Using Lottie!Jinju Jang

What is Lottie?✦ Lottie is an iOS, Android, and React Native library built by the

Airbnb engineering & design team.

✦ It converts After Effects animations to a format for use in your app.

✦ After Effects animations in your app…?! So tempting!

…This is a lightning talk!✦ The learning curve - Time, difficulty, shippable or not.

✦ My honest review - Good, bad, or weird experience through the exploring.

Part 1.

The Learning curveLottie workflow & Time spent

Let’s make art!

Lottie Workflow

.JSON

Export Import

Body-movin

Lottie

Time spent & Difficulty

DAY 1Started learning

After Effects

DAY 4Made something

okay

Day 5++Trying it with

Xcode!

🌶 🌶🌶🌶🌶🌶 🌶

Setting up Workflow = DONE!

Part 2.

(My honest) ReviewGood, bad, and weird things

First impression = Easier than i thought!

creating conditions

Good = min-maxing!✦ From an idea to actual screen = less than 7 days

✦ FYI, This type of idea usually gets rejected by your PM. (Because it takes too much time!)

✦ A designer can work in parallel with a developer.

✦ You can boost up creativity!

✦ Super light. …The whole animation is only 9-15kb.

Bad…? Perhaps?

✦ It’s less smart when you want to swap an animation to something else. (We ended up using layer order)

✦ Honestly, there is nothing *seriously* bad.

Weird = Frame rates✦ Frame rates seem slightly off compared to After Effects.

✦ I don’t know what exactly causes this issue.

✦ Let me know if you know how to solve this!

Note: After the talk, many developers came to me and explain why. It wasn’t smooth because the CPU was rendering each single frame to show the animation. (That was how Lottie worked!) —> Hmm… I guess that’s something you need to trade off to get convenience for now!

Not now, but One day…✦ Complex layer effects

✦ Merged vector layers

✦ Gradient

✦ Buttons

✦ …Will be supported!

Please….

Conclusion✦ Recommend it, it’s really fun.

✦ Until it becomes more clever, the best place to use it is somewhere you don’t have to worry too much. (e.g: Replace static illustration with a looping animation?)

✦ Treat it as decoration.

Thank you!@arle13