Depending on what you need, there are three versions of the modifier you can choose: With this method, we tell SwiftUI if a view accepts drops, what types of items can be dropped, plus some other useful information. func onDrag(_ data: () -> NSItemProvider) -> some View The Dropįor the drop part, SwiftUI has a modifier called onDrop(). By adding this modifier to a view, you are doing two important things: you are telling SwiftUI that the view is draggable, and you also set the data that will be attached to the drag operation (in the form of NSItemProvider objects). For the Drag, SwiftUI has a single method called onDrag(). The DragĪ drag and drop operation, as you can imagine, consists of two parts: the drag, and the drop. We will also look into List views and some special considerations. They may not be SwiftUI related, but the NSItemProvider part is the same.Īlong the way we will also discuss some annoying bugs that still affect Drag and Drop with SwiftUI. If the examples in this post are not sufficient, surf away, and you will find that the Internet is full of resources. This is the class that carries the information of the dragged data, and it is a class that has been around for many years. However, if you are completely new to drag and drop on macOS/iOS, the challenge will be to understand NSItemProvider. Fortunately, that changed with the latest iOS13.4 beta release.ĭrag and Drop with SwiftUI is very simple. Until iOS 13.4, most of these methods were macOS exclusive. SwiftUI incorporates some methods and protocols to easily perform Drag and Drop operations.
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