iOS Gamecenter Programmatic Matchmaking

Question

我正在嘗試使用自定義UI（沒有GKMatchMakerViewController）實現實時多人遊戲。我使用startBrowsingForNearbyPlayersWithReachableHandler: ^(NSString *playerID, BOOL reachable)找到一個本地玩家，然後用GKMatchmaker singleton（我已經發起）發起一個匹配請求。

這是我遇到麻煩的地方。當我發送請求時，完成處理程序幾乎立即觸發，沒有錯誤，並且它返回的匹配具有預期的玩家數爲零。同時，另一位玩家肯定沒有迴應這個請求。

相關代碼：

- (void) findMatch 
{ 
GKMatchRequest *request = [[GKMatchRequest alloc] init]; 
request.minPlayers = NUM_PLAYERS_PER_MATCH; //2 
request.maxPlayers = NUM_PLAYERS_PER_MATCH; //2 
if (nil != self.playersToInvite) 
{ 
    // we always successfully get in this if-statement 
    request.playersToInvite = self.playersToInvite; 
    request.inviteeResponseHandler = ^(NSString *playerID, GKInviteeResponse 
             response) 
    { 
     [self.delegate updateUIForPlayer: playerID accepted: (response == 
                   GKInviteeResponseAccepted)]; 
    }; 
} 
request.inviteMessage = @"Let's Play!"; 

[self.matchmaker findMatchForRequest:request 
    withCompletionHandler:^(GKMatch *match, NSError *error) { 
     if (error) { 
      // Print the error 
      NSLog(@"%@", error.localizedDescription); 
     } 
     else if (match != nil) 
     { 
      self.currentMatch = match; 
      self.currentMatch.delegate = self; 

      // All players are connected 
      if (match.expectedPlayerCount == 0) 
      { 
       // start match 
       [self startMatch]; 
      } 
      [self stopLookingForPlayers]; 
     } 
    }]; 
} 

Answer 1

想通了！我需要在我的邀請處理程序中撥打- (void)matchForInvite:(GKInvite *)invite completionHandler:(void (^)(GKMatch *match, NSError *error))completionHandler，以便兩位球員擁有相同的比賽數據。