通过编程将资产添加到iCloud共享相册 [英] Add assets to an iCloud shared photo album programmatically

问题描述

使用PhotoKit将照片添加到Shared iCloud相册是否有任何限制?虽然我可以将新照片添加到作为常规相册的AssetCollections中，但是如果AssetCollection代表iCloud共享相册，则根本不起作用.我还需要添加其他类型的PHAsset吗?

Are there any limitations on using PhotoKit to add photos to Shared iCloud photo albums? While I can add new photos to AssetCollections that are regular albums, it does not work at all if the AssetCollection represents an iCloud sharing album. Do I also need to add a different type of PHAsset?

如果将fetchAssetCollections调用更改为使用.albumRegular而不是.albumCloudShared，则下面的代码有效.否则我会报错:

If I change the fetchAssetCollections call to use .albumRegular instead of .albumCloudShared, the code below works. Otherwise I get an error:

The operation couldn't be completed. (PHPhotosErrorDomain error -1.)

let sharedAlbums = PHAssetCollection.fetchAssetCollections(with: .album, subtype: .albumCloudShared, options: nil)

let target = sharedAlbums.firstObject

PHPhotoLibrary.shared().performChanges({
    let assetChangeRequest = PHAssetChangeRequest.creationRequestForAsset(from: wantedimage)
    let assetPlaceHolder = assetChangeRequest.placeholderForCreatedAsset
    let albumChangeRequestShared = PHAssetCollectionChangeRequest(for: target!)
    let enumeration: NSArray = [assetPlaceHolder!]
    albumChangeRequestShared!.addAssets(enumeration)
}, completionHandler: { result, error in 
    print(result)
    print(error)
    print(error?.localizedDescription)
})

推荐答案

是的，您不能将图像添加到iCloud共享相册.

Yes, you can't add images to an iCloud shared album.

在执行更改请求之前，您应该在PHAssetCollection上调用canPerform(_:).

Prior to performing a change request you should call canPerform(_:) on the PHAssetCollection.

如果在albumCloudShared的PHAssetCollectionSubtype上调用canPerform(_:)，它将返回false.

If you call canPerform(_:) on a PHAssetCollectionSubtype of albumCloudShared it will return false.

例如:

    print(collection.canPerform(.createContent)) //false
     
    print(collection.canPerform(.addContent)) //false 

我遇到了同样的问题，并通过反馈"应用提交了功能请求.

I had this same problem and submitted a feature request via the Feedback app.

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