swift两种获取相册资源PHAsset的路径的方法（绝对路径）

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方法中使用到的phasset就是我们取到的PHAsset对象

方法一：

 1 let options = PHVideoRequestOptions()
 2 
 3 options.version = PHVideoRequestOptionsVersion.current
 4 
 5 options.deliveryMode = PHVideoRequestOptionsDeliveryMode.automatic
 6 
 7 let manager =PHImageManager.default()
 8 
 9 manager.requestAVAsset(forVideo: phasset, options: options, resultHandler: { (asset, audioMix, info) in
10 
11        let strArr =     ((info!asNSDictionary).object(forKey:"PHImageFileSandboxExtensionTokenKey")as!NSString).components(separatedBy:";")
12 
13        let url = strArr.last！
14 
15        print(url)
16 
17 })

方法二（比较简洁）：

1 PHCachingImageManager().requestAVAsset(forVideo: phasset as PHAsset, options:nil, resultHandler: { (asset, audioMix, info) in
2 
3          let strArr =     ((info!asNSDictionary).object(forKey:"PHImageFileSandboxExtensionTokenKey")as!NSString).components(separatedBy:";")
4 
5         let url = strArr.last！
6 
7         print(url)
8 
9 })