react-native-elements：图标抛出不变违规错误

Question

我是 React Native 的新手，我遇到了一个我不知道如何解决的问题。我创建并启动了一个新项目如下：

create-react-native-app 项目名称
cd 项目名称
yarn 添加 react-native-elements@beta
npm 启动

package.json 看起来像这样：

 {
  "name": "test",
  "version": "0.1.0",
  "private": true,
  "devDependencies": {
    "jest-expo": "25.0.0",
    "react-native-scripts": "1.11.1",
    "react-test-renderer": "16.2.0"
  },
  "main": "./node_modules/react-native-scripts/build/bin/crna-entry.js",
  "scripts": {
    "start": "react-native-scripts start",
    "eject": "react-native-scripts eject",
    "android": "react-native-scripts android",
    "ios": "react-native-scripts ios",
    "test": "node node_modules/jest/bin/jest.js"
  },
  "jest": {
    "preset": "jest-expo"
  },
  "dependencies": {
    "expo": "^25.0.0",
    "react": "16.2.0",
    "react-native": "0.52.0",
    "react-native-elements": "^1.0.0-beta3"
  }
}

然后我想插入一个带有这样图标的按钮：

import React from 'react';
import { StyleSheet, Text, View } from 'react-native';
import { Button } from 'react-native-elements';

export default class App extends React.Component {
  render() {
    return (
      <View style={styles.container}>
        <Text>Open up App.js to start working on your app!</Text>
        <Text>Changes you make will automatically reload.</Text>
        <Text>Shake your phone to open the developer menu.</Text>
        <Button
          raised
          icon={{ name: 'cached' }}
          title='BUTTON WITH ICON' />
      </View>
    );
  }
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    backgroundColor: '#fff',
    alignItems: 'center',
    justifyContent: 'center',
  },
});

不幸的是，我收到此错误消息：

error message on iphone

有没有人提示我如何使图标起作用？我已经尝试使用 'yarn add react-native-vector-icons' 添加矢量图标，尽管我确实有一个 create-react-native 项目，但这也不起作用。

谢谢！

Answer 1

应该是这样的：

import { Button } from 'react-native-elements';
import Icon from 'react-native-vector-icons/FontAwesome';
...
<Button
  icon={
    <Icon
      name='arrow-right'
      size={15}
      color='white'
    />
  }
  title='BUTTON WITH ICON'
/>

react-native-elements：图标抛出不变违规错误

react-native-elements: icons throw Invariant Violation error

reactjs

react-native

create-react-native-app

vector-icons