SwiftUI Hide List Cell if its empty - swift

Question

I have a view in my Swift5 project where I use SwiftUI.
It's a List View.
Is there any way to add or remove a VStack from the list depending on a variable's data?
I can't place any logic in that part of the code so now I'm struggling.
List {
VStack {
Text(txt)
.frame(minWidth: 0, maxWidth: .infinity, minHeight: 0, maxHeight: .infinity, alignment: .topLeading)
}
VStack { // this view should be displayed or hidden if the data variable is 0
Image(uiImage: image)
.resizable()
.scaledToFit()
.frame(minWidth: 0, maxWidth: .infinity, minHeight: 0, maxHeight: .infinity, alignment: .bottomLeading)
}.onReceive(imageLoader.didChange) { data in
self.image = UIImage(data: data) ?? UIImage()
// here I check if there is any kind of data
if data.count == 0 {
print("Data is 0 so there is no image") // in this case I don't need the second VStack
} else {
print("Data is not 0 so there is an image") // in this case I need the second VStack
}
}
}
I've never tried to learn SwiftUI, because I got used to Swift5 so I don't have any kind of SwiftUI knowledge.

Answer 1

Heres a simple view, if you click on the button the first item inside the List disappears and if you click it again it shows up again:
To achive this I use a #State Variable. Changing the State of my view forces my view to reload. There are many nice articles online that describe the functionality of #State.
import SwiftUI
struct ContentView: View {
#State private var show = true
var body: some View {
VStack {
List {
if show {
Text("Text1")
}
Text("Text2")
Text("Text3")
}
Button(action: {
self.show.toggle()
}) {
Text("Hide Text1")
}
}
}
}
You can achive the same in your example:
if data.count == 0 {
self.show = false
} else {
self.show = true
}
you can use the show variable that you set based on the data to display a view.
if show {
Text("Text1") // Or whatever view you like
}