How to animate SwiftUI views?

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There are several ways to animate views in SwiftUI. Here are a few examples:

Using the .animation() modifier: The .animation() modifier can be used to specify an animation to be applied to a view. For example, you could use the .scale() animation to make a view grow or shrink:

Text("Hello World")
    .animation(.scale)

Using the withAnimation() function: The withAnimation() function can be used to wrap a change to a view’s state in an animation. For example, you could use it to animate a view’s position when it is tapped:

struct MyView: View {
    @State private var isTapped = false
    
    var body: some View {
        Button(action: {
            withAnimation {
                self.isTapped.toggle()
            }
        }) {
            Text("Tap me")
                .offset(x: isTapped ? 50 : 0)
        }
    }
}

Using custom animations: You can also create custom animations in SwiftUI by using the Animation type and the animation() modifier. For example, you could create an animation that scales and rotates a view simultaneously:

struct MyView: View {
    @State private var scale: CGFloat = 1.0
    @State private var angle: Double = 0.0
    
    var body: some View {
        Rectangle()
            .scaleEffect(scale)
            .rotationEffect(.degrees(angle))
            .animation(
                Animation.easeInOut(duration: 1.0)
                    .repeatForever(autoreverses: true)
            )
            .onAppear {
                self.scale = 1.5
                self.angle = 45.0
            }
    }
}

✍️ Written by Ishtiak Ahmed

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