【SwiftUI】ScrollView や List を snap する 👉 https://android.benigumo.com/20240424/snap-list/

SnapList.swift

import SwiftUI

struct SnapList: View {
  private let colors: [Color] = [
    .white, .black, .red, .blue, .yellow, .green
  ]

  var body: some View {
    ScrollView {
      LazyVStack(spacing: 0) {
        ForEach(0..<30, id: \.self) { i in
          colors[i % 6]
            .frame(height: 100)
        }
      }
      .scrollTargetLayout() // *
    }
    .scrollTargetBehavior(.viewAligned) // *
    .frame(width: 300, height: 300)
    .border(.gray)
  }
}

#Preview {
  SnapList()
}