新項(xiàng)目中引入tab
在終端中：
cd到項(xiàng)目
ls
npm i react-native-tab-navigator --save
這樣就行了
關(guān)于TabNavigator的用法，可以參考這個(gè)
js
<TabNavigator>
<TabNavigator.Item
selected={this.state.selectedTab === 'home'}
title="Home"
renderIcon={() => <Image source={...} />}
renderSelectedIcon={() => <Image source={...} />}
badgeText="1"
onPress={() => this.setState({ selectedTab: 'home' })}>
{homeView}
</TabNavigator.Item>
<TabNavigator.Item
selected={this.state.selectedTab === 'profile'}
title="Profile"
renderIcon={() => <Image source={...} />}
renderSelectedIcon={() => <Image source={...} />}
renderBadge={() => <CustomBadgeView />}
onPress={() => this.setState({ selectedTab: 'profile' })}>
{profileView}
</TabNavigator.Item>
</TabNavigator>
