无法从UICollectionReusableView中分离

Question

我有UICollectionView和Header.I，我有textfield和image.I，我尝试过推送工作fine.But，我需要调用segue！任何帮助都将不胜感激。

Header.h

@interface HeaderRV : UICollectionReusableView
@property (weak, nonatomic) IBOutlet UITextField *searchField;
@property (weak, nonatomic) IBOutlet UILabel *titleLabel;
- (IBAction)backButton:(id)sender;


@end

Header.m

@implementation HeaderRV

- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
    // Initialization code
}
return self;
}
- (IBAction)backButton:(id)sender {

if ([self.searchField isEditing]) {
    [self.searchField resignFirstResponder];
}
else{
    //segue need to be here
}

}

@end

Answer 1

我和你有同样的问题。这实际上相当棘手，因为您可以在一个空项目中完美地完成“在collectionHeaderView中执行segue”(我尝试过)。我发现这个问题的关键是，您的导航控制器的RootVC不是应用程序的初始VC。

您可以通过在您的.m文件中添加显示导航控制器的rootVC的以下行来解决这一问题。

- (IBAction)next:(id)sender {
[theRootVCinNavigationController] *vc = [self.storyboard instantiateViewControllerWithIdentifier:@"[your identifier]"];
UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:[theRootVCinNavigationController]];
[self presentViewController:navigationController animated:YES completion:nil];
}

参考文献：

1. How to add an UINavigationController to an UIViewController presented as Modal

1. https://developer.apple.com/Library/ios/documentation/WindowsViews/Conceptual/ViewControllerCatalog/Chapters/NavigationControllers.html (搜索“创建导航界面”)