在阅读了很多用ObjectivC编写的答案之后,我终于想出了如何使用Xcode 6.2在Swift中编写此答案:
ALAssetsLibrary().writeImageToSavedPhotosAlbum(image.CGImage, orientation: ALAssetOrientation(rawValue: image.imageOrientation.rawValue)!,
completionBlock:{ (path:NSURL!, error:NSError!) -> Void in
println("\(path)")
})