Removing a GKTurnBasedMatch which is in an invalid state

Question

I am doing some experimentation to try to learn about GameKit and I made a simple game and an interface which lists my player's matches. I am trying to add the ability to remove games using the `removeWithCompletionHandler:` method on the match, but I am having trouble removing a `GKTurnBasedMatch` which seems to have entered an invalid state. A po of the match in question prints: ``` $0 = 0x1d590d20 participants: > ``` Which seems to indicate that the match has been ended. However, one of…

Accepted Answer

This is how I managed to remove all invalid matches.

I checked the status of the current participant, if it's invited, I called declineInviteWithCompletionHandler, otherwise I called participantQuitInTurnWithOutcome.

In both completion blocks, I then called removeWithCompletionHandler to remove the match.

This generated a few errors but the matches were still removed so my list is clean.

And here is a workaround on how to avoid getting to this state to begin with. This has the added benefit that the invitee never even get a notification if the inviter quits before finishing his/hers first turn.

In playerQuitForMatch, first end the turn and then in the completion handler, immediately quit the match. Like so,

```
[match endTurnWithNextParticipants:[NSArray arrayWithObject:nextParticipant]
                                          turnTimeout:GKTurnTimeoutDefault
                                            matchData:nil completionHandler:^(NSError *error) {
                                                if (error) {
                                                    NSLog(@"%@", error);
                                                }

[match participantQuitOutOfTurnWithOutcome:GKTurnBasedMatchOutcomeQuit
                                                                     withCompletionHandler:^(NSError *error) {
                                                                         if (error) {
                                                                             NSLog(@"%@" ,error);
                                                                         }
                                                                     }];
                                            }];
```

Removing a GKTurnBasedMatch which is in an invalid state

Solution

Problem