Relating to designing visually interesting and intuitive consumer interfaces in iOS improvement, SF Symbols are a useful asset. It presents a complete library of over 5,000 customizable icons, designed particularly for iOS and macOS functions. The most recent iOS 17 replace brings SF Symbols 5, which introduces a implausible assortment of expressive animations. SwiftUI presents builders the flexibility to leverage these animations utilizing the brand new symbolEffect modifier.
This characteristic 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 partaking interfaces. On this tutorial, we’ll present you how one can work with this new modifier to create varied forms 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 sort. Right here is an instance:
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struct ContentView: View {     @State non-public 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 Substitute. Within the code above, we use the bounce animation. So, whenever you faucet the image within the preview canvas, it exhibits a bouncing impact.
Make it Repeatable
By default, the animation is simply performed as soon as. To make it repeatable, you’ll be able to set the choices parameter of the modifier to .repeating like this:
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.symbolEffect(.bounce, choices: .repeating, worth: animate) |
This may obtain an animated impact that repeats indefinitely. In the event you need to repeat the impact for a selected variety of occasions, you’ll be able to make the most of the .repeat perform and point out the specified repeat rely as proven beneath:
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.symbolEffect(.bounce, choices: .repeat(5), worth: animate) |
Controlling the animation pace
As well as, you could have the flexibleness to customise the animation pace by using the .pace perform inside the choices parameter. As an example, for those who want to decelerate the animation, you’ll be able to set the worth of the .pace perform to 0.1, as demonstrated beneath:
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.symbolEffect(.bounce, choices: .pace(0.1), worth: animate) |
Animation Varieties
As acknowledged earlier, SwiftUI supplies quite a lot of built-in animation varieties, akin to Bounce, Scale, Pulse, Variable Shade, and Substitute. Up till now, we’ve completely used the bounce animation. Now, let’s discover and take a look at out different animation varieties utilizing the supplied code snippet:
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struct SymbolAnimationView: View {     @State non-public 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 (entire)”)                     .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 presents a definite impact by regularly 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.
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.symbolEffect(.bounce.down, choices: .repeating, worth: animate) |
For added flexibility, it’s doable to use a number of symbolEffect modifiers to a view, permitting you to attain a customized impact by combining completely different animations.
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Picture(systemName: “ellipsis.message”) Â Â Â Â .font(.system(measurement: 100)) Â Â Â Â .symbolRenderingMode(.palette) Â Â Â Â .foregroundStyle(.purple, .grey) Â Â Â Â .symbolEffect(.bounce, choices: .pace(1.5), worth: animate) Â Â Â Â .symbolEffect(.pulse, choices: .repeating, worth: animate) Â Â Â Â .onTapGesture { Â Â Â Â Â Â Â Â animate.toggle() Â Â Â Â } |
Content material Transition and Substitute Animation
In sure eventualities, there could also be a must transition between completely 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 Substitute animation, as demonstrated beneath:
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Picture(systemName: animate ? “checkmark.circle” : “touchid”) Â Â Â Â .font(.system(measurement: 100)) Â Â Â Â .symbolRenderingMode(.palette) Â Â Â Â .symbolEffect(.bounce, worth: animate) Â Â Â Â .contentTransition(.symbolEffect(.change)) Â Â Â Â .foregroundStyle(.purple, .grey) Â Â Â Â .onTapGesture { Â Â Â Â Â Â Â Â animate.toggle() Â Â Â Â } |
Abstract
SF Symbols and symbolEffect present builders with highly effective instruments to reinforce consumer interactions and create visually partaking interfaces in iOS and macOS functions.
This tutorial demonstrates the fundamental utilization of symbolEffect, making animations repeatable, controlling animation pace, and exploring completely different animation varieties. It additionally covers content material transition and change animation.
When you have discovered this tutorial fulfilling and want to discover SwiftUI additional, we extremely suggest trying out our complete guide, “Mastering SwiftUI.“
