Finish reading Runloop
Xcode/Swift】紫の警告の対応方法：UIApplication.registerForRemoteNotifications() must be used from main thread only
The real importance
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![Main Thread Checker: UI API called on a background thread: -[UIApplication applicationState] - Stack Overflow](https://i.stack.imgur.com/teE1e.png "Main Thread Checker: UI API called on a background thread: -[UIApplication applicationState] - Stack Overflow")
Main Thread Checker: UI API called on a background thread: -[UIApplication applicationState] - Stack Overflow
Bowling gemäß Ale uiswitch.on must be used from main thread only Onkel oder Herr Zeitung Tablett
Swift Error "UIButton.currentTitle must be used from main thread only" - Stack Overflow
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![iOS] UI API called from background thread Group · Issue #4505 · mattermost/mattermost-mobile · GitHub](https://avatars.githubusercontent.com/u/211855?s=88&v=4 "iOS] UI API called from background thread Group · Issue #4505 · mattermost/mattermost-mobile · GitHub")
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Introduction to Multithreading and DispatchQueue
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IOS bottom layer] main thread & main runloop - 编程知识
iOS must be used from main thread only · Issue #4447 · bilibili/ijkplayer · GitHub
Re-Engineering UISwitch. From time to time I browse Dribbble to… | by Nathan Tannar | Prototypr
Xcode/Swift】紫の警告の対応方法：UIApplication.registerForRemoteNotifications() must be used from main thread only
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Xcode UIView.init(frame:) must be used from main thread only - Stack Overflow
画面遷移時にMain Thread Checkerのエラーが出た時の対処法(Swift) - Qiita
![Main Thread Checker: UI API called on a background thread: -[UIApplication applicationState] - Stack Overflow](https://i.stack.imgur.com/lazOo.png "Main Thread Checker: UI API called on a background thread: -[UIApplication applicationState] - Stack Overflow")
Main Thread Checker: UI API called on a background thread: -[UIApplication applicationState] - Stack Overflow
