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李二狗 — @Meniny
Published 12:04 Apr 09, 2012.
Created by @ezra. Categorized in #Programming, and tagged as #iOS.
Source format: Markdown
保证程序不退出
监听所有事件，手势触摸、时钟触发、网络加载数据完成
没有事件时回休眠(省电)，一旦监听到事件会会响应
程序启动后会创建RunLoop，每一个线程都有一个RunLoop，但只有主线程的RunLoop会启动
按钮点击事件是如何响应的？
addTarget只是注册(给RunLoop)点击按钮后执行控制器的click方法| Application | ⬇️ |
|---|---|
| runloop | ⬇️ |
| Window | ⬇️ |
| ViewController | ⬇️ |
| View | ⬇️ |
| Button | ⬇️ |
View More
