New in SwiftUI 3: SwiftUI 3 Animation in iOS 15

Like everything else in SwiftUI, attaching animation to your view is as easy as eating cake 😋. SwiftUI 3 brings more control over how animations are applied to the views.

New syntax:

@inlinable public func animation<V>(_ animation: Animation?, value: V) -> some View where V : Equatable

Omitting value parameter in SwiftUI doesn’t throw error yet but you get deprecation warning:

'animation' was deprecated in iOS 15.0: Use withAnimation or animation(_:value:) instead.

animation function without value parameter is marked to be deprecated in API:

@available(iOS, introduced: 13.0, deprecated: 15.0, message: "Use withAnimation or animation(_:value:) instead.")
@inlinable public func animation(_ animation: Animation?) -> some View

So what’s will this value parameter do? 🤨

Value parameter provides a way to control when the animation should be played. Consider code below:

struct AnimationChanges: View {
    
    @State private var offset: CGFloat = 0
    @State private var scaleValue: CGFloat = 1
    
    var body: some View {
        VStack {
            Text("DevTechie")
                .font(.largeTitle)
                .offset(x: offset)
                .scaleEffect(scaleValue)
                .animation(.easeInOut(duration: 5))
            
            Spacer()
            
            HStack {…