TabNavigator #

Used to easily set up a screen with several tabs with a TabRouter.

class MyHomeScreen extends React.Component {
  static navigationOptions = {
    tabBarLabel: 'Home',
    // Note: By default the icon is only shown on iOS. Search the showIcon option below.
    tabBarIcon: ({ tintColor }) => (
      <Image
        source={require('./chats-icon.png')}
        style={[styles.icon, {tintColor: tintColor}]}
      />
    ),
  };

  render() {
    return (
      <Button
        onPress={() => this.props.navigation.navigate('Notifications')}
        title="Go to notifications"
      />
    );
  }
}

class MyNotificationsScreen extends React.Component {
  static navigationOptions = {
    tabBarLabel: 'Notifications',
    tabBarIcon: ({ tintColor }) => (
      <Image
        source={require('./notif-icon.png')}
        style={[styles.icon, {tintColor: tintColor}]}
      />
    ),
  };

  render() {
    return (
      <Button
        onPress={() => this.props.navigation.goBack()}
        title="Go back home"
      />
    );
  }
}

const styles = StyleSheet.create({
  icon: {
    width: 26,
    height: 26,
  },
});

const MyApp = TabNavigator({
  Home: {
    screen: MyHomeScreen,
  },
  Notifications: {
    screen: MyNotificationsScreen,
  },
}, {
  tabBarOptions: {
    activeTintColor: '#e91e63',
  },
});

API Definition #

TabNavigator(RouteConfigs, TabNavigatorConfig)

RouteConfigs #

The route configs object is a mapping from route name to a route config, which tells the navigator what to present for that route, see example from StackNavigator.

TabNavigatorConfig #

  • tabBarComponent - component to use as the tab bar, e.g. TabBarBottom (this is the default on iOS), TabBarTop (this is the default on Android)
  • tabBarPosition - position of the tab bar, can be 'top' or 'bottom'
  • swipeEnabled - whether to allow swiping between tabs
  • animationEnabled - whether to animate when changing tabs
  • lazy - whether to lazily render tabs as needed as opposed to rendering them upfront
  • tabBarOptions - configure the tab bar, see below.

Several options get passed to the underlying router to modify navigation logic:

  • initialRouteName - The routeName for the initial tab route when first loading
  • order - Array of routeNames which defines the order of the tabs
  • paths - Provide a mapping of routeName to path config, which overrides the paths set in the routeConfigs.
  • backBehavior - Should the back button cause a tab switch to the initial tab? If yes, set to initialRoute, otherwise none. Defaults to initialRoute behavior.

tabBarOptions for TabBarBottom (default tab bar on iOS) #

  • activeTintColor - label and icon color of the active tab
  • activeBackgroundColor - background color of the active tab
  • inactiveTintColor - label and icon color of the inactive tab
  • inactiveBackgroundColor - background color of the inactive tab
  • showLabel - whether to show label for tab, default is true
  • style - style object for the tab bar
  • labelStyle - style object for the tab label

Example:

tabBarOptions: {
  activeTintColor: '#e91e63',
  labelStyle: {
    fontSize: 12,
  },
  style: {
    backgroundColor: 'blue',
  },
}

tabBarOptions for TabBarTop (default tab bar on Android) #

  • activeTintColor - label and icon color of the active tab
  • inactiveTintColor - label and icon color of the inactive tab
  • showIcon - whether to show icon for tab, default is false
  • showLabel - whether to show label for tab, default is true
  • upperCaseLabel - whether to make label uppercase, default is true
  • pressColor - color for material ripple (Android >= 5.0 only)
  • pressOpacity - opacity for pressed tab (iOS and Android < 5.0 only)
  • scrollEnabled - whether to enable scrollable tabs
  • tabStyle - style object for the tab
  • indicatorStyle - style object for the tab indicator (line at the bottom of the tab)
  • labelStyle - style object for the tab label
  • iconStyle - style object for the tab icon
  • style - style object for the tab bar

Example:

tabBarOptions: {
  labelStyle: {
    fontSize: 12,
  },
  style: {
    backgroundColor: 'blue',
  },
}

Screen Navigation Options #

title #

Generic title that can be used as a fallback for headerTitle and tabBarLabel

tabBarVisible #

True or false to show or hide the tab bar, if not set then defaults to true

tabBarIcon #

React Element or a function that given { focused: boolean, tintColor: string } returns a React.Element, to display in tab bar

tabBarLabel #

Title string of a tab displayed in the tab bar or React Element or a function that given { focused: boolean, tintColor: string } returns a React.Element, to display in tab bar. When undefined, scene title is used. To hide, see tabBarOptions.showLabel in the previous section.

The navigator component created by TabNavigator(...) takes the following props:

  • screenProps - Pass down extra options to child screens and navigation options, for example:
const TabNav = TabNavigator({
  // config
});

<TabNav
  screenProps={/* this prop will get passed to the screen components as this.props.screenProps */}
/>

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