如何获取PHAsset的URL？ [英] How to get URL for a PHAsset?

问题描述

我正在使用第三方库从照片库中选择多个图像。在选择多个图像时，它返回一组PHAsset对象。
现在，我想在核心数据中保存这些对象的URL（或一些引用）。但我不知道如何获取URL。我可以在核心数据中存储任何其他参考资料，这可以帮助我从照片库中获取相同的图像吗？

I am using a third party library to select multiple images from the Photo Library. On selecting multiple images it returns an array of PHAsset objects. Now, I want to save the URL (or some reference) for these objects in the core data. But I do not know how to get the URL. Is there any other reference I could store in the core data which could help me in fetching the same image from the photo library?

推荐答案

我使用了Hitesh surani的答案，它完美无缺，我将其转换为Swift 3.1并将其放入PHAsset的扩展中为了在任何地方使用该方法，这里是：

I used Hitesh surani answer and it worked perfect, I converted it into Swift 3.1 and put it into an extension of PHAsset in order to use that method everywhere, here it is:

extension PHAsset {

    func getURL(completionHandler : @escaping ((_ responseURL : URL?) -> Void)){
        if self.mediaType == .image {
            let options: PHContentEditingInputRequestOptions = PHContentEditingInputRequestOptions()
            options.canHandleAdjustmentData = {(adjustmeta: PHAdjustmentData) -> Bool in
                return true
            }
            self.requestContentEditingInput(with: options, completionHandler: {(contentEditingInput: PHContentEditingInput?, info: [AnyHashable : Any]) -> Void in
                completionHandler(contentEditingInput!.fullSizeImageURL as URL?)
            })
        } else if self.mediaType == .video {
            let options: PHVideoRequestOptions = PHVideoRequestOptions()
            options.version = .original
            PHImageManager.default().requestAVAsset(forVideo: self, options: options, resultHandler: {(asset: AVAsset?, audioMix: AVAudioMix?, info: [AnyHashable : Any]?) -> Void in
                if let urlAsset = asset as? AVURLAsset {
                    let localVideoUrl: URL = urlAsset.url as URL
                    completionHandler(localVideoUrl)
                } else {
                    completionHandler(nil)
                }
            })
        }
    }
}

这篇关于如何获取PHAsset的URL？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！