Question

我在列表中看不到广告客户。我在设备和模拟器上运行此代码，你知道为什么吗？

enter image description here

以下是添加到主viewcontroller的所有代码。我正在使用nshipser multipeer connectivity教程：

- (void)viewDidAppear:(BOOL)animated
{
    [super viewDidAppear:animated];

    static NSString * const XXServiceType = @"xx-service";
    localPeerID = [[MCPeerID alloc] initWithDisplayName:[[UIDevice currentDevice] name]];

    MCNearbyServiceAdvertiser *advertiser =
    [[MCNearbyServiceAdvertiser alloc] initWithPeer:localPeerID
                                      discoveryInfo:nil
                                        serviceType:XXServiceType];
    advertiser.delegate = self;
    [advertiser startAdvertisingPeer];

    MCSession *session = [[MCSession alloc] initWithPeer:localPeerID
                                        securityIdentity:nil
                                    encryptionPreference:MCEncryptionNone];
    session.delegate = self;

    MCNearbyServiceBrowser *browser = [[MCNearbyServiceBrowser alloc] initWithPeer:localPeerID serviceType:XXServiceType];
    browser.delegate = self;

    MCBrowserViewController *browserViewController =
    [[MCBrowserViewController alloc] initWithBrowser:browser
                                             session:session];
    browserViewController.view.backgroundColor = [UIColor redColor];
    browserViewController.delegate = self;

    self.modalPresentationStyle = UIModalPresentationFullScreen;

    [self presentViewController:browserViewController animated:YES completion:
     ^{
         [browser startBrowsingForPeers];
     }];
}

- (void)advertiser:(MCNearbyServiceAdvertiser *)advertiser didReceiveInvitationFromPeer:(MCPeerID *)peerID withContext:(NSData *)context invitationHandler:(void(^)(BOOL accept, MCSession *session))invitationHandler
{
    UIAlertView *av = [[UIAlertView alloc] initWithTitle:@"didReceiveInvitationFromPeer get called" message:nil delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles:nil, nil];
    [av show];

    if ([self.mutableBlockedPeers containsObject:peerID]) {
        invitationHandler(NO, nil);
        return;
    }

    [self.mutableBlockedPeers addObject:peerID];


    MCSession *session = [[MCSession alloc] initWithPeer:localPeerID
                                        securityIdentity:nil
                                    encryptionPreference:MCEncryptionNone];
    session.delegate = self;

    invitationHandler(YES, session);
}

Answer 1

您的代码存在两个主要问题。

首先，您没有对广告客户有任何强烈的引用，因此一旦viewDidAppear完成，它将被解除分配（从而广告停止）。

因此，请确保向视图控制器添加属性并将广告商存储在其中：

@interface ViewController()<MCNearbyServiceAdvertiserDelegate, etc>
@property(nonatomic, strong) MCNearbyServiceAdvertiser *advertiser;
@end

...

- (void)viewDidAppear:(BOOL)animated {
    ... create the advertiser, etc
    self.advertiser = advertiser
    ... etc
}

第二个问题源于您创建和使用浏览器对象。

来自Apple的MCBrowserViewController课程文档：

重要提示：如果您希望浏览器视图控制器管理浏览过程，则浏览器对象不得主动浏览，其委托必须为零。

因此，删除显示browser.delegate = self 的行，并删除包含[browser startBrowsingForPeers]的代码块（代之以传递nil），因为浏览器视图控制器会为您执行此操作。< / p>

或者，甚至不要直接创建浏览器对象，而是让浏览器视图控制器使用其他init方法代替它：

MCBrowserViewController *browserViewController = [[MCBrowserViewController alloc] initWithServiceType:XXServiceType session:session];

我在列表中看不到广告商（多重连接），为什么？

1 个答案: