DragGesture
A dragging motion that invokes an action as the drag-event sequence changes.
Declaration
struct DragGestureMentioned in
Overview
To recognize a drag gesture on a view, create and configure the gesture, and then add it to the view using the gesture(_:including:) modifier.
Add a drag gesture to a Circle and change its color while the user performs the drag gesture:
struct DragGestureView: View {
@State private var isDragging = false
var drag: some Gesture {
DragGesture()
.onChanged { _ in self.isDragging = true }
.onEnded { _ in self.isDragging = false }
}
var body: some View {
Circle()
.fill(self.isDragging ? Color.red : Color.blue)
.frame(width: 100, height: 100, alignment: .center)
.gesture(drag)
}
}