收到的GameCenter邀请中没有玩家

Question

我试图让我的游戏允许1个设备（iPhone）使用GameCenter邀请朋友来玩（iPad）。我正在使用standarddefault MatchMaker界面。iPhone向iPad发送邀请，iPad会出现一个通知。

当我按下这个通知时，iPad的 "player(GKPlayer, didAccept: GKInvite) "例程确实被调用。

  @objc func player(_ playerMe: GKPlayer, didAccept invite: GKInvite) {
    print("\n\n\t\tplayer \(playerMe.displayName)(\(playerMe.playerID)) did accept INVITE sent by \(invite.sender.displayName)(\(invite.sender.playerID))")
    GKMatchmaker.shared().match(for: invite, completionHandler: {(InvitedMatch, error) in

      print("\t\tplayers.count = \(InvitedMatch!.players.count)")

      if error != nil {
        print("INVITE ERROR: \(error.debugDescription)")
      }

      if InvitedMatch != nil {
        print("\t\tSetting current match. (\(InvitedMatch.debugDescription))")
        self.currentMatch = InvitedMatch
        self.currentMatch?.delegate = self
//        self.prepareMatch()
      }
    })
  }

输出。

        player Me(G:25139341913) did accept INVITE sent by ‎“-----”(G:12453976)
        players.count = 0
        Setting current match. (Optional(<GKMatch 0x282d39970 expected count: 1 seqnum: 0
    G:12453976:unknown
reinvitedPlayers:(
)>))

玩家数组是空的！至少应该有邀请者在里面吧？'expectedPlayerCount'正确地反映了2个人的matchRequest，其中1个玩家（邀请者）已经是参与者了。

任何时候，两端都没有调用'player(GKPlayer，didRequestMatchWithRecipients：[GKPlayer])'。

所以，iPad没有进入球员设置比赛的权限，但iPhone看到邀请被接受，有2个球员，就继续前进。iPhone的代码。

  func matchmakerViewController(_ viewController: GKMatchmakerViewController, didFind match: GKMatch) {
    print("\n\n\t\tMATCH FOUND\n\n")
    viewController.dismiss(animated: true, completion: nil)

    GKMatchmaker.shared().stopBrowsingForNearbyPlayers()
    currentMatch = match
    match.delegate = self

    if Globals.gameState?.currentState is StateWaitingForMatch {
      if currentMatch?.expectedPlayerCount == 0 {
        prepareMatch()
      }
    }
  }

那我怎么才能让iPad（邀请函的接收方）看到包括球员？

Answer 1

在player(GKPlayer, invite: GKInvite)方法中，通过GKMatchMakerViewController创建一个GKMatchMakerViewController。

让mmvc = GKMatchmakerViewController(invite: invite!)

然后呈现它。

viewController.present(mmvc!, animated: true, completion: nil)