npm install --save react-native-vector-icons

ios

将node_modules/react-native-vector-icons/Fonts的文件夹里的内容复制到项目的ios/Fonts文件夹下

 选择Ios/Fonts/里的内容 

点开Ifon.plist文件，并在右侧添加一项"Fonts provided by application" 

 在Fonts provided by application 点添加按钮添加内容并填写ttf文件名如下

<key>UIAppFonts</key>
<array>
  <string>AntDesign.ttf</string>
  <string>Entypo.ttf</string>
  <string>EvilIcons.ttf</string>
  <string>Feather.ttf</string>
  <string>FontAwesome.ttf</string>
  <string>FontAwesome5_Brands.ttf</string>
  <string>FontAwesome5_Regular.ttf</string>
  <string>FontAwesome5_Solid.ttf</string>
  <string>Foundation.ttf</string>
  <string>Ionicons.ttf</string>
  <string>MaterialIcons.ttf</string>
  <string>MaterialCommunityIcons.ttf</string>
  <string>SimpleLineIcons.ttf</string>
  <string>Octicons.ttf</string>
  <string>Zocial.ttf</string>
  <string>Fontisto.ttf</string>
</array>

在根目录里新建react-native.config.js 文件，添加内容如下

android

推荐写法
在android/app/build.gradle  文件里添加内容

apply from: "../../node_modules/react-native-vector-icons/fonts.gradle" 

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