iOSProblemRecord

1. iOS 自定义Present转场动画，Dismiss后黑屏 来源
   问题修复：
   

   -(void)animateTransition:(id<UIViewControllerContextTransitioning>)transitionContext{ 
   ...
   
   if (fromVC.modalPresentationStyle == UIModalPresentationFullScreen) {
       [containerView addSubview:toVC.view];
   }
   ...
   
   }
   

2. xcode 11.4 building for ios simulator, but the linked and embedded framework was built for ios 来源
   问题修复：
   

   Under Build Settings - Navigate to Validate Workspace - Change it to YES (By Default its NO)