UICollectionView doesn't contain UICollectionViewCell in IB
interface-builder, ios6, uicollectionview, xcode
Solution
I can't tell you why it does not work, but for me the subclass approach from this blog post solved the problem:
http://www.adoptioncurve.net/archives/2012/09/a-simple-uicollectionview-tutorial.php
here is a short summary:
- create a new class MyViewCell which extends UICollectionViewCell and create properties, actions, outlets and methods as needed.
`@interface MyViewCell : UICollectionViewCell`
- create a View (xib file) with a Collection View Cell as its root object (and delete the object which is created by default).
- in the attributes set the custom class of this Collection View Cell to your extended class MyViewCell (instead of the default UICollectionViewCell).
- in the attributes under Collection Reusable View define an Identifier, e.g. myCell, you will need this later to register your call.
go back to your custom class and modify the inithWithFrame method to load and use your created view.
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self)
{
// Initialization code
NSArray *arrayOfViews = [[NSBundle mainBundle] loadNibNamed:@"CVCell" owner:self options:nil];
if ([arrayOfViews count] < 1) { return nil; }
if (![[arrayOfViews objectAtIndex:0] isKindOfClass:[UICollectionViewCell class]]) { return nil; }
self = [arrayOfViews objectAtIndex:0];
}
return self;
}
then you can register this class to be used by the collectionView with
`[self.collectionView registerClass:[MyViewCell class] forCellWithReuseIdentifier:@"myCell"];`
Problem
I'm trying to add a UICollectionView to a .nib file in IB. I've worked through a few tutorials and had no problems. In my existing app, when I drag a collection view into a view in IB and then expand the object, the CollectionView Flow Layout is there , but there is no collection view cell. I also cannot drag and drop a cell into the collection view. Also the collection view is displayed differently, showing an image of a grid of cells instead of the normal white box. I've tried creating a new view controller with nib, and have the same results when adding a collectionView. This app WAS targeting iOS 4.2, but I've changed the deployment target to iOS 6. In any newly created projects I don't get this behavior.