SwiftUI - Button Action to Alert and take action - swiftui

Question

I am trying to send alert based on a condition, but the Navigation link is executing regardless of the condition. I was hoping for an intercept.
Goal:
If condition is not me then do not launch new view
New View is launching and then alert.
I am sure my code is incorrect, but I am unsure how I should achieve this
Thanks in advance.
var body: some View {
NavigationView {
VStack {
Button(action: {}) {
//NavigationLink(destination: secondView()) {
NavigationLink(destination: checkState()) {
Text("Add to Cart")
}.padding()
.font(.system(size: 14))
.background(Color.red)
.foregroundColor(.white)
.cornerRadius(6)
}
}
}.padding()
} // End of the GetOrder Struct
struct GetdOrderView_Previews: PreviewProvider {
static var previews: some View {
GetdOrderView()
}
}
}
struct checkState: View {
#ObservedObject var calcCheck = MealOrder()
#State var showingAlert = false
#State var myToggle = false
var body: some View {
NavigationView {
VStack {
Button(action: {
//Enter Action here
if self.myToggle == true {
self.showingAlert = true
} else {
self.showingAlert = true
}
}) {
Text("This is a test")
}.padding()
.font(.system(size: 14))
.background(Color.blue)
.foregroundColor(.white)
.cornerRadius(6)
//Insert Alerts
.alert(isPresented: $showingAlert) {
if self.myToggle {
return Alert(title: Text("Showing Message"), message: Text("Cart is valid"), dismissButton: .default(Text("OK")))
} else {
return Alert(title: Text("Showing Alert"), message: Text("Cart Empty"), dismissButton: .default(Text("Cancel")))
}
}
}
}
}
}
struct secondView: View {
var body: some View {
VStack {
Text("This is the second test")
}
}
}

Answer 1

Try the following approach
#State var activateLink = false
var body: some View {
NavigationView {
VStack {
NavigationLink(destination: checkState(), isActive: $activateLink) {
EmptyView()
}
Button(action: {
if _YOUR_CONDITION_HERE_ {
self.activateLink = true
}
}) {
Text("Add to Cart")
.padding()
.font(.system(size: 14))
.background(Color.red)
.foregroundColor(.white)
.cornerRadius(6)
}
}
.onAppear { self.activateLink = false }
}.padding()
}// End of the GetOrder Struct