![]() We have all the pieces we need to make this work, the next step is animating them. This will give us the layers we see below. The main piece of this puzzle is MaskedViewIOS, a core React Native component. Now that we know what we are building and how the animation works, we can get down to the code - the reason you are really here. See the Pen Loading Screen Animation Steps by Eli White on Īlrighty. The grid is there to help visualize the transparent layers. Showing the layers gives you a side view perspective. How many words is an interactive visualization worth? Click through the animation with the “Next Step” button. ![]() We then hide the non-app layers as they will never be seen again. ![]() To finish the effect, we start the app layer at a scale > 1, and scale it down to 1 as the animation is ending. While the mask is scaling up, we fade in the opacity of the app layer, showing the app and hiding the solid white layer behind it. To reveal the app, we scale the mask up until it is larger than the entire screen. We use the Twitter logo as a mask, and having it mask two layers the solid white layer, and the app layer. The basics of masking in this context are having images where opaque pixels of the mask show the content they are masking whereas transparent pixels of the mask hide the content they are masking. I won’t go too deep on the details of masking, there are plenty of resources online for that. The main trick to this animation is using the Twitter logo as a mask and masking both the app, and the white layer. And then lastly, in the very front, is our app. Even though this seems to appear on top of the app, it is actually in the back. There are three main layers to this effect. To help visualize this effect, I recreated it in CodePen (embedded in a few paragraphs) so you can interactively see the different layers. You get this nice tutorial skipping to the good stuff!īefore we get to code, it is important to understand how to break this down. Luckily for you, dear reader, you don’t have to go through the same frustration I did. This approach doesn’t work because the Twitter bird becoming transparent would show the blue layer, not the app underneath! I started with an incorrect assumption that the blue background and Twitter bird were a layer on top of the app and that as the bird grew, it became transparent which revealed the app underneath. It took me quite a while to figure out how to make this animation. Scaling the app down slightly at the end.As the bird grows, showing the app underneath.There are a few major pieces in this that we will need to figure out how to build. The easiest way to see the subtlety is to slow it down. To understand how to build it, I first had to understand the difference pieces of the loading animation. I wanted to figure out how to recreate this loading animation with React Native. Once the app is ready, the Twitter logo delightfully expands, revealing the app. Twitter’s iOS app has a loading animation I quite enjoy. Implementing Twitter’s App Loading Animation in React Native React Native: Bringing modern web techniques to mobile.React Native for Android: How we built the first cross-platform React Native app.Right-to-Left Layout Support For React Native Apps.Expo Talks: Adam on Unraveling Navigation.0.36: Headless JS, the Keyboard API, & more.Introducing Button, Faster Installs with Yarn, and a Public Roadmap.A Monthly Release Cadence: Releasing December and January RC.React Native Performance in Marketplace.Implementing Twitter’s App Loading Animation in React Native.The State of the React Native Community in 2018.React Native Open Source Update March 2019.React Native at F8 and Open Source Podcast.React Native Open Source Update June 2019.Meet Hermes, a new JavaScript Engine optimized for React Native.Announcing React Native 0.61 with Fast Refresh.Meet Doctor, a new React Native command.Announcing React Native 0.62 with Flipper.Announcing React Native 0.63 with LogBox.The GAAD Pledge - Improving React Native Accessibility.Announcing React Native 0.64 with Hermes on iOS.The GAAD Pledge - March Accessibility Issues Update.React Native Is Hiring Managers, To Expand Beyond Mobile.Preparing Your App for iOS 15 and Android 12.An update on the New Architecture Rollout.React Native Accessibility - GAAD 2022 Update.Helping migrate React Native libraries to the New Architecture.React Native Core Contributor Summit 2022.React Native 0.71: TypeScript by Default, Flexbox Gap, and more.React Native 0.71-RC0 Android outage postmortem.Package Exports Support in React Native.React Native 0.72 - Symlink Support, Better Errors, and more.React Native 0.73 - Debugging Improvements, Stable Symlink Support, and more.
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