react-linear-gradient

import * as React from 'react';
import { Component } from 'react';
import {
    StyleSheet,
    Text,
    View
} from 'react-native';
import LinearGradient from '@amazon-devices/react-linear-gradient'

const styles = StyleSheet.create({
    linearGradient: {
        justifyContent:"center",
        width:500,
        height:100,
        borderRadius:5
    },
    buttonText: {
        fontSize: 18,
        fontFamily: 'Gill Sans',
        textAlign: 'center',
        margin: 10,
        color: '#ffffff',
        backgroundColor: 'transparent',
    }
});

export class LinearGradientScreen extends Component {
    render() {
        return (
            <View style={{flex:1, backgroundColor: "transparent", justifyContent:"center", alignItems: "center"}}>
                <LinearGradient
                    colors={['#4c669f', '#3b5998', '#192f6a']}
                    style={styles.linearGradient}
                >
                    <Text style={styles.buttonText}>
                        ここにテキストを表示
                    </Text>
                </LinearGradient>
            </View>
        );
    }
}

export default LinearGradientScreen;