效果：

代码：

import React, { Component } from 'react';

import { AppRegistry, Text, Button, Alert } from 'react-native';



export default class PizzaTranslator extends Component {

    render() {

        return (

            <Button

                onPress={() => {

                    Alert.alert("你点击了按钮！");

                }}

                title="点我！"

            />

        );

    }

}