objective-c - ios生命周期中的事件循环是什么，它的用法和作用是什么？

Question

我需要知道ios生命周期中的事件循环是做什么的？。有人可以就此向我提出建议吗？？

Answer 1

最佳答案可能是 Apple 在 Cocoa Application Competencies for iOS 的“主事件循环”部分提供的答案。文档。

In the main event loop, an application continuously routes incoming events to objects for handling and, as a result of that handling, updates its appearance and state. An event loop is simply a run loop: an event-processing loop for scheduling work and coordinating the receipt of events from various input sources attached to the run loop. Every thread has access to a run loop. In all but the main thread, the run loop must be configured and run manually by your code. In Cocoa applications, the run loop for the main thread—the main event loop—is run automatically by the application object. What distinguishes the main event loop is that its primary input source receives events from the operating system that are generated by user actions—for example, tapping a view or entering text using a keyboard.

顺便说一下，如果您是 iOS 开发的新手，我真的推荐阅读这篇文档，因为它会回答您可能遇到的很多问题。