Qun Li questions

Qun Li answers

• I get "xcrun: error: SDK "iphonesimulator" cannot be located" when running the toolchain
• Can't set titleView in the center of navigation bar because back button
• Crash in actionForLayer:forKey:
• iOS App Rejected : non-public APIs
• iOS: WebKitLegacy crashes
• Cocoapods frameworks.sh error: no such file
• NSInternalInconsistencyException: webView:decidePolicyForNavigationAction:decisionHandler was not called
• Is it ok to create a UIView on a background thread?
• Proper key format for objc_setAssociatedObject()