iphone - 接受传入请求时 Gamekit API 错误

Question

我做了一个带蓝牙模式的iPhone游戏，可以通过蓝牙进行1对1的游戏。我的选择器实现如下:

picker = [[GKPeerPickerController alloc] init];
picker.delegate = self;
picker.connectionTypesMask = GKPeerPickerConnectionTypeNearby;
[picker show];

我不知道哪个代码给出了错误，所以我还将粘贴与选择器有关的所有其他方法的代码:

- (void) receiveData:(NSData *)data fromPeer:(NSString *)peer inSession: (GKSession *)session context:(void *)context {
  NSString *dataString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
  NSDictionary *dataDictionary = [NSDictionary dictionaryWithObjects: [NSArray arrayWithObjects:dataString, peer, session, nil] forKeys:[NSArray arrayWithObjects:@"data", @"peer", @"session", nil]];
  [dataString release];
  [self performSelectorOnMainThread:@selector(receivedData:) withObject:dataDictionary waitUntilDone:YES];
}
- (GKSession *)peerPickerController:(GKPeerPickerController *)picker
    sessionForConnectionType:(GKPeerPickerConnectionType)type {
  // Create a new session if one does not already exist
    if (!self.currentSession) {
      self.currentSession = [[[GKSession alloc] initWithSessionID:@"Session" displayName:nil sessionMode:GKSessionModePeer] autorelease];
      self.currentSession.delegate = self;
    }
    return self.currentSession;
  }
  -(void)peerPickerController:(GKPeerPickerController *)pk didConnectPeer:(NSString *)peerID toSession:(GKSession *)session {
    self.currentSession = session;
    session.delegate = self;
    [session setDataReceiveHandler:self withContext:nil];
    picker.delegate = nil;
    [picker dismiss];
    [picker autorelease];
  }
  -(void)peerPickerControllerDidCancel:(GKPeerPickerController *)pk {
    picker.delegate = nil;
    [picker autorelease];
    [self.navigationController popViewControllerAnimated:YES];
  }
  // FAIL
  - (void)session:(GKSession *)session didFailWithError:(NSError *)error {
    NSLog(@"error : %@", [error description]);
  }
  // SESSION VIND ANDERE SESSION -> CONNECT
  -(void)session:(GKSession *)session peer:(NSString *)peerID didChangeState:(GKPeerConnectionState)state {
    switch (state) {
      case GKPeerStateConnected:
        NSLog(@"connect met peer %@", [currentSession displayNameForPeer:peerID]);
        [self generateRandomNumberAndSendIt];
        break;
      case GKPeerStateDisconnected:
        NSLog(@"disconnected");
        [self.currentSession disconnectFromAllPeers];
        currentSession = nil;
        [self.navigationController popViewControllerAnimated:YES];
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Whoopsie" message:@"The connection failed" delegate:nil cancelButtonTitle:@"Okido" otherButtonTitles:nil];
        [alert show];
        [alert release];
        [super viewDidDisappear:YES];
        break;
      }
    }

有时，当我接受传入请求时，选择器会在一台设备上删除自身，而在另一台设备上我会收到错误:wait_fences:无法接收回复:10004003。我认为这与alertview本身有关。我在此 View 中设置了其他警报 View 。

希望大家能够帮助我。

提前致谢。

Answer 1

你需要设置一些断点并调试代码崩溃的地方，任何人都不可能确定你的代码在哪里崩溃，我们能做的最好的就是通过指出代码中的奇怪之处来猜测。该错误甚至可能不在您提供的代码中。

正如其他人提到的，您绝对不应该在非 viewDidAppear: 方法中使用语句 [super viewDidDisappear:YES]; 。

我还猜测，如果您正在调试，那么控制台中会出现比 wait_fences: failed to receive reply: 10004003 更有用的错误消息。确保您已对所有异常启用断点。如果您不知道该怎么做，here are some instructions 。单步调试异常，找出它在哪一行，并找出抛出的错误。

你的[picker autorelease];调用也有点奇怪。如果您想自动释放选择器，只需执行 picker = [[[GKPeerPickerController alloc] init] autorelease]; 即可。将 autorelease 语句放在 GameKit 委托(delegate)方法中很奇怪。