CODEWITHSUNDEEP
swiftuigesture
it75
it75

Reputation: 153

Conditionally activate Gesture in SwiftUI

I'm looking for a way to able/disable DragGesture or to pass conditionally pass the Gesture to MyView() in swiftUI according to @State private var isDraggable:Bool

Since MyView() has some parameters that are reset on Appear() and Disappear(), I can not just do

If isDraggable { MyView() }else{MyView().gesture() }

How DragGesture is implemented in my code

MyView().gesture(DragGesture(minimumDistance: 0) .onChanged { value in} )

Upvotes: 2

Views: 2007

Answers (2)

Simon W
Simon W

Reputation: 51

I think this is what you are looking for: it worked very well for me. You just add isEnabled: as second param of the method gesture (DragGesture() being the first param), which is a boolean (your isDraggable), very straightforwardly:

MyView().gesture(
        DragGesture(minimumDistance: 0)
            .onChanged { value in},
        isEnabled: isDraggable)

Upvotes: 1

lorem ipsum
lorem ipsum

Reputation: 29242

You can use GestureMask and choose between gestures

you can have .all, .none, .subviews, or .gesture

.gesture in your case would be the DragGesture.

.subviews would allow any gestures inside MyView

.all is both the DragGesture AND any gestures inside MyView (this is the default)

import SwiftUI

struct ConditionalGestureView: View {
    @State var activeGestures: GestureMask = .subviews
    var body: some View {
        MyView()
            .gesture(DragGesture(), including: activeGestures)
    }
}

Change the activeGestures variable per your use case

Upvotes: 7

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