ios – 应用程序试图在目标“当前视图控制器”上显示一个零模态视图控制器

我有一个带有xib的UIViewController,当我尝试在其上呈现一个storyboard视图时,它会崩溃.

我用它来呈现它

UIViewController * buddiesOrFacebook = [self.storyboard   instantiateViewControllerWithIdentifier:@"BuddiesFBFriends"] ;
 [self presentViewController:buddiesOrFacebook animated:YES completion:nil];

解决方法

检查这些事情

>检查viewcontroller的标识符,如果它与storyboard中提到的相同
>确保您的好友或朋友书不是零.在该行上设置断点,在底部的调试区域上查看对象是否为nil.如果它是零则问题在于故事板连接
>如果您当前的viewcontroller未从storyboard启动,那么获取如下的storyboard对象：

UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil];
UIViewController * buddiesOrFacebook = [storyboard   instantiateViewControllerWithIdentifier:@"BuddiesFBFriends"] ;
[self presentViewController:buddiesOrFacebook animated:YES completion:nil];

Swift更新：

let storyboard = UIStoryboard(name: "MainStoryboard",bundle: nil)
var buddiesOrFacebook = storyboard.instantiateViewControllerWithIdentifier("BuddiesFBFriends")
self.presentViewController(myViewController,animated: true,completion: nil)