In relation to 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 purposes. The most recent iOS 17 replace brings SF Symbols 5, which introduces a unbelievable assortment of expressive animations. SwiftUI provides builders the flexibility 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 the way to work with this new modifier to create varied varieties of animations.
The Fundamental Utilization of SymbolEffect
To animate a SF image, you possibly can 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(dimension: 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, if 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 possibly can set the choices parameter of the modifier to .repeating like this:
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.symbolEffect(.bounce, choices: .repeating, worth: animate) |
This can obtain an animated impact that repeats indefinitely. For those who need to repeat the impact for a particular variety of instances, you possibly can make the most of the .repeat operate and point out the specified repeat depend as proven under:
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.symbolEffect(.bounce, choices: .repeat(5), worth: animate) |
Controlling the animation velocity
As well as, you could have the pliability to customise the animation velocity by using the .velocity operate throughout the choices parameter. As an example, when you want to decelerate the animation, you possibly can set the worth of the .velocity operate to 0.1, as demonstrated under:
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.symbolEffect(.bounce, choices: .velocity(0.1), worth: animate) |
Animation Varieties
As said earlier, SwiftUI supplies quite a lot of built-in animation varieties, similar to Bounce, Scale, Pulse, Variable Shade, and Substitute. Up till now, we now have solely used the bounce animation. Now, let’s discover and take a look at out different animation varieties utilizing the offered 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(dimension: 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(dimension: 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(dimension: 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(dimension: 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(dimension: 60)) .symbolRenderingMode(.palette) .foregroundStyle(.purple, .grey) .symbolEffect(.variableColor, choices: .repeating, worth: animate) Textual content(“Variable coloration”) .font(.largeTitle) }
} .onTapGesture { animate.toggle() } } } |
By tapping any of the pictures within the preview canvas, you possibly can see the animations coming to life. Compared to the bounce animation, the Pulse animation provides a definite impact by regularly fading the opacity of particular or all layers throughout 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 possibly can 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”) .font(.system(dimension: 100)) .symbolRenderingMode(.palette) .foregroundStyle(.purple, .grey) .symbolEffect(.bounce, choices: .velocity(1.5), worth: animate) .symbolEffect(.pulse, choices: .repeating, worth: animate) .onTapGesture { animate.toggle() } |
Content material Transition and Substitute Animation
In sure eventualities, there could also be a have to 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 possibly can make the most of the contentTransition modifier along with the Substitute animation, as demonstrated under:
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Picture(systemName: animate ? “checkmark.circle” : “touchid”) .font(.system(dimension: 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 reinforce consumer interactions and create visually participating interfaces in iOS and macOS purposes.
This tutorial demonstrates the essential utilization of symbolEffect, making animations repeatable, controlling animation velocity, and exploring completely different animation varieties. It additionally covers content material transition and change animation.
In case you have discovered this tutorial fulfilling and wish to discover SwiftUI additional, we extremely suggest trying out our complete guide, “Mastering SwiftUI.“