我在我的React Native应用程序中使用了一个简单的文本组件。然后fontWeight（仅粗体）不仅适用于iOS。我已经在项目中插入了所有需要的字体（所有字体都在Android上运行良好）。
这是我的项目设置。
root/react-native.config.js

module.exports = {
  project: {
    ios: {},
    android: {},
  },
  assets:['/src/assets/fonts/']
}

字符串
package.json

{
  "name": "boldfont",
  "version": "0.0.1",
  "private": true,
  "rnpm": {
    "assets": [
      "./src/assets/fonts"
    ]
  },
...  ...  ...
}

型
root/src/assets/fonts/

我把所有这些字体都添加到了android/app/src/main/assets/fonts中。

That is my code.

型
Stext.js

import React from 'react';
import styled from 'styled-components/native';

function Stext({ ...props }) {
    return <Text {...props}>{props.children}</Text>
}

const Text = styled.Text`
    ${({ title, medium, small }) => {
        switch (true) {
            case title:
                return 'font-size: 48px;'
            case medium:
                return 'font-size: 20px;'
            case small:
                return 'font-size: 12px;'
            default:
                return 'font-size: 14px;'
        }
    }};

    ${({ PopBold, PopSemi, PopMedium }) => {
        switch (true) {
            case PopBold:
                return 'fontFamily: Poppins-Bold'
            case PopSemi:
                return 'fontFamily: Poppins-SemiBold'
            case PopMedium:
                return 'fontFamily: Poppins-Medium'
            default:
                return 'fontFamily: Poppins-Regular'
        }
    }}
`

export default Stext;

型
HomeScreen.js

import React from 'react'
import { View } from 'react-native'
import Stext from '../components/Stext'

export default function HomeScreen() {
  return (
    <View>
      <Stext PopBold>Android only</Stext>      // iOS not working
      <Stext PopSemi>Android and iOS</Stext>
      <Stext PopMedium>Android and iOS</Stext>
      <Stext>Android and iOS</Stext>
    </View>
  )
}

型