How to use sdimage in uiimage caching?

Question

Anyway to handle or display UIImage with caching and with placeholder?

I have found one answer from stack exchange but it didnot work for me given below the link :

Best way to cache images on ios app?

Notes: I dont have any URL because i get image object of PHIMAGE asset library.

There's no need to cache when you are using image asset library. The images are copied to your bundle when build so they are always there. — Jasper, Jan 05 '16 at 13:08
Are you using [PHImageManager](http://nshipster.com/phimagemanager/)? — Jasper, Jan 05 '16 at 13:12
@rptwsthi, my all images are in photo library means in iPhone. — SmarterSusheel, Jan 07 '16 at 09:09
@Jasper I think you are right i check it properly and issue is solved automatically. there is an issue about reload the cell but rightnow it is solved by me. thanks a lot — SmarterSusheel, Jan 07 '16 at 11:15

score 0 · Answer 1 · answered Jan 05 '16 at 12:17

0

You can use SDWebImage
It is very simple to display and cache image.

[imageView sd_setImageWithURL:[NSURL URLWithString:@"http://www.image_url.com"]
                  placeholderImage:[UIImage imageNamed:@"placeholder.png"]];

answered Jan 05 '16 at 12:17

But i dont have any URL i have an image of phimage object so i cant get any URL – SmarterSusheel Jan 05 '16 at 12:28

score 0 · Answer 2 · answered Jan 05 '16 at 12:21

You can use a very usefull library called SDWebImage

SDWebImage automagically cache all your images when you provide a valid URL with the sd_setImageWithURL. So the next time you call it, will use the cache system instead of re-download the image.

Example to implement in a UIImageView from their github:

// Here we use the new provided sd_setImageWithURL: method to load the web image
[cell.imageView sd_setImageWithURL:[NSURL URLWithString:@"http://www.domain.com/path/to/image.jpg"]
                  placeholderImage:[UIImage imageNamed:@"placeholder.png"]];

But i dont have any URL i have an image of phimage object so i cant get any URL — SmarterSusheel, Jan 05 '16 at 12:25

score 0 · Answer 3 · answered Jan 07 '16 at 11:23

There was a problem of smoothing an all image while scroll the table but there is an issue of reload the cell not the caching problem i solved this issue.

I get an image one by one from local identifier which is provided by PHAsset framework and display that image into cell.

For reference Code:

PHFetchResult *savedAssets = [PHAsset fetchAssetsWithLocalIdentifiers:@[your local identifier] options:nil]; [savedAssets enumerateObjectsUsingBlock:^(PHAsset *asset, NSUInteger idx, BOOL *stop) {

        //this gets called for every asset from its localIdentifier you saved
        PHImageRequestOptions * imageRequestOptions = [[PHImageRequestOptions alloc] init];
        imageRequestOptions.synchronous = YES;
        imageRequestOptions.deliveryMode = PHImageRequestOptionsResizeModeFast;

        [[PHImageManager defaultManager]requestImageForAsset:asset targetSize:CGSizeMake(50,50) contentMode:PHImageContentModeAspectFill options:imageRequestOptions resultHandler:^(UIImage * _Nullable result, NSDictionary * _Nullable info) {
            NSLog(@"You get an image from result");

        }];
    }];

How to use sdimage in uiimage caching?

3 Answers3