swift 获取手机相册

获取所有相册的名称和图片

  func getAllAlbumInformation() -> [[PHFetchResult]]{
    var allSmartAlbums = [PHFetchResult]()
    //  所有图片
    let allOptions = PHFetchOptions()
    //  时间排序
    allOptions.sortDescriptors = [NSSortDescriptor(key: "creationDate", ascending: true)]
    let allPhotos = PHAsset.fetchAssetsWithOptions(allOptions)
    allSmartAlbums.append(allPhotos)
  
    let smartAlbums:PHFetchResult = PHAssetCollection.fetchAssetCollectionsWithType(PHAssetCollectionType.SmartAlbum, subtype: PHAssetCollectionSubtype.AlbumRegular, options: nil)
    //  智能相册---最近添加
    let collection = smartAlbums.objectAtIndex(SmartAlbumsType.RecentlyAdded.hashValue) as! PHAssetCollection
    let recentely = PHAsset.fetchAssetsInAssetCollection(collection, options: nil)
    allSmartAlbums.append(recentely)
  
    //  智能相册---屏幕截图
    let screenshot = smartAlbums.objectAtIndex(SmartAlbumsType.Screenshots.hashValue) as! PHAssetCollection
    let screenshotResult = PHAsset.fetchAssetsInAssetCollection(screenshot, options: nil)
    allSmartAlbums.append(screenshotResult)
  
    //  智能相册---个人收藏
    let favorite = smartAlbums.objectAtIndex(SmartAlbumsType.Favorites.hashValue) as! PHAssetCollection
    let favoriteResult = PHAsset.fetchAssetsInAssetCollection(favorite, options: nil)
    allSmartAlbums.append(favoriteResult)
  
    //  个人自定义相册
    let userDeterminAlbums = PHCollectionList.fetchTopLevelUserCollectionsWithOptions(nil)

    let allAlbums = [allSmartAlbums,[userDeterminAlbums]]

    PHPhotoLibrary.sharedPhotoLibrary().registerChangeObserver(self)
  
    return allAlbums
 }

通过上面的方法获取了所有的相册分类和图片,下面解析这个图片

  let all = getAllAlbumInformation()
  let singleAsset = all[0][0][8] as! PHAsset
  
  let options = PHImageRequestOptions()
  // deliveryMode 控制获取的图像的质量
  options.deliveryMode = .HighQualityFormat
  //networkAccessAllowed是否允许网络请求,可以从icloud获取更加清晰的图像
  options.networkAccessAllowed = true
  options.progressHandler = { (progress, error, stop, info) in
     //可以控制进度条
     print(progress)
  }

  //resizeMode 设置为.Exact 则返回图像必须和目标大小相匹配，并且图像质量也为高质量图像，而设置为 .Fast 则请求的效率更高，但返回的图像可能和目标大小不一样并且质量较低。
  //options 的 synchronous 属性，默认为 NO,同步操作。注意：当 synchronous 设为 true 时，deliveryMode 属性就会被忽略，并被当作 .HighQualityFormat 来处理。
  //normalizedCropRect 设置裁剪大小 如CGRect(origin: CGPoint(x: 0,y: 0), size: CGSize(width: 200,height: 200))
  
  PHImageManager.defaultManager().requestImageForAsset(singleAsset, targetSize: PHImageManagerMaximumSize,contentMode: PHImageContentMode.AspectFill, options: options, resultHandler: { (result, info) in
    //result 是 拿到的UIImage
  })

上面代码有什么不正确的地方,请在下方留言告诉我.如果我的文章对您有所帮助,我会非常高兴!