I tried to implement a "pingpong" variable so I could alternate the background color of Views in a VStack.
For some reason the code below doesn't work and causes the compiler to report "Failed to Build."
When I remove the call to the switchBit() function from within the View, it compiles fine. What I am doing wrong here?
struct HomeScreen : View {
let colors: [Color] = [.green, .white]
@State var pingPong: Int = 0
var body: some View {
NavigationView {
GeometryReader { geometry in
ScrollView(.vertical) {
VStack {
ForEach(jobPostingData) { jobposting in
NavigationLink(destination: jobPostingPage()) {
JobListingsRow(jobposting: jobposting)
.foregroundColor(Color.black)
.background(self.colors[self.pingPong])
}
self.switchBit()
}
}
.frame(width: geometry.size.width)
}
}
.navigationBarTitle(Text("Current Listed Positions"))
}
}
func switchBit() {
self.pingPong = (self.pingPong == 1) ? 0 : 1
}
}
I guess you want alternate coloraturas for the rows. You will have to avoid the switchBit code and use something like below to switch colours:
struct Homescreen: View {
let colors: [Color] = [.green,.white]
@State var jobPostingData: [String] = ["1","2", "3","4"]
@State var pingPong: Int = 0
var body: some View {
NavigationView{
GeometryReader { geometry in
ScrollView(.vertical) {
VStack {
ForEach(self.jobPostingData.indices, id: \.self) { index in
JobListingsRow(jobposting: self.jobPostingData[index])
.foregroundColor(Color.black)
.background(index % 2 == 0 ? Color.green : Color.red)
}
}
.frame(width: geometry.size.width)
}
}
.navigationBarTitle(Text("Current Listed Positons"))
}
}
}