编程最怕的就是有盲点,不确定,而runloop官网对其提及的又很少:那么看完这篇应该使你有底气很多~ RunLoop整体介绍 An event-processing loop, during which events are received and dispatched to appropriate handlers. 事件运行循环:就类似下面的while循环部分,当然要复杂很多,可以把它抽象成如下代码: main() { initialize(); do { message = get_ne…