![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
![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/veO49.png)
Main Thread Checker: UI API called on a background thread: -[UIApplication applicationState] - Stack Overflow
![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)
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
SOLVED: Day 39: Course code throws warning "-[UINavigationController tabBarItem] must be used from main thread only" – 100 Days of Swift – Hacking with Swift forums
![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
![🍏 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
![Cocoa Fundamentals Guide by 0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789 - issuu Cocoa Fundamentals Guide by 0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789 - issuu](https://image.isu.pub/090527150320-2fd242764aed4a7fb85f85d82044b837/jpg/page_1.jpg)
Cocoa Fundamentals Guide by 0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789 - issuu
![iOS] main thread problem: Remind Main Thread Checker: UI API called on a background thread - Programmer Sought iOS] main thread problem: Remind Main Thread Checker: UI API called on a background thread - Programmer Sought](https://www.programmersought.com/thumbs/650/429f2f2297fe769bcb175385b4571f6a.png)
iOS] main thread problem: Remind Main Thread Checker: UI API called on a background thread - Programmer Sought
![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)