WeChat Client Technology Team
Nov 19, 2015 · Mobile Development
Unlocking iOS Event Handling & Rendering: RunLoop, UI Threads, and Core Animation
This article explains iOS’s event processing pipeline—from hardware events through the RunLoop’s observer, source, timer, and dispatch mechanisms—detailing why UI must run on the main thread, how CALayer and Core Animation render, and the roles of CADisplayLink, NSTimer, and async display techniques.
AsyncDisplayCADisplayLinkCore Animation
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