ios - 多点连接 : Invalid service type

Question

我正在尝试使用 Multipeer Connectivity 框架，但在尝试使用名为“stc-classroom-vik”的 serviceType 实例化 MCNearbyServiceBrowser 时发生崩溃。

代码如下:

private func setUpSession() {
    self.session = MCSession(peer: self.peerId);
    self.session!.delegate = self;
    
    self.browser = MCNearbyServiceBrowser(peer: self.peerId, serviceType: "stc-classroom-vik");
    self.browser!.delegate =  self;
    
    self.advertiser = MCNearbyServiceAdvertiser(peer: self.peerId, discoveryInfo: nil, serviceType: "stc-classroom-vik");
    self.advertiser!.delegate = self;
}

这是我遇到的崩溃/错误:

2014-08-15 12:24:42.689 Xavier[614:254319] *** Terminating app due to uncaught exception     'NSInvalidArgumentException', reason: 'Invalid serviceType passed to MCNearbyServiceBrowser'

如果有任何帮助，我将不胜感激。

Answer 1

我相信您只能在 serviceType 参数字符串中使用一个连字符，并且不能超过 15 个字符。你的有两个连字符和 17 个字符。

来自 MCNearbyServiceBrowser() 的评论:

The serviceType parameter is a short text string used to describe the app's networking protocol. It should be in the same format as a Bonjour service type: up to 15 characters long and valid characters include ASCII lowercase letters, numbers, and the hyphen. A short name that distinguishes itself from unrelated services is recommended; for example, a text chat app made by ABC company could use the service type "abc-txtchat".