How do I use ColorFilter with React-Native-Lottie?

When using Lottie animations in a React Native project, it may be necessary to customize or adjust the animation's colors. This can be achieved using ColorFilter. ColorFilter allows you to modify the color of specific elements within a Lottie animation, enabling better alignment with your application's theme or brand colors.

How to Implement:

1. Installing and Importing Lottie:

First, ensure Lottie is installed in your React Native project. If not, add it using npm or yarn:

bash
npm install --save lottie-react-native
# or
yarn add lottie-react-native

1. Importing the Lottie Component:

Import LottieView into your React component:

javascript
import LottieView from 'lottie-react-native';

1. Using ColorFilter:

Use the colorFilters prop to define which parts of the animation should be color-adjusted. This prop accepts an array where each object includes properties like keypath and color. The keypath specifies the animation element to target, while color defines the desired color.

For example, if you have a Lottie animation with a layer named shape and you want to change its color to red, implement it as follows:

jsx
<LottieView
  source={require('./path/to/animation.json')}
  autoPlay
  loop
  colorFilters={[
    {
      keypath: "shape",
      color: "#FF0000",
    },
  ]}
/>

Example:

Suppose you have an animation with multiple layers and you want to change the colors of two specific layers:

• The first layer named "circle" should be changed to blue.
• The second layer named "star" should be changed to yellow.

Here is the implementation code:

jsx
<LottieView
  source={require('./path/to/animation.json')}
  autoPlay
  loop
  colorFilters={[
    {
      keypath: "circle",
      color: "#0000FF",  // blue
    },
    {
      keypath: "star",
      color: "#FFFF00",  // yellow
    },
  ]}
/>

Important Notes:

• Ensure the keypath value precisely matches the layer name in your Lottie animation file.
• The color value must be a valid hexadecimal color code.

By following these steps and examples, you can flexibly adjust Lottie animation colors in React Native to perfectly match your application's requirements.