Photos framework ascending in Swift - ios

Question

I have a collectionView running in my project that fetches iPhone photo library by using Photos framework successfully.I am trying to ascending the photo collectionView from last photo.I am using the following code....
func getAllPhotosInfo() {
photoAssets = []
let options = PHFetchOptions()
options.sortDescriptors = [
NSSortDescriptor(key: "creationDate", ascending: false)
]
let assets: PHFetchResult = PHAsset.fetchAssetsWithMediaType(.Image, options: options)
assets.enumerateObjectsUsingBlock { (asset, index, stop) -> Void in
self.photoAssets.append(asset as! PHAsset)
}
print(photoAssets)
}
//PHAsset to image conversion
import UIKit
import Photos
class CollectionViewCell: UICollectionViewCell {
var imageManager: PHImageManager?
#IBOutlet weak var photoImageView: UIImageView!
var imageAsset: PHAsset? {
didSet {
self.imageManager?.requestImageForAsset(self.imageAsset!, targetSize: CGSize(width: 320, height: 320), contentMode: .AspectFill, options: nil) { image, info in
self.photoImageView.image = image
}
}
}
}

Answer 1

I was playing with the Photos framework doc and I found the answer.here is the working code....
var photoAssets = [PHAsset]()
func getAllPhotosInfo() {
photoAssets = []
let options = PHFetchOptions()
options.sortDescriptors = [ NSSortDescriptor(key: "creationDate", ascending: false) ]
options.predicate = NSPredicate(format: "mediaType = %i", PHAssetMediaType.Image.rawValue)
let assetCollections = PHAssetCollection.fetchAssetCollectionsWithType(PHAssetCollectionType.SmartAlbum, subtype: PHAssetCollectionSubtype.SmartAlbumUserLibrary, options: nil)
for i in 0 ..< assetCollections.count
{
if let assetCollection = assetCollections[i] as? PHAssetCollection
{
images = PHAsset.fetchAssetsInAssetCollection(assetCollection, options: options)
print(images.count)
return
}
}
}