Bottom Tabs Navigator
A simple tab bar on the bottom of the screen that lets you switch between different routes. Routes are lazily initialized -- their screen components are not mounted until they are first focused.
Installation
To use this navigator, ensure that you have @react-navigation/native
and its dependencies (follow this guide), then install @react-navigation/bottom-tabs
:
- npm
- Yarn
- pnpm
npm install @react-navigation/bottom-tabs@next
yarn add @react-navigation/bottom-tabs@next
pnpm add @react-navigation/bottom-tabs@next
Usage
To use this navigator, import it from @react-navigation/bottom-tabs
:
- Static
- Dynamic
import { createBottomTabNavigator } from '@react-navigation/bottom-tabs';
const MyTabs = createBottomTabNavigator({
screens: {
Home: HomeScreen,
Profile: ProfileScreen,
},
});
import { createBottomTabNavigator } from '@react-navigation/bottom-tabs';
const Tab = createBottomTabNavigator();
function MyTabs() {
return (
<Tab.Navigator>
<Tab.Screen name="Home" component={HomeScreen} />
<Tab.Screen name="Profile" component={ProfileScreen} />
</Tab.Navigator>
);
}
For a complete usage guide see Tab Navigation.
API Definition
Props
The Tab.Navigator
component accepts following props:
id
Optional unique ID for the navigator. This can be used with navigation.getParent
to refer to this navigator in a child navigator.
initialRouteName
The name of the route to render on first load of the navigator.
screenOptions
Default options to use for the screens in the navigator.
backBehavior
This controls what happens when goBack
is called in the navigator. This includes pressing the device's back button or back gesture on Android.
It supports the following values:
firstRoute
- return to the first screen defined in the navigator (default)initialRoute
- return to initial screen passed ininitialRouteName
prop, if not passed, defaults to the first screenorder
- return to screen defined before the focused screenhistory
- return to last visited screen in the navigator; if the same screen is visited multiple times, the older entries are dropped from the historynone
- do not handle back button
detachInactiveScreens
Boolean used to indicate whether inactive screens should be detached from the view hierarchy to save memory. This enables integration with react-native-screens. Defaults to true
.
sceneContainerStyle
Style object for the component wrapping the screen content.
tabBar
Function that returns a React element to display as the tab bar.
Example:
import { View, Text, TouchableOpacity } from 'react-native';
function MyTabBar({ state, descriptors, navigation }) {
return (
<View style={{ flexDirection: 'row' }}>
{state.routes.map((route, index) => {
const { options } = descriptors[route.key];
const label =
options.tabBarLabel !== undefined
? options.tabBarLabel
: options.title !== undefined
? options.title
: route.name;
const isFocused = state.index === index;
const onPress = () => {
const event = navigation.emit({
type: 'tabPress',
target: route.key,
canPreventDefault: true,
});
if (!isFocused && !event.defaultPrevented) {
// The `merge: true` option makes sure that the params inside the tab screen are preserved
navigation.navigate({ name: route.name, merge: true });
}
};
const onLongPress = () => {
navigation.emit({
type: 'tabLongPress',
target: route.key,
});
};
return (
<TouchableOpacity
accessibilityRole="button"
accessibilityState={isFocused ? { selected: true } : {}}
accessibilityLabel={options.tabBarAccessibilityLabel}
testID={options.tabBarTestID}
onPress={onPress}
onLongPress={onLongPress}
style={{ flex: 1 }}
>
<Text style={{ color: isFocused ? '#673ab7' : '#222' }}>
{label}
</Text>
</TouchableOpacity>
);
})}
</View>
);
}
// ...
<Tab.Navigator tabBar={props => <MyTabBar {...props} />}>
{...}
</Tab.Navigator>
This example will render a basic tab bar with labels.
