如何从 PHAsset 获取原始图像和媒体类型？

My **GMImagePickerController**返回从照片应用程序中选择的图像的列表。

代码如下。

  - (void)assetsPickerController:(GMImagePickerController *)picker  didFinishPickingAssets:(NSArray *)assetArray
     {
        NSLog(@"%@",assetArray);
        NSLog(@"GMImagePicker: User ended picking assets. Number of selected items is: %lu", (unsigned long)assetArray.count);
  }

assetArray返回结果是这样的，我从照片应用程序中选择了3张图像

 (
"<PHAsset: 0x7fa39e02e840> 1AEEF04A-F8AB-4019-AAB5- 2875CFD8F8E3/L0/001 mediaType=1/0, sourceType=1, (425x425), creationDate=2016-02-03 13:53:17 +0000, location=0, hidden=0, favorite=0 ",
"<PHAsset: 0x7fa39e02c840> 50489C13-55D0-4518-B290-B01B99D66996/L0/001 mediaType=1/0, sourceType=1, (425x335), creationDate=2016-02-03 13:53:08 +0000, location=0, hidden=0, favorite=0 ",
"<PHAsset: 0x7fa39e02c750> D0A466B2-9CF2-4FD9-A12F-07921A1D0E8F/L0/001 mediaType=1/0, sourceType=1, (425x365), creationDate=2016-02-03 13:53:04 +0000, location=0, hidden=0, favorite=0 "
 )

现在的问题是我想得到OriginalImage and mediaType从上面的结果将图像存储到文档目录中。 请帮我解决这个问题。

要检查媒体类型，您可以使用 Phaseset 的以下属性

if asset.mediaType == .image{
 //do anything for image asset

}else if asset.mediaType == .video{
 //do anything for video asset

}else if asset.mediaType == .audio{
 //do anything for audio asset
}

要从 PHAsset 获取原始图像，您可以执行以下操作：

let requestImageOption = PHImageRequestOptions()
requestImageOption.deliveryMode = PHImageRequestOptionsDeliveryMode.highQualityFormat

let manager = PHImageManager.default()
manager.requestImage(for: asset, targetSize: PHImageManagerMaximumSize, contentMode:PHImageContentMode.default, options: requestImageOption) { (image:UIImage?, _) in
        // process the original image
 }