Book Image

UI Animations with Lottie and After Effects

By : Mireia Alegre Ruiz, Emilio Rodriguez Martinez
Book Image

UI Animations with Lottie and After Effects

By: Mireia Alegre Ruiz, Emilio Rodriguez Martinez

Overview of this book

Lottie is a small and scalable JSON-based animation file. LottieFiles is the platform where Lottie animations can be uploaded, tested, and shared. By combining the LottieFiles plugin and the LottieFiles platform, you’ll be able to create stunning animations that are easy to integrate in any device. You’ll also see how to use the Bodymovin plugin in After Effects to export your animation to a JSON file. The book starts by giving you an overview of Lottie and LottieFiles. As you keep reading, you’ll understand the entire Lottie ecosystem and get hands-on with classic 2D animation principles. You’ll also get a step-by-step guided tour to ideate, sketch for storytelling, design an icon that will fulfill the needs and expectations of users based on UX, and finally animate it in Adobe After Effects. This will help you get familiar with the After Effects environment, work with vector shape layers, create and modify keyframes using layer properties, explore path and mask features, and adjust timing easily to create professional-looking animations. By the end of this animation book, you’ll be able to create and export your own Lottie animations using After Effects and implement them in mobile apps using React Native. You’ll also have an understanding of 2D animation best practices and principles that you can apply in your own projects.
Table of Contents (16 chapters)
1
Part 1 - Building a Foundation With After Effects and LottieFiles
5
Part 2 - Cracking Lottie Animations
9
Part 3 - Adding Your Lottie Animations Into Mobile Apps

8. My app won't build on iOS after installing lottie-react-native

The most common building issue for lottie-react-native in iOS has to do with the lack of support for React Native projects with Swift libraries. In this case, you need to create a Swift bridging header in order to get your app ready for Swift libraries:

  1. Add a new file through the Xcode menu: File | New | File:

Figure 11.1 – Create a new file in your Xcode project

  1. Select Swift File:

Figure 11.2 – Select Swift as the file type

  1. Click on Create Bridging Header:

Figure 11.3 – Confirm the creation of the bridging header

You may need to rebuild your project for the changes to take effect. Once this is done, lottie-react-native should be ready to display your animation on iOS.