While converting PHAsset to UIImage losing transparency

Question

After I pick an image from Image picker and try to convert PHAsset to UIImage image is losing transparency of the png Image. I tried searching everywhere but didn't find anything about it.

  func getAssetThumbnail(asset: PHAsset) -> UIImage {
        let manager = PHImageManager.defaultManager()
        let option = PHImageRequestOptions()
        var thumbnail = UIImage()
        option.synchronous = true
        manager.requestImageForAsset(asset, targetSize: CGSize(width: 341.0, height: 182.0), contentMode: .AspectFit, options: option, resultHandler: {(result, info)->Void in
            thumbnail = result!
        })
        return thumbnail
    }

Image before

After selecting and setting it to image view

Have you tried using the original image data to create an image, i.e. Call `requestImageDataForAsset` with `PHImageRequestOptions.version = . Original`. You can then create the image from `UIImage(data: data)`. — Luke Van In, Jul 09 '16 at 16:08
Yeah, Luke, it worked post it as answer so i can accept it :) — O-mkar, Jul 09 '16 at 16:14
Great when a hunch works out :) Feel free to edit the answer. — Luke Van In, Jul 09 '16 at 16:20

score 8 · Accepted Answer · answered Jul 09 '16 at 16:19

8

Get the original image data by calling requestImageDataForAsset with PHImageRequestOptions.version = . Original. You can then create the image from UIImage(data: data).

Example:

 func getThumbnail(asset: PHAsset) -> UIImage? {

    var thumbnail: UIImage?

    let manager = PHImageManager.defaultManager()

    let options = PHImageRequestOptions()

    options.version = .Original
    options.synchronous = true

    manager.requestImageDataForAsset(asset, options: options) { data, _, _, _ in

        if let data = data {
            thumbnail = UIImage(data: data)
        }
    }

    return thumbnail
}

answered Jul 09 '16 at 16:19

Luke Van In

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it returns nil somethimes as image is set from inner block, is there any solution for this issue??? – Patel Jigar Oct 30 '17 at 12:05
It works BUT users want to see transparent and cropped (adjusted) image, how to deal with it? – Ancle Aug 02 '20 at 09:22

While converting PHAsset to UIImage losing transparency

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