npm install react-native-pure-tabbar --save
<TabBar>
<TabBar.Item
selected={true}
title="tab1"
badge="1"
renderIcon={selected => {
}}
onPress={() => {}}
/>
<TabBar.Item
selected={true}
title="tab1"
badge="1"
renderIcon={selected => {
}}
onPress={() => {}}
/>
</TabBar>