swift - 从 facebook-ios-sdk 切换到 facebook-swift-sdk，在新代码中使用 FBSDKAppInviteDialogDelegate

Question

我正在从 Facebook iOS SDK 切换到 Facebook Swift SDK。

我想收到应用邀请结果的通知。这是我在旧代码中的内容:

extension VolumesListViewController: FBSDKAppInviteDialogDelegate {

    public func appInviteDialog(_ appInviteDialog: FBSDKAppInviteDialog!, didFailWithError error: Error!) {
        ...
    }


    func appInviteDialog(_ appInviteDialog: FBSDKAppInviteDialog!, didCompleteWithResults results: [AnyHashable: Any]!) {
        ...
    }
}

看来在Swift SDK中，这个DialogDelegate被封装到框架中，并没有开放实现:

所以，这是 SDKDelegate:

extension AppInvite {
    internal class SDKDelegate: NSObject, FBSDKAppInviteDialogDelegate {
        internal var completion: ((Result) -> Void)?

        func setupAsDelegateFor(_ dialog: FBSDKAppInviteDialog) {
          // We need for the connection to retain us,
          // so we can stick around and keep calling into handlers,
          // as long as the connection is alive/sending messages.
          objc_setAssociatedObject(dialog,     Unmanaged.passUnretained(self).toOpaque(), self, .OBJC_ASSOCIATION_RETAIN)
          dialog.delegate = self
        }

        func appInviteDialog(_ appInviteDialog: FBSDKAppInviteDialog?, didCompleteWithResults results: [AnyHashable: Any]?) {
           completion?(.success(results?.keyValueFlatMap { ($0 as? String, $1 as? String) } ?? [:]))
        }

        func appInviteDialog(_ appInviteDialog: FBSDKAppInviteDialog?, didFailWithError error: Error) {
          completion?(.failed(error))
        }
    }
 }

如何在不使用旧框架的情况下通过通知实现相同的效果？

我的理由是这样的:

The frameworks for the Facebook SDK in Swift are organized in the same way as the Facebook SDK for iOS . They also depend upon the Facebook SDK for iOS, although this may change at some point in the future.

Answer 1

因此，为了让一切变得清晰，我只需在 SO 上发布一个问题即可:

这就是我发现的:我可以使用 AppInvite.Dialog.show(from:invite:) 的尾随闭包来从对话框获取反馈:

let appInvite = AppInvite(appLink: URL(string: "http://eggheadgames.com/cryptograms")!)
do {
    try AppInvite.Dialog.show(from: self, invite: appInvite) { result in
        switch result {
        case .success(_):
            Logger.logUIEvent("InviteFriend", label: "called")
        case .failed(_):
            Logger.logUIEvent("InviteFriend", label: "unavailable")
        }
    }
} catch _ {
    Logger.logUIEvent("InviteFriend", label: "unavailable")
}