Note that you cannot use the useNavigation
hook inside the tabBar
since useNavigation
is only available inside screens. You get a navigation
prop for your tabBar
which you can use instead:
function MyTabBar({ navigation }) {
return (
<Button
title="Go somewhere"
onPress={() => {
// Navigate using the `navigation` prop that you received
navigation.navigate('SomeScreen');
}}
/>
);
}
Options
The following options can be used to configure the screens in the navigator. These can be specified under screenOptions
prop of Tab.navigator
or options
prop of Tab.Screen
.
title
Generic title that can be used as a fallback for headerTitle
and tabBarLabel
.
tabBarLabel
Title string of a tab displayed in the tab bar or a function that given { focused: boolean, color: string }
returns a React.Node, to display in tab bar. When undefined, scene title
is used. To hide, see tabBarShowLabel
.
tabBarShowLabel
Whether the tab label should be visible. Defaults to true
.
tabBarLabelPosition
Whether the label is shown below the icon or beside the icon.
below-icon
: the label is shown below the icon (typical for iPhones)beside-icon
the label is shown next to the icon (typical for iPad)
By default, the position is chosen automatically based on device width.
tabBarLabelStyle
Style object for the tab label.
tabBarIcon
Function that given { focused: boolean, color: string, size: number }
returns a React.Node, to display in the tab bar.
tabBarIconStyle
Style object for the tab icon.
tabBarBadge
Text to show in a badge on the tab icon. Accepts a string
or a number
.
tabBarBadgeStyle
Style for the badge on the tab icon. You can specify a background color or text color here.
tabBarAccessibilityLabel
Accessibility label for the tab button. This is read by the screen reader when the user taps the tab. It's recommended to set this if you don't have a label for the tab.
tabBarTestID
ID to locate this tab button in tests.
tabBarButton
Function which returns a React element to render as the tab bar button. It wraps the icon and label. Renders Pressable
by default.
You can specify a custom implementation here:
tabBarButton: (props) => <TouchableOpacity {...props} />;
tabBarActiveTintColor
Color for the icon and label in the active tab.
tabBarInactiveTintColor
Color for the icon and label in the inactive tabs.
tabBarActiveBackgroundColor
Background color for the active tab.
tabBarInactiveBackgroundColor
Background color for the inactive tabs.
tabBarHideOnKeyboard
Whether the tab bar is hidden when the keyboard opens. Defaults to false
.
tabBarItemStyle
Style object for the tab item container.
tabBarStyle
Style object for the tab bar. You can configure styles such as background color here.
To show your screen under the tab bar, you can set the position
style to absolute:
<Tab.Navigator
screenOptions={{
tabBarStyle: { position: 'absolute' },
}}
>
You also might need to add a bottom margin to your content if you have a absolutely positioned tab bar. React Navigation won't do it automatically.
To get the height of the bottom tab bar, you can use BottomTabBarHeightContext
with React's Context API or useBottomTabBarHeight
:
import { BottomTabBarHeightContext } from '@react-navigation/bottom-tabs';
// ...
<BottomTabBarHeightContext.Consumer>
{tabBarHeight => (
/* render something */
)}
</BottomTabBarHeightContext.Consumer>
or
import { useBottomTabBarHeight } from '@react-navigation/bottom-tabs';
// ...
const tabBarHeight = useBottomTabBarHeight();
tabBarBackground
Function which returns a React Element to use as background for the tab bar. You could render an image, a gradient, blur view etc.:
import { BlurView } from 'expo-blur';
// ...
<Tab.Navigator
screenOptions={{
tabBarStyle: { position: 'absolute' },
tabBarBackground: () => (
<BlurView tint="light" intensity={100} style={StyleSheet.absoluteFill} />
),
}}
>
When using BlurView
, make sure to set position: 'absolute'
in tabBarStyle
as well. You'd also need to use useBottomTabBarHeight()
to add a bottom padding to your content.
lazy
Whether this screens should render the first time it's accessed. Defaults to true
. Set it to false
if you want to render the screen on initial render.
unmountOnBlur
Whether this screen should be unmounted when navigating away from it. Unmounting a screen resets any local state in the screen as well as state of nested navigators in the screen. Defaults to false
.
Normally, we don't recommend enabling this prop as users don't expect their navigation history to be lost when switching tabs. If you enable this prop, please consider if this will actually provide a better experience for the user.
freezeOnBlur
Boolean indicating whether to prevent inactive screens from re-rendering. Defaults to false
.
Defaults to true
when enableFreeze()
from react-native-screens
package is run at the top of the application.
