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[ASTableView / ASCollectionView] Improve assertion messages if necessary data source methods are not implemented (#2269)

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* Improve assertion message if tableView:nodeBlockForRowAtIndexPath: or tableView:nodeForRowAtIndexPath: is not implemented

* Improve assertion message if collectionView:nodeForItemAtIndexPath: or collectionView:nodeBlockForItemAtIndexPath: is not implemented
This commit is contained in:
Michael Schneider
2016-09-22 13:35:04 -07:00
committed by GitHub
parent 8427083ddb
commit 9f1a387ba0
4 changed files with 30 additions and 4 deletions
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4
AsyncDisplayKit/ASCollectionView.mm
View File

@@ -355,8 +355,8 @@ static NSString * const kCellReuseIdentifier = @"_ASCollectionViewCell";
_asyncDataSourceFlags.asyncDataSourceNodeBlockForItemAtIndexPath = [_asyncDataSource respondsToSelector:@selector(collectionView:nodeBlockForItemAtIndexPath:)];
_asyncDataSourceFlags.asyncDataSourceNumberOfSectionsInCollectionView = [_asyncDataSource respondsToSelector:@selector(numberOfSectionsInCollectionView:)];
// Data-source must implement collectionView:nodeForItemAtIndexPath: or collectionView:nodeBlockForItemAtIndexPath:
ASDisplayNodeAssertTrue(_asyncDataSourceFlags.asyncDataSourceNodeBlockForItemAtIndexPath || _asyncDataSourceFlags.asyncDataSourceNodeForItemAtIndexPath);
ASDisplayNodeAssert(_asyncDataSourceFlags.asyncDataSourceNodeBlockForItemAtIndexPath
|| _asyncDataSourceFlags.asyncDataSourceNodeForItemAtIndexPath, @"Data source must implement collectionView:nodeForItemAtIndexPath: or collectionView:nodeBlockForItemAtIndexPath:");
}
super.dataSource = (id<UICollectionViewDataSource>)_proxyDataSource;