Lottie: Animating the bridge between Designers and Developers

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Designer was feeling high that day..

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Developer was feeling low that day..

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With Lottie, all are happy!

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Lottie Animating the bridge between Designers and Developers

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Animations in Mobile 1. Building Animations by hand 2. Facebook Keyframes 3. GIFs/PNG sequences 4. Animated Vector Drawable (Android) 5. Quartz 2D (iOS) 6. Lottie for Android / iOS / Web / React

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We have a winner

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What is Lottie? Umm.. Lotte Choco Pie?

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Lottie is named after a German ﬁlm director and the pioneer of silhouette animation, Lotte Reiniger. Papageno

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Lottie Lottie is a tool by Airbnb that parses Adobe After Effects animations exported as json with Bodymovin and renders them on mobile.

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What else? Now engineers can use exactly what the designer intended, exactly how it was made

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“Dropping this into the app felt almost like cheating; I’d never implemented a complex animation in so little time.” - Nick Butcher, Google

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Inspired by Squall, Keyframes, RubberHose, 9 Squares Motion Corpse, Animography

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Workﬂow After Effects Bodymovin Lottie

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The Experiment Lottie can build animations in no time while creating them by hand can be daunting.

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How it works? It’s easier than you think. Almost magical

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Create an animation in AE

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Export using Bodymovin

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Bodymovin JSON output Bodymovin renders animation by iterating layers from After Effects in non-readable JSON.

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Upload on lottieﬁles.com

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Scan QR Code

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Lottie Android 1. Add Lottie dependency to your app gradle. 2. Add lottie-ﬁle.json to your project assets.

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Lottie Android 3. Use LottieAnimationView in XML or Java/Kotlin ﬁle.

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Lottie Android To reuse animation (like in list items), load from a network request JSONObject.

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Lottie Android Load animation through a ﬁle from assets folder or from the network.

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Lottie Android Control the animation or add listeners.

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Lottie iOS 1. Add Lottie using Cocoapods or Carthage. 2. Add lottie-ﬁle.json to your project.

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Lottie iOS 3. Use LottieAnimationView in Objective-C/Swift ﬁle.

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Hands on & • Installing BodyMovin Plugin in Adobe After Effects. • Creating an Animation in After Effects and render it using BodyMovin. • Creating cool Animations in Android using Lottie. Lets do some

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Pros 1. Simple Workﬂow 2. Cross Platform 3. Feature & API Support (>API 14) 4. Progress / Scale / Speed Control 5. On Demand Animations

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There are more.. 6. It supports loading JSON ﬁles over the network, which is useful for A/B testing. 7. It also has an optional caching mechanism, so frequently used animations, such as a wish-list heart, can load a cached copy each time. 8. Lottie animations can be driven by gestures using the animated progress feature, and animation speed can be manipulated by changing a simple value. 9. Text Delegate for text animations for say Internationalisation. 10.Specify layer and mask it for interactive Animated Transitions or change colour of any layer.

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Cons 1. Performance issues with complex animations. 2. Black Boxes because of non-readable JSON. 3. Its method count is 1057. Comp MC(Picasso) = 849 and MC(Glide) = 2879. Its dex count is 142. Comp DC(Picasso) = 106, DC(Glide) = 403. 4. Doesn't work with all text animations. Workaround: Convert text to Shapes/Masks. 5. Masks and mattes are less performant as Lottie renders layers using buffer for such animations. Workaround: use lesser frame rate.

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Who uses Lottie?

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References • http://airbnb.design/redeﬁningboundaries • http://airbnb.io/lottie/ • https://github.com/airbnb/lottie-android • https://blog.prototypr.io/a-lottie-to-like-6670f2bed3c5 • http://www.videocopilot.net/basic • http://www.lottieﬁles.com

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Lottie and The Noun Project on open-source animated icons. Modern Pictograms for Lottie

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Complimentary Tools Bringing Sketch and After Effects closer together

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Sketch2AE

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Inspector Spacetime

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Thank You! Nattu [Lead Product Designer at ServisHero] Jaspal Singh [Designer at ColorBlind] Garima Jain [Senior Android Dev at Fueled]