it in my bridging header? – Miles Oct 05 '16 at 19:05
Have you ‘import SDWebImage`? And which swift version are you using? – Bista Oct 05 '16 at 19:06
Here's my bridging header: #import "SDWebImage/UIImageView+WebCache.h" #import "SDWebImane" It says that 'SdWebImane' file not found – Miles Oct 05 '16 at 19:12
I imported SDWebImage, and I think I'm using Swift 2.2 – Miles Oct 05 '16 at 19:20
I didn't write "import SDWebImage" on the .swift file attached to the View controller. It works now that I've wrote it! – Miles Oct 05 '16 at 20:41
As of this date cleanDisk and clearDisk are missing from SDImageCache.h. But they're still in http://cocoadocs.org/docsets/SDWebImage/3.3/Classes/SDImageCache.html#//api/name/clearDisk – Bob Lissner Apr 01 '18 at 20:45

score 1 · Answer 3 · answered Nov 23 '18 at 10:12

1

Swift 4.2 , Xcode 10

pod 'SDWebImage', '5.0.0-beta3'

import SDWebImage

 @IBAction func ClearCacheButtonClick(_ sender: UIButton) {
     SDImageCache.shared.clearMemory()
     SDImageCache.shared.clearDisk()
 }

answered Nov 23 '18 at 10:12

Vishal Vaghasiya

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score 1 · Answer 4 · answered Jan 12 '21 at 01:06

To delete all data from cache

SDImageCache.shared.clear(with: .all) {
    print("Disk & memory data cleared")
}

To delete data from only memory

SDImageCache.shared.clear(with: .memory) {
    print("Memory data cleared")
}

To delete data from disk

SDImageCache.shared.clear(with: .disk) {
    print("Disk data cleared")
}

score 0 · Answer 5 · answered May 25 '20 at 06:50

0

Swift 5

import SDWebImage

  SDImageCache.shared.clearMemory()

  SDImageCache.shared.clearDisk()

answered May 25 '20 at 06:50

Girisankar.G

1
4

How to clear all cached images loaded from SDWebImage?

5 Answers5

Obj-c:

Swift 5

Swift 3.0

Swift 5

Linked