CODEWITHSUNDEEP
iosobjective-ciphonexcodeuiviewcontroller
Madan gupta
Madan gupta

Reputation: 668

Unable to Navigate From UIViewController to UICollectionViewController

I am working with UICollectionViewController. When I navigate from a UIViewController to a UICollectionViewController by using UINavigationController an exception occurred with message:

Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'UICollectionView must be initialized with a non-nil layout parameter.

I don't know why this happened.

I am using a simple UICollectionViewController without any coding (i.e. by default created file). Its file name is 'NewCollectionViewController.m' & 'NewCollectionViewController.h'.

My Xcode version is 6.1.1.

My navigation code is:

NewCollectionViewController *CVController = [[NewCollectionViewController alloc] init];
[self.navigationController pushViewController:CVController animated:YES];

I just want to navigate from UIViewController to UICollectionViewController.

Upvotes: 2

Views: 174

Answers (4)

vicky
vicky

Reputation: 13

Create UICollectionViewCell class and UICollectionViewFlowLayout class and add them to your UICollectionViewController class.

Upvotes: 0

Vineesh TP
Vineesh TP

Reputation: 7973

Check The root View having NavigationController and make sure storyBoard Identifier set.

NewCollectionViewController *CVController = (NewCollectionViewController *)[self.storyboard instantiateViewControllerWithIdentifier:@"StoryBordIdentifier"]
[self.navigationController pushViewController:CVController animated:YES];

Push to new ViewController

Upvotes: 1

Mahesh
Mahesh

Reputation: 996

you have to add [self.collectionView registerClass:[UICollectionView class] forCellWithReuseIdentifier:@"MyCell"];

in NewCollectionViewController class

Upvotes: 0

dopcn
dopcn

Reputation: 4218

I guess it's the first time you play with UICollectionViewController.

Just as the exception reason said UICollectionView must be initialized with a non-nil layout parameter. The proper init method of UICollectionViewController is 

 - (instancetype)initWithCollectionViewLayout:(UICollectionViewLayout *)layout

Upvotes: 1

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