Error with AppStorage (SwiftUI)

Question

Created May ’21

Replies 4

Boosts 0

Participants 2

Hi! I am trying to make a variable increase its value when pressing a button and if that value is greater than 2, +1 is added to another variable, I did it with an if that and at the time of writing that variable 2 adds its value tells me : Type '()' cannot conform to 'View'

Code Block struct SwiftUIView: View {
    @AppStorage ("num1") var num1: Int = 0
    @AppStorage ("num2") var num2: Int = 0
        var body: some View {
            VStack{
                    num1 = 2
                if num1 > 2
                {
                    num2 += 1
                }
            }
    }
}

Boost

Answer 1

OOPer OP

May ’21

Your code does not make sense. Where is button? You are writing executable statements where Views are required.

Put a button and write executable statements inside the action closure of the button.

1

Answer 2

4xel OP

May ’21

Accepted Answer

Sorry, I misspelled the code, actually it is

Code Block 
@AppStorage ("num1") var num1: Int = 0
@AppStorage ("num2") var num2: Int = 0
    var body: some View {
        VStack{
        Button(action: {
            num1 += 1
        }) {
            Image("+1")
                .resizable()
        }
            if num1 > 2
            {
                num2 += 1
            }
        }

0

Answer 3

OOPer OP

May ’21

Accepted Answer

Not a big difference.

Executable code such as

Code Block             if num1 > 2
            {
                num2 += 1
            }

needs to be in an action closure of the button.

Line 13...16 is a place to put Views, not the place for executable statements.

1

Answer 4

4xel OP

May ’21

Thank you very much for the help!

0