![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](https://i.stack.imgur.com/lazOo.png)
Main Thread Checker: UI API called on a background thread: -[UIApplication applicationState] - Stack Overflow
![UIView setHidden:] must be used from main thread only · Issue #46 · gang544043963/LGPhotoBrowser · GitHub UIView setHidden:] must be used from main thread only · Issue #46 · gang544043963/LGPhotoBrowser · GitHub](https://user-images.githubusercontent.com/13481443/39958918-6391ef76-563c-11e8-92e0-ec35bbea24e8.png)
UIView setHidden:] must be used from main thread only · Issue #46 · gang544043963/LGPhotoBrowser · GitHub
![runtime: UI API called from background thread: -[UIApplication applicationState] must be used from main thread only - Stack Overflow runtime: UI API called from background thread: -[UIApplication applicationState] must be used from main thread only - Stack Overflow](https://i.stack.imgur.com/fB8FR.png)
runtime: UI API called from background thread: -[UIApplication applicationState] must be used from main thread only - Stack Overflow
![Rendering a card on a background thread triggers the Main Thread Checker · Issue #2181 · microsoft/AdaptiveCards · GitHub Rendering a card on a background thread triggers the Main Thread Checker · Issue #2181 · microsoft/AdaptiveCards · GitHub](https://user-images.githubusercontent.com/13140302/48740410-61968680-ec25-11e8-8d55-443841c2f7b9.png)
Rendering a card on a background thread triggers the Main Thread Checker · Issue #2181 · microsoft/AdaptiveCards · GitHub
![background thread: -[UIView subviews] must be used from main thread only · Issue #184 · CoderZhuXH/XHLaunchAd · GitHub background thread: -[UIView subviews] must be used from main thread only · Issue #184 · CoderZhuXH/XHLaunchAd · GitHub](https://user-images.githubusercontent.com/27879437/60232551-83e53680-98cf-11e9-9486-9711a4d0f275.png)
background thread: -[UIView subviews] must be used from main thread only · Issue #184 · CoderZhuXH/XHLaunchAd · GitHub
![已解决】Xcode9编译项目出错:Terminating app due to uncaught exception NSInternalInconsistencyException reason Only run on the main thread – 在路上 已解决】Xcode9编译项目出错:Terminating app due to uncaught exception NSInternalInconsistencyException reason Only run on the main thread – 在路上](https://www.crifan.com/files/pic/uploads/2018/07/e718a8e2da0a8551c63e19a62f36baa4.png)
已解决】Xcode9编译项目出错:Terminating app due to uncaught exception NSInternalInconsistencyException reason Only run on the main thread – 在路上
![UIView setHidden:] must be used from main thread only · Issue #46 · gang544043963/LGPhotoBrowser · GitHub UIView setHidden:] must be used from main thread only · Issue #46 · gang544043963/LGPhotoBrowser · GitHub](https://user-images.githubusercontent.com/13481443/39958928-712f93ea-563c-11e8-9630-e5e7b07a4e81.png)
UIView setHidden:] must be used from main thread only · Issue #46 · gang544043963/LGPhotoBrowser · GitHub
![🍏 Thread 8: -[UIImagePickerController init] must be used from main thread only · Issue #1301 · react-native-image-picker/react-native-image-picker · GitHub 🍏 Thread 8: -[UIImagePickerController init] must be used from main thread only · Issue #1301 · react-native-image-picker/react-native-image-picker · GitHub](https://user-images.githubusercontent.com/20848327/75134724-6c20b500-56df-11ea-8c91-e83f3198ff91.png)
🍏 Thread 8: -[UIImagePickerController init] must be used from main thread only · Issue #1301 · react-native-image-picker/react-native-image-picker · GitHub
![Xcode 9 的Main Thread Checker. 開發iOS App 時,有些事情,我們一定得在main thread… | by 彼得潘的iOS App Neverland | 彼得潘的Swift iOS App 開發問題解答集 Xcode 9 的Main Thread Checker. 開發iOS App 時,有些事情,我們一定得在main thread… | by 彼得潘的iOS App Neverland | 彼得潘的Swift iOS App 開發問題解答集](https://miro.medium.com/max/3544/1*YGRpSH_CvFTsklBUvxgOtg.jpeg)
Xcode 9 的Main Thread Checker. 開發iOS App 時,有些事情,我們一定得在main thread… | by 彼得潘的iOS App Neverland | 彼得潘的Swift iOS App 開發問題解答集
![已解决】Xcode9编译项目出错:Terminating app due to uncaught exception NSInternalInconsistencyException reason Only run on the main thread – 在路上 已解决】Xcode9编译项目出错:Terminating app due to uncaught exception NSInternalInconsistencyException reason Only run on the main thread – 在路上](https://www.crifan.com/files/pic/uploads/2018/07/ce5bcaf9782cdd3f5162e281835e8e14.png)