ios - FBSDKAppInviteDialogDelegate 的 Swift 实现不起作用

Question

我正在尝试在我的类上实现协议(protocol) FBSDKAppInviteDialogDelegate，但 xcode 向我显示一个错误，提示“Type MyClass does not conform to protocol 'FBSDKAppInviteDialogDelegate'”

协议(protocol)定义:

@protocol FBSDKAppInviteDialogDelegate <NSObject>

/*!
@abstract Sent to the delegate when the app invite completes without error.
@param appInviteDialog The FBSDKAppInviteDialog that completed.
@param results The results from the dialog.  This may be nil or empty.
*/
- (void)appInviteDialog:(FBSDKAppInviteDialog *)appInviteDialog didCompleteWithResults:(NSDictionary *)results;

/*!
@abstract Sent to the delegate when the app invite encounters an error.
@param appInviteDialog The FBSDKAppInviteDialog that completed.
@param error The error.
*/
- (void)appInviteDialog:(FBSDKAppInviteDialog *)appInviteDialog didFailWithError:(NSError *)error;

@end

我的代码:

我类(class)的定义

class MyClasse: UITableViewController, FBSDKAppInviteDialogDelegate

调用邀请对话框:

var inviteDialog:FBSDKAppInviteDialog = FBSDKAppInviteDialog()
if(inviteDialog.canShow()){
    let appLinkUrl:NSURL = NSURL(string: "http://mylink.com")!
    let previewImageUrl:NSURL = NSURL(string: "http://mylink.com/image.png")!

    var inviteContent:FBSDKAppInviteContent = FBSDKAppInviteContent(appLinkURL: appLinkUrl)
    inviteContent.previewImageURL = previewImageUrl

    inviteDialog.content = inviteContent
    inviteDialog.delegate = self
    inviteDialog.show()
}

协议(protocol)方法的实现:

//function of FBSDKAppInviteDialogDelegate
func appInviteDialog(appInviteDialog: FBSDKAppInviteDialog!, didCompleteWithResults results: NSDictionary!){
    // my code here
}
//function of FBSDKAppInviteDialogDelegate
func appInviteDialog(appInviteDialog: FBSDKAppInviteDialog!, didFailWithError error: NSError!){
    // my code here
}

邀请对话框有效。但是没有协议(protocol)我无法得到结果。

我在这里缺少什么？

Answer 1

问题出在 NSDictionary 上。以下对我有用:

func appInviteDialog(appInviteDialog: FBSDKAppInviteDialog!, didCompleteWithResults results: [NSObject : AnyObject]!) {
    println("Complete invite without error")
}

func appInviteDialog(appInviteDialog: FBSDKAppInviteDialog!, didFailWithError error: NSError!) {
    println("Error in invite \(error)")
}