IOS - SWIFT - CollectionView With images, loading URLs from array -


i have collection view , array urls of different images. , when launch app, collection view starts load images through array:

func collectionview(collectionview: uicollectionview, cellforitematindexpath indexpath: nsindexpath) -> uicollectionviewcell {     var cell = collectionview.dequeuereusablecellwithreuseidentifier("cell", forindexpath: indexpath) as! cellview      var url = arr[indexpath.row]      var urls = nsurl(string: url)     var data = nsdata(contentsofurl: urls!)      cell.imageview.image = uiimage(data: data!)      return cell }

and trouble appearse: example on 4th cell collection view loading 4 urls 4 cells , takest alot time. how can collection view load particular url particular cell , don't spend time load urls cells loaded?

thanks help!!

i suggest using third party library matter, called sdwebimage.

and each image view inside cell set:

self.imageview.sd_setimagewithurl(url, completed: block)

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