UICollectionView recieved layout attributes for a cell with an index path that does not exist

Question

I have used UICollection view to show items in grid layout.

For data source I have use 5*5 dimensional array.

And also I am returning 5 for numberOfItems in

Answer 1

Just in case others find this question with Google - I received the same error with a very interesting index path:

'NSInternalInconsistencyException', reason: 'UICollectionView received layout attributes for a cell with an index path that does not exist: {length = 2, path = 0 - 0}'

I had simply forgotten to connect the collection view's data source and delegate to the view controller in Interface Builder. D'oh!

Answer 2

It works for me.

    collectionView.reloadData()
    collectionView.collectionViewLayout.invalidateLayout()

It comes because of the cache of the Cell's Autolayout when reloadData.

Answer 3

The MultipleLineLayout was originally written for infinite scrolling, so there was a problem with that implementation for your use. It should look like this,

-(NSArray*)layoutAttributesForElementsInRect:(CGRect)rect {

    NSMutableArray* attributes = [NSMutableArray array];
    for(NSInteger i=0 ; i < self.collectionView.numberOfSections; i++) {
        for (NSInteger j=0 ; j < [self.collectionView numberOfItemsInSection:i]; j++) {
            NSIndexPath* indexPath = [NSIndexPath indexPathForItem:j inSection:i];
            [attributes addObject:[self layoutAttributesForItemAtIndexPath:indexPath]];
        }
    }
    return attributes;
}