View not update when published variable in class changes within the class

Question

Talkwondo OP

Created Sep ’22

Replies 2

Boosts 1

Participants 2

I have a struct that need to present some view when variable in class changes.

Example:

struct Example: View {
  @StateObject var isText = ProviderDelegate()
  var body: some View {
   Text("here some text")
    if(isText.show) {
       Bar()
    }
}

the providerDelegate:

class Adapter: ObservableObject {
  @Published public var show: Bool = false;
   
   func changeShow() {
       show.toggle()
   }
   ...
}

when function from other class to changeShow the View is not updation, thus the bar() is not shown.

Why is that?

Boost

Answer 1

Talkwondo OP

Sep ’22

mistake in the class. @StateObject var isText = Adapter()

0

Answer 2

BabyJ OP

Sep ’22

Accepted Answer

Where are you calling changeShow()?

The code you provided should work fine. Can you show some more code which would reveal the problem.

I tested with this code and tapping the "Text" showed and hid the "Bar" text.

var body: some View {
   Text("Text")
        .onTapGesture {
            isText.changeShow()
        }

    if isText.show {
       Text("Bar")
    }
}

1