实施PHPhotoLibraryChangeObserver协议我想设置我的AssetService为changeObserver,但我得到了如下因素的错误:在迅速
Error:(8, 14) type 'AssetService' does not conform to protocol 'PHPhotoLibraryChangeObserver'
虽然photoLibraryDidChange是唯一需要的方法。这里是我的代码:
import UIKit
import Photos
public class AssetService : PHPhotoLibraryChangeObserver {
public init() {
// here I do some other stuff
PHPhotoLibrary.sharedPhotoLibrary().registerChangeObserver(self)
}
public func photoLibraryDidChange(changeInstance: PHChange) {
dispatch_async(dispatch_get_main_queue(), {
})
}
}