/////////////////-(id)init{ self = [super init]; if (self) { _peerID = nil; _session = nil; _browser = nil; _advertiser = nil; } return self; }-(void)setupPeerAndSessionWithDisplayName:(NSString *)displayName{ self.peerID = [[MCPeerID alloc] initWithDisplayName:displayName]; self.session = [[MCSession alloc] initWithPeer:self.peerID]; self.session.delegate = self; }-(void)setupMCBrowser{ self.browser = [[MCBrowserViewController alloc] initWithServiceType:@"game-stuff" session:_session];}-(void)advertiseSelf:(BOOL)shouldAdvertise{ if(shouldAdvertise) { self.advertiser = [[MCAdvertiserAssistant alloc] initWithServiceType:@"game-stuff" discoveryInfo:nil session:self.session]; [self.advertiser start]; } else{ [self.advertiser stop]; _advertiser = nil; } }-(void)browser:(MCNearbyServiceBrowser *)browser foundPeer:(nonnull MCPeerID *)peerID withDiscoveryInfo:(nullable NSDictionary<NSString *,NSString *> *)info{ }- (void)session:(MCSession *)session peer:(MCPeerID *)peerID didChangeState:(MCSessionState)state { NSDictionary *dict = @{@"peerID":peerID, @"state" : @(state)};//[NSNumber numberWithDouble:state]}; [[NSNotificationCenter defaultCenter] postNotificationName:@"MCDidChangeStateNotification" object:nil userInfo:dict]; }