Simple SwiftUI ?: Button that Adds

Question

ibo_bibo OP

Created Jan ’20

Replies 1

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I am trying to learn SwiftUI by myself. I've been stuck on this for a few hours now. Is the sytax wrong?

- I have an integer called x = 1

- want to make a Button that adds 10 to x

This is what i have now, but its giving me error: '()' is not convertible to '() -> Void'

var x: Int = 1
                Button(action: self.x = x + 10) {
                    Text("+10")
                }

Answered by jemmons in 401803022

the `action:` param is looking for a `()->Void` (a function that takes no params and returns nothing), but you're giving it a statement. You should wrap the statement in a closure to make it fit the requested type:

Button(action: {self.x = x + 10}) { 
  Text("+10") 
}

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Answer 1

jemmons OP

Jan ’20

Accepted Answer

the `action:` param is looking for a `()->Void` (a function that takes no params and returns nothing), but you're giving it a statement. You should wrap the statement in a closure to make it fit the requested type:

Button(action: {self.x = x + 10}) { 
  Text("+10") 
}

0