Asset对象转为UIImage

//asset对象转UIimage

    func getImageFromPHAsset(asset: PHAsset, result: (_ data: NSData?, _ fileName: String?) -> Void) {

        var data = NSData.init()

        if asset.mediaType == PHAssetMediaType.image {

            let options = PHImageRequestOptions.init()

            options.version = PHImageRequestOptionsVersion.current

            options.deliveryMode = PHImageRequestOptionsDeliveryMode.highQualityFormat

            options.isSynchronous = true

            PHImageManager.default().requestImageData(for: asset, options: options, resultHandler: { (imageData, dataUTI, orientation, info) in

                data = NSData.init(data: imageData!)

            })

        }


        let filName = asset.value(forKey: "filename") as? String


        if data.length > 0 {

            result(data, filName)

        } else {

            result(nil, nil)

        }

    }

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