adamwaite / selfsizingwaterfallcollectionviewlayout Goto Github PK

When i use two different cell for my collection view with SelfSizingWaterfallCollectionViewLayout i reload data after network call then some time app freeze and shows CPU usages 100%.

The example project does not behave shown in the GIF in this respect!

In My case, i have used layoutIfNeeded function in my view and when i tried to load celled, prepareLayout function of SelfSizingWaterfallCollectionViewLayout called continue and app freeze and crash after some time.

Can you help, How can i solve it?

I'm using AWPagedArray in conjunction with SelfSizingWaterfallCollectionViewLayout. Whenever a network request comes back with a page of data, I want to invalidate only those cells. Reason being, if I just invalidate the whole layout, I experience noticeable lag, disrupting the smooth scrolling experience I was aiming to achieve.

- (UICollectionViewLayoutInvalidationContext *)invalidationContextForPreferredLayoutAttributes:(UICollectionViewLayoutAttributes *)preferredAttributes withOriginalAttributes:(UICollectionViewLayoutAttributes *)originalAttributes
{
    UICollectionViewLayoutInvalidationContext *context = [super invalidationContextForPreferredLayoutAttributes:preferredAttributes withOriginalAttributes:originalAttributes];
    [context invalidateEverything];
    return context;
}