照片框架在 Swift 中上升
Photos framework ascending in Swift
我的项目中有一个 collectionView 运行,它使用 Photos 框架获取 iPhone 照片库 successfully.I 我正在尝试从上次 photo.I 开始提升照片 collectionView使用以下代码....
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转图片
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
}
}
}
}
我正在研究 Photos 框架文档,我发现 answer.here 是工作代码....
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
}
}
}
我的项目中有一个 collectionView 运行,它使用 Photos 框架获取 iPhone 照片库 successfully.I 我正在尝试从上次 photo.I 开始提升照片 collectionView使用以下代码....
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转图片
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
}
}
}
}
我正在研究 Photos 框架文档,我发现 answer.here 是工作代码....
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
}
}
}