使用writeImageToSavedPhotosAlbum时获取文件名

Question

in an ios swift application, I am using writeImageToSavedPhotosAlbum to save a UIImage on the iphone

let assets : ALAssetsLibrary = ALAssetsLibrary()
let imgRef : CGImage = myImage!.CGImage
let orientation : ALAssetOrientation = ALAssetOrientation(rawValue: myImage!.imageOrientation.rawValue)!
assets.writeImageToSavedPhotosAlbum(imgRef, orientation: orientation, completionBlock: nil)

Is there a way I can get the saved image filename? or maybe to set it myself?

Thank you for any help

Answer 1

If you look at the spec of the method you're using you will see that the completion block you aren't using is of type ALAssetsLibraryWriteImageCompletionBlock , which has the parameters NSURL *assetURL, NSError *error .

So specify a completion block and you get the asset URL from which you can derive some information.

Answer 2

You can get the file path information using the completion block parameter. Instead of passing nil pass the block like:

assets.writeImageToSavedPhotosAlbum(imgRef, orientation: orientation, completionBlock:
{ (path:NSURL!, error:NSError!) -> Void in
        println("\(path)")
})

Check the ALAssetLibrary Class Reference for more information