How to create array of different types that all conforms Equatable protocol?-CodePudding

I'm following a SwiftUI course, and I want to animate my view with multiple values. In the tutorial, the animation modifier is used without the value parameter but XCode says it's deprecated. animation modifier requires a value now.

My goal is to add multiple values to that animation, I think of Array for it. I have two boolean values, show and showCard and one CGSize.

I cast this array with as [Any] because Array of two boolean and 1 CGSize gives this error:

Cannot convert value of type 'CGSize' to expected element type 'Bool'

When I use as [Any], I can't conform Equatable.

Protocol 'Any' as a type cannot conform to 'Equatable'

And then I've tried like this:

as [Any : Equatable]

and error is:

Type 'Any' does not conform to protocol 'Hashable'

I can try lot of things but I want to understand:

How to give multiple values for 1 animation?

How to make an Array with different types, which all conforms to a protocol?

Code of my view:

    BackCardView()
        .frame(width: 340, height: 220)
        .background(Color(show ? "card4" : "card3"))
        .cornerRadius(20.0)
        .shadow(radius: 20)
        .offset(x: 0, y: show ? -200 : -20)
        .offset(x: viewState.width, y: viewState.height)
        .offset(y: showCard ? -140 : 0)
        .scaleEffect(showCard ? 1 : 0.95)
        .rotationEffect(Angle(degrees: (show ? 0: 5)))
        .rotationEffect(Angle(degrees:  showCard ? -5 : 0))
        .rotation3DEffect(Angle(degrees: showCard ? 5 : 0), axis: (x: 10.0, y: 0, z: 0))
        .blendMode(.hardLight)
        .animation(.easeInOut(duration: 0.3), value: [show, showCard, viewState])

CodePudding user response：

You need to apply various animations separately, e.g.

.animation(.easeInOut(duration: 0.3), value: show)
.animation(.easeInOut(duration: 0.3), value: showCard)
.animation(.easeInOut(duration: 0.3), value: viewState)

That is: each modifier applies the same animation to the view, but on different conditions.

CodePudding user response：

the problem here is that you the array that you need to transmit should be conform to equatable :

https://developer.apple.com/documentation/swift/equatable

When your array contains Bool and CGSize , swift can't perform equality between a Bool and CGSize. And In this context it doesn't make sens to make them equatable.

To realise what you want to do you can simply add 2 animation :

.animation(.default, value: [show, showCard])
.animation(.default, value: viewState)

CodePudding user response：

Try defining your array as type [Equatable].

That means "An array of things, all of which conform to the Equatable protocol".