UIalertView不调用uialertView：clickedButtonAtIndex

Question

我有一个名为MatchmakingServer的类有如下方法：

- (void)session:(GKSession *)session peer:(NSString *)peerID didChangeState:(GKPeerConnectionState)state

{

switch (state)
{
    case GKPeerStateAvailable:
        break;

    case GKPeerStateUnavailable:
        break;

        // A new client has connected to the server.
    case GKPeerStateConnected:
        if (_serverState == ServerStateAcceptingConnections)
        {
            if (![_connectedClients containsObject:peerID])
            {
                NSString *peerID2 =[self displayNameForPeerID:peerID];
                self.PeerId=peerID;
                UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Oops:("
                                                                message:[NSString stringWithFormat:@"%@:%@ %@",@"device",peerID2,@"want to join your session"]
                                                               delegate:self
                                                      cancelButtonTitle:@"NO"
                                                      otherButtonTitles:nil];


                [_connectedClients addObject:peerID];
                NSLog(@"the orginal peerID %@",peerID);
                [self.delegate matchmakingServer:self clientDidConnect:peerID];
            }
        }

也

@interface MatchmakingServer : NSObject <GKSessionDelegate,UIAlertViewDelegate>

任何想法为什么alertView不会调用clickedButtonAtIndex

Answer 1

您没有在屏幕上显示警报视图，您只是在初始化它。插入

[alert show];

在初始化代码之后你应该没问题。

Answer 2

您需要在[alert show];文件中调用UIAlertViewDelegate方法并采用UIViewController.h。