How can I add a multi-line title to my UINavigationBar with different formats? i.e. i'm making a XMPP client in iOS to chat with Facebook and i want to show in my chat room the friends name and if is typing or not in UINavigationBar. However, I want to show this information with different formats (name bigger than isTyping notification).How can I add a multi-line title to my UINaviga
阅读背景：
多线标题UINavigationBar，格式不同。
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