React native 无法在react本机应用程序中使用Ionicons

我正在尝试使用expo在react native app上使用Ionicons，不幸的是，图标未显示，收到以下错误：

fontFamily“ionicons”不是系统字体，未通过font.loadAsync加载

• 如果要使用系统字体，请确保键入的名称正确，并且设备操作系统支持该名称

• 如果这是自定义字体，请确保使用font.loadAsync加载它

我使用Iocincons的方式如下：

import { Ionicons }  from '@expo/vector-icons';

....

<Ionicons name="arrow-back" size={24} color="black" />

我已经尝试删除node_模块package-lock.json并运行npm安装，但没有解决问题

---

如果您有任何想法，我们将不胜感激。

将expo更新到41版解决了这个问题。

在您的代码中，您是否编写过类似这样的内容-

fontFamily:“ionicons”

？不，我在上面提供的示例中使用了ionicons@卡提克瓦伊什

{
  "main": "node_modules/expo/AppEntry.js",
  "scripts": {
    "start": "expo start",
    "android": "expo start --android",
    "ios": "expo start --ios",
    "web": "expo start --web",
    "eject": "expo eject"
  },
  "dependencies": {
    "@expo/vector-icons": "^12.0.4",
    "@react-native-community/masked-view": "^0.1.10",
    "axios": "^0.21.1",
    "expo": "~40.0.0",
    "expo-app-loading": "^1.0.1",
    "expo-font": "^9.0.0",
    "expo-status-bar": "~1.0.3",
    "react": "16.13.1",
    "react-dom": "16.13.1",
    "react-native": "https://github.com/expo/react-native/archive/sdk-40.0.1.tar.gz",
    "react-native-gesture-handler": "^1.10.3",
    "react-native-reanimated": "^2.0.1",
    "react-native-screens": "^2.18.1",
    "react-native-web": "~0.13.12",
    "react-navigation": "^4.4.4",
    "react-navigation-header-buttons": "^7.0.0",
    "react-navigation-stack": "^2.10.4",
    "react-redux": "^7.2.3",
    "redux": "^4.0.5"
  },
  "devDependencies": {
    "@babel/core": "^7.13.15"
  },
  "private": true
}