List view - any way to scroll horizontally? - swiftui

Question

I have a list that loads from a parsed CSV file built using SwiftUI and I can't seem to find a way to scroll the list horizontally.
List {
// Read each row of the array and return it as arrayRow
ForEach(arrayToUpload, id: \.self) { arrayRow in
HStack {
// Read each column of the array (Requires the count of the number of columns from the parsed CSV file - itemsInArray)
ForEach(0..<self.itemsInArray) { itemNumber in
Text(arrayRow[itemNumber])
.fixedSize()
.frame(width: 100, alignment: .leading)
}
}
}
}
.frame(minWidth: 1125, maxWidth: 1125, minHeight: 300, maxHeight: 300)
.border(Color.black)
The list renders how I would like but I'm just stuck on this one point.
Preview Image Of Layout

Answer 1

Swift 5;
iOS 13.4
You should use an ScrollView as Vyacheslav Pukhanov suggested but in your case the scrollView size does not get updated after the async call data arrive. So you have 2 options:
Provide a default value or an alternative view.
Provide a fixed size to the HStack inside of the ForeEach. (I used this one)
I faced the same problem laying out an horizontal grid of two columns. Here's my solution
import SwiftUI
struct ReviewGrid: View {
#ObservedObject private var reviewListViewModel: ReviewListViewModel
init(movieId: Int) {
reviewListViewModel = ReviewListViewModel(movieId: movieId)
//ReviewListViewModel will request all reviews for the given movie id
}
var body: some View {
let chunkedReviews = reviewListViewModel.reviews.chunked(into: 2)
// After the API call arrive chunkedReviews will get somethig like this => [[review1, review2],[review3, review4],[review5, review6],[review7, review8],[review9]]
return ScrollView (.horizontal) {
HStack {
ForEach(0..<chunkedReviews.count, id: \.self) { index in
VStack {
ForEach(chunkedReviews[index], id: \.id) { review in
Text("*\(review.body)*").padding().font(.title)
}
}
}
}
.frame(height: 200, alignment: .center)
.background(Color.red)
}
}
}
This is a dummy example don't expect a fancy view ;)
I hope it helps you.

Answer 2

You should use a horizontal ScrollView instead of the List for this purpose.
ScrollView(.horizontal) {
VStack {
ForEach(arrayToUpload, id: \.self) { arrayRow in
HStack {
ForEach(0..<self.itemsInArray) { itemNumber in
Text(arrayRow[itemNumber])
.fixedSize()
.frame(width: 100, alignment: .leading)
}
}
}
}
}