swift两种获取相册资源PHAsset的路径的方法（绝对路径）

方法中使用到的phasset就是我们取到的PHAsset对象

方法一：

let options = PHVideoRequestOptions()

options.version = PHVideoRequestOptionsVersion.current

options.deliveryMode = PHVideoRequestOptionsDeliveryMode.automatic

let manager =PHImageManager.default()

manager.requestAVAsset(forVideo: phasset, options: options, resultHandler: { (asset, audioMix, info) in

       let strArr =     ((info!asNSDictionary).object(forKey:"PHImageFileSandboxExtensionTokenKey")as!NSString).components(separatedBy:";")

       let url = strArr.last！

       print(url)

})

方法二（比较简洁）：

PHCachingImageManager().requestAVAsset(forVideo: phasset as PHAsset, options:nil, resultHandler: { (asset, audioMix, info) in

         let strArr =     ((info!asNSDictionary).object(forKey:"PHImageFileSandboxExtensionTokenKey")as!NSString).components(separatedBy:";")

        let url = strArr.last！

        print(url)

})