Requires react-native-screens
version >=3.16.0.
Only supported on iOS and Android.
Header related options
You can find the list of header related options here. These options can be specified under screenOptions
prop of Tab.navigator
or options
prop of Tab.Screen
. You don't have to be using @react-navigation/elements
directly to use these options, they are just documented in that page.
In addition to those, the following options are also supported in bottom tabs:
header
Custom header to use instead of the default header.
This accepts a function that returns a React Element to display as a header. The function receives an object containing the following properties as the argument:
navigation
- The navigation object for the current screen.route
- The route object for the current screen.options
- The options for the current screenlayout
- Dimensions of the screen, containsheight
andwidth
properties.
Example:
import { getHeaderTitle } from '@react-navigation/elements';
// ..
header: ({ navigation, route, options }) => {
const title = getHeaderTitle(options, route.name);
return <MyHeader title={title} style={options.headerStyle} />;
};
To set a custom header for all the screens in the navigator, you can specify this option in the screenOptions
prop of the navigator.
Specify a height
in headerStyle
If your custom header's height differs from the default header height, then you might notice glitches due to measurement being async. Explicitly specifying the height will avoid such glitches.
Example:
headerStyle: {
height: 80, // Specify the height of your custom header
};
Note that this style is not applied to the header by default since you control the styling of your custom header. If you also want to apply this style to your header, use options.headerStyle
from the props.
headerShown
Whether to show or hide the header for the screen. The header is shown by default. Setting this to false
hides the header.
Events
The navigator can emit events on certain actions. Supported events are:
tabPress
This event is fired when the user presses the tab button for the current screen in the tab bar. By default a tab press does several things:
- If the tab is not focused, tab press will focus that tab
- If the tab is already focused:
- If the screen for the tab renders a scroll view, you can use
useScrollToTop
to scroll it to top - If the screen for the tab renders a stack navigator, a
popToTop
action is performed on the stack
- If the screen for the tab renders a scroll view, you can use
To prevent the default behavior, you can call event.preventDefault
:
React.useEffect(() => {
const unsubscribe = navigation.addListener('tabPress', (e) => {
// Prevent default behavior
e.preventDefault();
// Do something manually
// ...
});
return unsubscribe;
}, [navigation]);
If you have a custom tab bar, make sure to emit this event.
tabLongPress
This event is fired when the user presses the tab button for the current screen in the tab bar for an extended period. If you have a custom tab bar, make sure to emit this event.
Example:
React.useEffect(() => {
const unsubscribe = navigation.addListener('tabLongPress', (e) => {
// Do something
});
return unsubscribe;
}, [navigation]);
Helpers
The tab navigator adds the following methods to the navigation object:
jumpTo
Navigates to an existing screen in the tab navigator. The method accepts following arguments:
name
- string - Name of the route to jump to.params
- object - Screen params to use for the destination route.
navigation.jumpTo('Profile', { owner: 'Michaś' });
Example
import { createBottomTabNavigator } from '@react-navigation/bottom-tabs';
import MaterialCommunityIcons from 'react-native-vector-icons/MaterialCommunityIcons';
const Tab = createBottomTabNavigator();
function MyTabs() {
return (
<Tab.Navigator
initialRouteName="Feed"
screenOptions={{
tabBarActiveTintColor: '#e91e63',
}}
>
<Tab.Screen
name="Feed"
component={Feed}
options={{
tabBarLabel: 'Home',
tabBarIcon: ({ color, size }) => (
<MaterialCommunityIcons name="home" color={color} size={size} />
),
}}
/>
<Tab.Screen
name="Notifications"
component={Notifications}
options={{
tabBarLabel: 'Updates',
tabBarIcon: ({ color, size }) => (
<MaterialCommunityIcons name="bell" color={color} size={size} />
),
tabBarBadge: 3,
}}
/>
<Tab.Screen
name="Profile"
component={Profile}
options={{
tabBarLabel: 'Profile',
tabBarIcon: ({ color, size }) => (
<MaterialCommunityIcons name="account" color={color} size={size} />
),
}}
/>
</Tab.Navigator>
);
}