![]() ![]() If you need to brush up on the basics of UICollectionView, check out UICollectionView: Getting Started. A delegate allows you to respond to interaction, and a data source allows you to define what data is shown in the collection view. These can be either chosen from pre-existing layouts or you can define your own. You use a layout to define how the cells are laid out. Like UITableView, UICollectionView can contain both homogeneous and heterogeneous collections of views embedded inside a UICollectionViewCell. An example of such a layout is the iOS Photos app, which shows your data ordered in the grid layout and allows you to select an image and share or reposition it in your grid view. UICollectionView is one of the most important classes in UIKit, used to display data to a user in a customized layout. Mark Struzinski wrote a previous update, and Brandon Trebitowski wrote the original. Enable the Maximize Element button for a GroupBox via the GroupBox.MaximizeElementVisibility property.Update note: Fabrizio Brancati updated this tutorial for iOS 14.4, Swift 5.3 and Xcode 12.4. If the FlowLayoutControl.AllowMaximizedElementMoving option is enabled, an end-user can change this position via drag-and-drop.Ī GroupBox control automatically supports the maximization feature, when it’s displayed within a FlowLayoutControl. You can position the maximized element above, below, to the left or top of the remaining items. The position of the maximized item relative to the other items can be customized via the FlowLayoutControl.MaximizedElementPosition property. ![]() To maximize a specific item in code, you can assign it to the FlowLayoutControl.MaximizedElement property. The following image shows a GroupBox maximized within the FlowLayoutControl: This feature allows one of the control’s items to be maximized, so that it occupies the major part of the control, while other items are arranged in a column or row along the control’s edge. To enable item resizing, set the FlowLayoutControl.ShowLayerSeparators and FlowLayoutControl.AllowLayerSizing properties to true: Resizing columns/rows of items using built-in layer separators is supported. This feature is enabled via the FlowLayoutControl.AllowItemMoving property.Īt the end of the drag-and-drop operation, FlowLayoutControl raises the ItemPositionChanged event. In this mode, the items are arranged in a single column or row, according to the FlowLayoutControl.Orientation property:Īn end-user is able to move items to new position via drag-and-drop. ![]() Items can be stretched to the width/height of the FlowLayoutControl via the FlowLayoutControl.StretchContent property. In the following image, this property is enabled for Item 3 and Item 6: It’s possible to forcibly wrap the flow of the control’s items at a specific item using the FlowLayoutControl.IsFlowBreak attached property. In this instance, the items will be arranged in a single column or row. However, you can disable automatic item wrapping via the FlowLayoutControl.BreakFlowToFit property. By default, the flow of items is wrapped at the control’s edge, so when one column/row ends, another one automatically starts: The FlowLayoutControl is a container of items, that arranges items into either rows or columns, according to the FlowLayoutControl.Orientation property.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |