How do I properly use NavigationView in a ZStack? - swiftui

Question

I am trying to add some filter options to sit at the top of my view, above the NavigationView. I wrote the following code that mostly does what I want, however it disabled the ability to click on the rows to get to the detailed view. I assume this is because my filter buttons are on top of the ZStack, but I'm not sure how else to get this to work.
Here is the code I wrote:
import SwiftUI
struct BonusList: View {
var bonuses = sampleBonusData
#State var showSettings = false
#State var showBonuses = false
#State var bonusEarned = true
#State var showStatePicker = false
#State var showCategoryPicker = false
var body: some View {
ZStack {
NavigationView {
List(bonuses) { item in
NavigationLink(destination: BonusDetail(bonusName: item.bonusName, bonusCode: item.bonusCode, city: item.city, sampleImage: item.sampleImage)) {
HStack(spacing: 12.0) {
Image(item.sampleImage)
.resizable()
.aspectRatio(contentMode: .fill)
.frame(width: 60, height: 60)
.background(Color.white)
.cornerRadius(15)
VStack(alignment: .leading) {
HStack {
Text(item.bonusName)
.font(.headline)
Spacer()
Image(systemName: "checkmark.shield")
.opacity(self.bonusEarned ? 100 : 0)
}
Text("\(item.city), \(item.state)")
.font(.subheadline)
.frame(height: 25.0)
HStack {
Text(item.bonusCategory)
.font(.caption)
.fontWeight(.bold)
.foregroundColor(.gray)
.padding(.top, 4)
Spacer()
Text(item.bonusCode)
.font(.caption)
.fontWeight(.bold)
.foregroundColor(.gray)
.padding(.top, 4)
}
}
}
}
}
.navigationBarTitle(Text("Bonuses"))
// .navigationBarHidden(true)
}
.saturation(self.bonusEarned ? 0 : 1)
HStack {
FilterByCategory(showCategoryPicker: $showCategoryPicker)
Spacer()
FilterByState(showStatePicker: $showStatePicker)
}
StatePicker(showStatePicker: $showStatePicker)
CategoryPicker(showCategoryPicker: $showCategoryPicker)
}
}
}
This is what it looks like when I run it:

Answer 1

If I'm understanding correctly, you have a view or two which sit higher in the ZStack that are off canvas and come in when those buttons are tapped?
You could consider using a modal and setting the view you want to show for each button as the view for the modal. This will keep your views off screen and still allow interaction with your list. Here's what I've done...
On the main view
import SwiftUI
struct MainView: View {
#State private var isPresented = false
var body: some View {
NavigationView {
VStack {
//...
}
//Modal
.sheet(isPresented: $isPresented, content: {
AddItem(showModal: self.$isPresented)
})
}
}
}
The modal's view
import SwiftUI
struct AddItem: View {
#Binding var showModal: Bool
var body: some View {
VStack {
Button(action: {
self.showModal = false
}, label: {
Text("Cancel")
})
}
}
}