與UIModalTransitionStyleCrossDissolve的過渡顯示在iOS SDK中的iPhone6s錯誤9.3

Question

我正在使用以下方式在兩個視圖控制器之間進行模態轉換，我試圖淡入使用UIModalTransitionStyleCrossDissolve，但它顯示iphone-4S中的警告和Iphone中的錯誤6S，我也header.Can任何人進口的UIKit給我關於這個錯誤的線索我在做什麼

BoookingVC* nextController=[self.storyboard instantiateViewControllerWithIdentifier:@"BoookingVCID"]; 
nextController.userId=userId; 
nextController.customerId=customerId; 


nextController.providesPresentationContextTransitionStyle = YES; 
nextController.definesPresentationContext = YES; 

nextController.modalTransitionStyle = UIModalTransitionStyleCrossDissolve; 
[nextController setModalPresentationStyle:UIModalPresentationOverCurrentContext]; 
[self.navigationController presentViewController:nextController animated:YES completion:nil]; 

出現下面的警告，我不能夠understand-「Ambigous利用內部申報」

Answer 1

我想你應該不得不用你的故事板名稱正確地創建UIStoryboard對象。

個

UIStoryboard *StoryboardObj = [UIStoryboard storyboardWithName:@"yourStoryboardName" bundle:nil]; 
BoookingVC* nextController=[StoryboardObj instantiateViewControllerWithIdentifier:@"BoookingVCID"];