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Showing content from https://github.com/react-native-community/react-native-masked-view below:

react-native-masked-view/masked-view: React Native Masked View Library

Provides a React component that renders a masked view.

• iOS
• Android
• Web

yarn add @react-native-masked-view/masked-view

or

npm install --save @react-native-masked-view/masked-view

Linking the package manually is not required anymore with Autolinking.

Remember to install the pod with:

You then need to link the native parts of the library for the platforms you are using. The easiest way to link the library is using the CLI tool by running this command from the root of your project:

react-native link @react-native-masked-view/masked-view

Import the MaskedView component from @react-native-masked-view/masked-view and use it like so:

import React from 'react';
import { Text, View } from 'react-native';
import MaskedView from '@react-native-masked-view/masked-view';

const App = () => {
  return (
    <MaskedView
      style={{ flex: 1, flexDirection: 'row', height: '100%' }}
      maskElement={
        <View
          style={{
            // Transparent background because mask is based off alpha channel.
            backgroundColor: 'transparent',
            flex: 1,
            justifyContent: 'center',
            alignItems: 'center',
          }}
        >
          <Text
            style={{
              fontSize: 60,
              color: 'black',
              fontWeight: 'bold',
            }}
          >
            Basic Mask
          </Text>
        </View>
      }
    >
      {/* Shows behind the mask, you can put anything here, such as an image */}
      <View style={{ flex: 1, height: '100%', backgroundColor: '#324376' }} />
      <View style={{ flex: 1, height: '100%', backgroundColor: '#F5DD90' }} />
      <View style={{ flex: 1, height: '100%', backgroundColor: '#F76C5E' }} />
      <View style={{ flex: 1, height: '100%', backgroundColor: '#e1e1e1' }} />
    </MaskedView>
  );
}

export default App

The following image demonstrates that you can put almost anything behind the mask. The three examples shown are masked <View>, <Text>, and <Image>.

you need to install moden-screenshot package for web usage:

yarn add modern-screenshot

• View props...

• maskElement

• androidRenderingMode

By default hardware rendering mode will be used for best performance, however if you need to animate your maskElement then you’ll need to switch to software to get your mask to update. This prop only affects Android.

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