How to change SwiftUI Picker view size with no additional space?

Question

I'm new to SwiftUI and trying to implement Piker view from SwftUI.

I have simple Picker with a few elements in it to display. I set a frame with to 50 only, added border to it and applied view modifier .clipped(). Heres code:

import SwiftUI

struct ContentView: View {
var body: some View {
        VStack {
            Picker(selection: .constant(1), label: Text("")) {
                Text("1").tag(1)
                Text("2").tag(2)
                Text("3").tag(3)
            }
            //.clipped()
            .labelsHidden()
            .frame(width: 50)
            .clipped()
        }
        .border(Color.red)
   }
}

Everything looks ok. But, the problem start to occur when run the app and at the moment of running just open Debug View Hierarchy and you'll see like the actual size if Picker width is much bigger and I don't know why is that happening. Please, if you know how to fix it, I'll appearance it a lot, thank you 🙏

Does this answer your question stackoverflow.com/questions/63497649/…? Actually why it is a problem for you, it is internal representation? — Asperi
– Asperi, Commented Jan 8, 2021 at 14:25
thanks but it didn't work with iOS 14 and Xcode 12.3. This is the problem to me because when I combine it with other UI elements then it will block the interaction with other UI — ViOS
– ViOS, Commented Jan 8, 2021 at 14:41

Asperi · Accepted Answer · 2021-01-08 15:06:05Z

3

Try with content shape, it should restrict picker hit testing only to clipped area, like

VStack { 
    Picker(selection: .constant(1), label: Text("")) { 
          Text("1").tag(1) 
          Text("2").tag(2) 
          Text("3").tag(3) 
     } //.clipped() 
     .labelsHidden()
     .frame(width: 50) 
     .clipped()
     .contentShape(Rectangle())   // << here !!
  }

answered Jan 8, 2021 at 15:06

Asperi

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1 Comment

ViOS Over a year ago

Thank you so much for your help, it works like a charm) I actually did't know that in SwiftUI we can define interacting area of the view, pretty cool 🙂

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