Get NSData from assets-library URL

Question

I\'m trying to get NSData from mp4 file from device library.

This link look like this:

assets-library://asset/asset.mp4?id=32515720-939A-456F-958F-0B         


        

Answer 1

Swift 3: 1. Request Asset from Photos Library 2. Request Data from Asset 3. Return block

   func getDataFromAssetAtUrl( assetUrl: URL, success: @escaping (_ data: NSData) -> ()){
    let fetchResult = PHAsset.fetchAssets(withALAssetURLs: [assetUrl], options: nil)
    if let phAsset = fetchResult.firstObject {
        PHImageManager.default().requestImageData(for: phAsset, options: nil) {
            (imageData, dataURI, orientation, info) -> Void in
            if let imageDataExists = imageData {
                success(imageDataExists as NSData)
            }
        }
    }
}

example use:

import Photos //this on top of your file

open func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
        dismiss(animated: true, completion: nil)
        let assetUrl = assetDataFromMediaInfo(info: info)!
        getDataFromAssetAtUrl(assetUrl: assetUrl) { (dataOfAsset) in
            //TODO do something with NSData
        }
    }