iOS UICollectionView UICollectionView - Datasource
Example
Every collection view must have a Datasource object. The Datasource object is the content that your app will display within the UICollectionView. At a minimum, all Datasource objects must implement the collectionView:numberOfItemsInSection: and collectionView:cellForItemAtIndexPath: methods.
Required Methods
Swift
func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
// Return how many items in section
let sectionArray = _data[section]
return sectionArray.count
}
func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCellWithReuseIdentifier(MyCellID)
// If you use a custom cell class then cast the cell returned, like:
// as! MyCollectionViewCellClass
// or you will have errors when you try to use features of that class.
//Customize your cell here, default UICollectionViewCells do not contain any inherent
//text or image views (like UITableView), but some could be added,
//or a custom UICollectionViewCell sub-class could be used
return cell
}
Objective C
- (NSInteger)collectionView:(UICollectionView*)collectionView numberOfItemsInSection:(NSInteger)section {
// Return how many items in section
NSArray *sectionArray = [_data objectAtIndex:section];
return [sectionArray count];
}
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView
cellForItemAtIndexPath:(NSIndexPath *)indexPath {
// Return a cell
UICollectionViewCell *newCell = [self.collectionView
dequeueReusableCellWithReuseIdentifier:MyCellID
forIndexPath:indexPath];
//Customize your cell here, default UICollectionViewCells do not contain any inherent
//text or image views (like UITableView), but some could be added,
//or a custom UICollectionViewCell sub-class could be used
return newCell;
}
