React Nativeでピアノを作る - Qiita

import React from 'react'; import { StyleSheet, Text, TouchableOpacity, View, } from 'react-native'; import Sound from 'react-native-sound'; export default class App extends React.Component { constructor( props ){ super( props ); this.state = { colorC : "white", colorCs: "black", colorD : "white", colorDs: "black", colorE : "white", colorF : "white", colorFs: "black", colorG : "white", colorGs: "b