React Native Skia

High-performance 2d Graphics for React Native using Skia

Checkout the full documentation here.

React Native Skia brings the Skia Graphics Library to React Native. Skia serves as the graphics engine for Google Chrome and Chrome OS, Android, Flutter, Mozilla Firefox and Firefox OS, and many other products.

Getting Started

Installation instructions

Library Development

To develop react-native-skia, you need to build the skia libraries on your computer.

Make sure to check out the sub modules:

git submodule update --init --recursive

You also need to install some tools for the build scripts to work. Run yarn in the root of the project to install them.

Make sure you have all the tools required for building the skia libraries (XCode, Ninja, CMake, Android NDK / build tools).

On MacOS you can install Ninja via homebrew:

brew install ninja

If you have Android Studio installed, make sure $ANDROID_NDK is available. ANDROID_NDK=/Users/username/Library/Android/sdk/ndk/<version> for instance.

If the NDK is not installed, you can install it via Android Studio by going to the menu File > Project Structure.

And then the SDK Location section. It will show you the NDK path, or the option to Download it if you don't have it installed.

Building

Install dependencies yarn bootstrap
Build the Skia libraries with yarn build-skia (this can take a while)
Copy Skia headers yarn copy-skia-headers
Run pod install in the example project

Upgrading

If a new version of Skia is included in an upgrade of this library, you need to perform a few extra steps before continuing:

Update submodules: git submodule update --recursive --remote
Clean Skia: yarn clean-skia
Build Skia: yarn build-skia
Copy Skia Headers: yarn copy-skia-headers
Run pod install in the example project

Publishing

Run the commands in the Building section
Build the Android binaries with yarn build-skia-android
Build the NPM package with yarn build-npm

Publish the NPM package manually. The output is found in the dist folder.