SwiftUI

Question

如何在 SwiftUI 中调整选择器视图的大小？我需要更改它占用的宽度。我下面的代码只是一个简单的视图，里面有一个选择器。更改宽度参数不会更改选取器视图的宽度。

struct CalibrationBar: View {
@State var tone = Int()
var body: some View{
    HStack{

        Button(action: {
                playTone(tone: self.tone, amp: 50, stop: true)
            }) {
                Text("50 dB")
        }
        .frame(width: 60.0)

            Picker(selection: .constant(1), label: Text("")) {
            Text("+0").tag(1)
            Text("+2").tag(2)
            Text("+4").tag(3)
            }
            .clipped()
            .frame(minWidth: 0, maxWidth: 100)
            .labelsHidden()

     }
   }
}

Answer 1

struct ContentView: View {
var body: some View{
    HStack{

        Button(action: {
            }) {
                Text("50 dB")
        }
        .frame(width: 60.0)

        VStack {
            Picker(selection: .constant(1), label: Text("")) {
            Text("+0").tag(1)
            Text("+2").tag(2)
            Text("+4").tag(3)
            }
            //.clipped()
            .frame(width: 50)
            .clipped()
        }.border(Color.red)
     }
   }
}

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picker