Nested ScrollView SwiftUI - scrollview

Question

I am trying to put grid(developed with scrollview) inside scrollview but I can't set grid height with content height. I can't handle this problem with .fixedsize()
GeometryReader{ reader in
ScrollView{
Text(reader.size.height.description)
Text(reader.size.height.description)
FlowStack(columns: 3, numItems: 27, alignment: .leading) { index, colWidth in
if index == 0{
Text(" \(index) ").frame(width: colWidth).border(Color.gray)
.background(Color.red)
}
else if index == 1{
Text(" \(index) ").frame(width: colWidth).border(Color.gray)
}
else if index == 2{
Text(" \(index) ").frame(width: colWidth).border(Color.gray)
}
else{
Text(" \(index) ").frame(width: colWidth).border(Color.gray)
}
}
.background(Color.red)
Text(reader.size.height.description)
Text(reader.size.height.description)
}.fixedSize(horizontal: false, vertical: false)
}
Result
What I want

Answer 1

I don't know what did you wrote in FlowStack struct, that's why it's really hard to give right answer. There is how I solve this grid:
struct GridScrollView: View {
var body: some View {
GeometryReader{ geometry in
VStack {
Text("height: \(geometry.size.height.description)")
Text("width: \(geometry.size.width.description)")
ScrollView{
FlowStack(columns: 3, numItems: 60, width: geometry.size.width, height: geometry.size.height)
}
}
}
}
}
my FlowStack code:
struct FlowStack: View {
var columns: Int
var numItems: Int
var width: CGFloat
var height: CGFloat
private var numberOfRows: Int {
get {
numItems / columns
}
}
private var cellWidth: CGFloat {
get {
width / CGFloat(columns) - 4 // with padding
}
}
private var cellHeight: CGFloat {
get {
height / CGFloat(numberOfRows) - 4 // with padding
}
}
var body: some View {
ForEach(0..<self.numberOfRows, id: \.self) { row in
HStack {
ForEach(1...self.columns, id: \.self) { col in
Text("\(row * self.columns + col)")
.frame(width: self.cellWidth, height: self.cellHeight, alignment: .center)
.background(Color.red)
.border(Color.gray)
.padding(2)
}
}
}
}
}
and the result is:
P.S. that's my quick solution. I think you can also use this grid from github, it's quite massive, but flexible in my opinion