Build your first provider
A provider is anything that implements AnyCollectionProvider. The simpliest way to build a provider is by using CollectionProvider class. Here is what you need to build a basic provider:
let provider = CollectionProvider(
data: [1, 2, 3, 4], // provide an array of data, data can be any type
viewUpdater: { (label: UILabel, index: Int, data: Int) in
// update your view according to your data, view can be any subclass of UIView
label.backgroundColor = .red
label.layer.cornerRadius = 8
label.textAlignment = .center
label.text = "\(data)"
},
sizeProvider: { (index: Int, data: Int, collectionSize: CGSize) -> CGSize in
return CGSize(width: 50, height: 50) // return your cell size
}
)
To display the content, just assign this provider to any instance of CollectionView. No need to call reloadData, collectionView handles that for you.
collectionView.provider = provider
The code above display a simple collection with 4 cells, using default FlowLayout.
It looks something like:
CollectionProvider accepts the following as initialization parameters:
| Name | Description |
|---|---|
| data / dataProvider | supply data to collection provider. See CollectionDataProvider.swift for more detail. If an array is used, an ArrayDataProvider will be automatically generated to supply that array to the collection provider. |
| viewProvider / viewUpdater | supply views to collection provider. See CollectionViewProvider.swift for detail. if viewUpdater is used, then a ClosureViewProvider will be automatically constructed to supply views and update them with the viewUpdater function. |
| layout | object that layouts the cells. default: FlowLayout |
| sizeProvider | a function that provide cell sizes used during the layout. default: a size provider function that returns the collection view size |
| tapHandler | callback when a cell is tapped |
| willReloadHandler | callback that will be called when collection view begins to reload |
| didReloadHandler | callback that will be called when collection view finishes reload |