Utilizing SymbolEffect to Animate SF Symbols in iOS 17

In the case of designing visually interesting and intuitive consumer interfaces in iOS growth, SF Symbols are a useful asset. It provides a complete library of over 5,000 customizable icons, designed particularly for iOS and macOS functions. The newest iOS 17 replace brings SF Symbols 5, which introduces a unbelievable assortment of expressive animations. SwiftUI provides builders the power to leverage these animations utilizing the brand new symbolEffect modifier.

This function empowers builders to create various and fascinating animations inside their apps. By incorporating symbolEffect into your SwiftUI code, builders can improve consumer interactions and create visually participating interfaces. On this tutorial, we’ll present you methods to work with this new modifier to create numerous sorts of animations.

The Fundamental Utilization of SymbolEffect

To animate a SF image, you’ll be able to connect the brand new symbolEffect modifier to the Picture view and specify the specified animation kind. Right here is an instance:

struct ContentView: View {
    @State personal var animate = false

    var physique: some View {
        Picture(systemName: "ellipsis.message")
            .font(.system(measurement: 100))
            .symbolRenderingMode(.palette)
            .foregroundStyle(.purple, .grey)
            .symbolEffect(.bounce, worth: animate)
            .onTapGesture {
                animate.toggle()
            }
    }
}

There are a selection of built-in animations together with Seem, Disappear, Bounce, Scale, Pulse, Variable Shade, and Exchange. Within the code above, we use the bounce animation. So, once you faucet the image within the preview canvas, it reveals a bouncing impact.

Make it Repeatable

By default, the animation is just performed as soon as. To make it repeatable, you’ll be able to set the choices parameter of the modifier to .repeating like this:

.symbolEffect(.bounce, choices: .repeating, worth: animate)

It will obtain an animated impact that repeats indefinitely. Should you want to repeat the impact for a particular variety of occasions, you’ll be able to make the most of the .repeat perform and point out the specified repeat depend as proven under:

.symbolEffect(.bounce, choices: .repeat(5), worth: animate)

Controlling the animation pace

As well as, you may have the pliability to customise the animation pace by using the .pace perform inside the choices parameter. As an example, in case you want to decelerate the animation, you’ll be able to set the worth of the .pace perform to 0.1, as demonstrated under:

.symbolEffect(.bounce, choices: .pace(0.1), worth: animate)

Animation Varieties

As said earlier, SwiftUI gives a wide range of built-in animation varieties, comparable to Bounce, Scale, Pulse, Variable Shade, and Exchange. Up till now, we’ve got solely used the bounce animation. Now, let’s discover and check out different animation varieties utilizing the supplied code snippet:

struct SymbolAnimationView: View {
    @State personal var animate = false

    var physique: some View {
        VStack(alignment: .main, spacing: 50) {
            HStack {
                Picture(systemName: "mic.and.sign.meter")
                    .font(.system(measurement: 60))
                    .symbolRenderingMode(.palette)
                    .foregroundStyle(.purple, .grey)
                    .symbolEffect(.bounce, choices: .repeating, worth: animate)
                Textual content("Bounce")
                    .font(.largeTitle)
            }

            HStack {
                Picture(systemName: "mic.and.sign.meter")
                    .font(.system(measurement: 60))
                    .symbolRenderingMode(.palette)
                    .foregroundStyle(.purple, .grey)
                    .symbolEffect(.bounce.down, choices: .repeating, worth: animate)
                Textual content("Bounce (down)")
                    .font(.largeTitle)
            }

            HStack {
                Picture(systemName: "mic.and.sign.meter")
                    .font(.system(measurement: 60))
                    .symbolRenderingMode(.palette)
                    .foregroundStyle(.purple, .grey)
                    .symbolEffect(.pulse, choices: .repeating, worth: animate)
                Textual content("Pulse")
                    .font(.largeTitle)
            }

            HStack {
                Picture(systemName: "mic.and.sign.meter")
                    .font(.system(measurement: 60))
                    .symbolRenderingMode(.palette)
                    .foregroundStyle(.purple, .grey)
                    .symbolEffect(.pulse.wholeSymbol, choices: .repeating, worth: animate)
                Textual content("Pulse (complete)")
                    .font(.largeTitle)
            }

            HStack {
                Picture(systemName: "mic.and.sign.meter")
                    .font(.system(measurement: 60))
                    .symbolRenderingMode(.palette)
                    .foregroundStyle(.purple, .grey)
                    .symbolEffect(.variableColor, choices: .repeating, worth: animate)
                Textual content("Variable colour")
                    .font(.largeTitle)
            }

        }
        .onTapGesture {
            animate.toggle()
        }
    }
}

By tapping any of the pictures within the preview canvas, you’ll be able to see the animations coming to life. Compared to the bounce animation, the Pulse animation provides a definite impact by step by step fading the opacity of particular or all layers inside the picture. Alternatively, the variableColor animation replaces the opacity of variable layers within the picture, offering a singular visible transformation.

Even for the Bounce animation, you’ll be able to specify .bounce.down to bounce the image downward.

.symbolEffect(.bounce.down, choices: .repeating, worth: animate)

For added flexibility, it’s potential to use a number of symbolEffect modifiers to a view, permitting you to realize a customized impact by combining totally different animations.

Picture(systemName: "ellipsis.message")
    .font(.system(measurement: 100))
    .symbolRenderingMode(.palette)
    .foregroundStyle(.purple, .grey)
    .symbolEffect(.bounce, choices: .pace(1.5), worth: animate)
    .symbolEffect(.pulse, choices: .repeating, worth: animate)
    .onTapGesture {
        animate.toggle()
    }

Content material Transition and Exchange Animation

In sure eventualities, there could also be a must transition between totally different symbols inside a picture. As an example, when a consumer faucets the Contact ID image, it transforms right into a checkmark image. To make sure a seamless and visually pleasing transition, you’ll be able to make the most of the contentTransition modifier at the side of the Exchange animation, as demonstrated under:

Picture(systemName: animate ? "checkmark.circle" : "touchid")
    .font(.system(measurement: 100))
    .symbolRenderingMode(.palette)
    .symbolEffect(.bounce, worth: animate)
    .contentTransition(.symbolEffect(.change))
    .foregroundStyle(.purple, .grey)
    .onTapGesture {
        animate.toggle()
    }

Abstract

SF Symbols and symbolEffect present builders with highly effective instruments to boost consumer interactions and create visually participating interfaces in iOS and macOS functions.

This tutorial demonstrates the essential utilization of symbolEffect, making animations repeatable, controlling animation pace, and exploring totally different animation varieties. It additionally covers content material transition and change animation.

When you’ve got discovered this tutorial fulfilling and want to discover SwiftUI additional, we extremely advocate trying out our complete e book, “Mastering SwiftUI.“