RN常用组件

1.走马灯

　　react-native-marquee-ab

2.标签导航器

　　react-native-tab-Navigator

3.icon图标库

　　react-native-vector-icons

4.自适应字体库

　　react-native-scale-size

5.页面跳转路由

　　react-native-router-flux

6.验证码倒计时

　　react-native-smscode-count-down

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