iOS 8 Photos framework. Access photo metadata

Question

I\'m looking at replacing ALAssetsLibrary with Photos framework in my app.

I can retrieve photos, collections, and asset sources just fine (even write t

Answer 1

I prefer not to CIImage solution, but to ImageIO solution:

func imageAndMetadataFromImageData(data: NSData)-> (UIImage?,[String: Any]?) {
    let options = [kCGImageSourceShouldCache as String: kCFBooleanFalse]
    if let imgSrc = CGImageSourceCreateWithData(data, options as CFDictionary) {
        let metadata = CGImageSourceCopyPropertiesAtIndex(imgSrc, 0, options as CFDictionary) as! [String: Any]
        //print(metadata)
        // let image = UIImage(cgImage: imgSrc as! CGImage)
        let image = UIImage(data: data as Data)
        return (image, metadata)
    }
    return (nil, nil)
}

below is code to get data from PHAseet

func getImageAndMeta(asset: PHAsset){
    let options = PHImageRequestOptions()
    options.isSynchronous = true
    options.resizeMode = .none
    options.isNetworkAccessAllowed = false
    options.version = .current
    var image: UIImage? = nil
    var meta:[String:Any]? = nil
    _ = PHCachingImageManager().requestImageData(for: asset, options: options) { (imageData, dataUTI, orientation, info) in
        if let data = imageData {
            (image, meta) = imageAndMetadataFromImageData(data: data as NSData)
            //image = UIImage(data: data)
        }
    }
    // here to return image and meta
}