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Supplementary nodes must be added to the completed nodes after their measurement completes following individual section reloads.

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This commit is contained in:
Scott Goodson 2015-12-27 15:34:26 -08:00
parent f87b915162
commit 690f90a899
2 changed files with 21 additions and 6 deletions
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21
AsyncDisplayKit/Details/ASCollectionDataController.mm
View File

@ -10,7 +10,7 @@
#import "ASAssert.h"
#import "ASMultidimensionalArrayUtils.h"
#import "ASDisplayNode.h"
#import "ASCellNode.h"
#import "ASDisplayNodeInternal.h"
#import "ASDataController+Subclasses.h"
@ -142,7 +142,9 @@
NSArray *indexPaths = ASIndexPathsForMultidimensionalArrayAtIndexSet([self editingNodesOfKind:kind], sections);
[self deleteNodesOfKind:kind atIndexPaths:indexPaths completion:nil];
// reinsert the elements
[self batchLayoutNodes:nodes ofKind:kind atIndexPaths:_pendingIndexPaths[kind] completion:nil];
[self batchLayoutNodes:nodes ofKind:kind atIndexPaths:_pendingIndexPaths[kind] completion:^(NSArray *nodes, NSArray *indexPaths) {
[self insertNodes:nodes ofKind:kind atIndexPaths:indexPaths completion:nil];
}];
[_pendingNodes removeObjectForKey:kind];
[_pendingIndexPaths removeObjectForKey:kind];
}];
@ -187,7 +189,8 @@
for (NSUInteger i = 0; i < rowNum; i++) {
NSIndexPath *indexPath = [sectionIndex indexPathByAddingIndex:i];
[indexPaths addObject:indexPath];
[nodes addObject:[self.collectionDataSource dataController:self supplementaryNodeOfKind:kind atIndexPath:indexPath]];
ASCellNode *supplementaryNode = [self.collectionDataSource dataController:self supplementaryNodeOfKind:kind atIndexPath:indexPath];
[nodes addObject:supplementaryNode];
}
}];
}
@ -208,7 +211,17 @@
- (ASCellNode *)supplementaryNodeOfKind:(NSString *)kind atIndexPath:(NSIndexPath *)indexPath
{
ASDisplayNodeAssertMainThread();
return [self completedNodesOfKind:kind][indexPath.section][indexPath.item];
NSArray *nodesOfKind = [self completedNodesOfKind:kind];
NSInteger section = indexPath.section;
if (section < nodesOfKind.count) {
NSArray *nodesOfKindInSection = nodesOfKind[section];
NSInteger itemIndex = indexPath.item;
if (itemIndex < nodesOfKindInSection.count) {
return nodesOfKindInSection[itemIndex];
}
}
ASDisplayNodeAssert(NO, @"Supplementary node should exist. Kind = %@, indexPath = %@, collectionDataSource = %@", kind, indexPath, self.collectionDataSource);
return [[ASCellNode alloc] init];
}
#pragma mark - Private Helpers

6
examples/CustomCollectionView/Sample/ViewController.m
View File

@ -101,11 +101,13 @@ static NSUInteger kNumberOfImages = 14;
return [[SupplementaryNode alloc] initWithText:text];
}
- (NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView {
- (NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView
{
return _sections.count;
}
- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section {
- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section
{
return [_sections[section] count];
}