Creating Advanced Animations with KeyframeAnimator
In addition to the
PhaseAnimator, SwiftUI introduced the
KeyframeAnimator in iOS 17, allowing developers to create advanced animations using keyframes. In this tutorial, we will delve into the
KeyframeAnimator and learn how to create a more intricate animation.
PhaseAnimator view (or modifier), which we discussed in the previous tutorial, provides developers with the ability to create multi-step animations over a sequence of phases. By specifying the desired animations for each phase, the
PhaseAnimator automatically animates the content whenever the phase changes. It simplifies the process of building complex animations by handling the transitions between phases for you.
Working with KeyframeAnimator
For phase-based animation, it works well for animations that can be represented as discrete states. When a state transition happens, all properties are animated simultaneously. Once the animation for a particular state is completed, SwiftUI smoothly transitions to the next state. This process continues across all animation phases.
Keyframe-based animation is designed to accommodate a specific type of animation where each property is animated independently. By utilizing keyframes, we can animate individual properties separately, which in turn offers us greater flexibility and control over our animations.
Let’s try to animate an emoji icon (as illustrated above) and you will understand how we can use keyframe animator.
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