FREE TRIAL: Accelerate your app development career with Hacking with Swift+! >>

How to apply multiple animations to a view

Paul Hudson    @twostraws   

Updated for Xcode 13.0

The order in which we use SwiftUI’s animation() modifier affects which modifiers get animated, and it’s also possible to add multiple animation() modifiers in order to get different animations.

For example, we could write code to create a button that animates between enabled and disabled states, making the corner rounding and background color changes. If we wanted the corner rounding to animate but not the color change, we’d use an animation such as animation(.default) after the clip shape, then animation(nil) after the background, like this:

struct ContentView: View {
    @State private var isEnabled = false

    var body: some View {
        Button("Press Me") {
            isEnabled.toggle()
        }
        .foregroundColor(.white)
        .frame(width: 200, height: 200)
        .background(isEnabled ? Color.green : Color.red)
        .animation(nil, value: isEnabled)
        .clipShape(RoundedRectangle(cornerRadius: isEnabled ? 100 : 0))
        .animation(.default, value: isEnabled)
    }
}

Download this as an Xcode project

Using this technique it’s possible to animate every modifier differently if you need to.

Hacking with Swift is sponsored by Essential Developer

SPONSORED Join a FREE crash course for iOS devs who want to become complete senior developers — from October 18th to 24th. Learn how to apply iOS app architecture patterns through a series of lectures and practical coding sessions.

Learn more

Sponsor Hacking with Swift and reach the world's largest Swift community!

Similar solutions…

BUY OUR BOOKS
Buy Pro Swift Buy Swift Design Patterns Buy Testing Swift Buy Hacking with iOS Buy Swift Coding Challenges Buy Swift on Sundays Volume One Buy Server-Side Swift (Vapor Edition) Buy Advanced iOS Volume One Buy Advanced iOS Volume Two Buy Advanced iOS Volume Three Buy Hacking with watchOS Buy Hacking with tvOS Buy Hacking with macOS Buy Dive Into SpriteKit Buy Swift in Sixty Seconds Buy Objective-C for Swift Developers Buy Server-Side Swift (Kitura Edition) Buy Beyond Code

Was this page useful? Let us know!

Average rating: 5.0/5

 
Unknown user

You are not logged in

Log in or create account
 

Link copied to your pasteboard.