| id | material-top-tab-navigator |
|---|---|
| title | Material Top Tabs Navigator |
| sidebar_label | Material Top Tabs |
A material-design themed tab bar on the top of the screen that lets you switch between different routes by tapping the tabs or swiping horizontally. Transitions are animated by default. Screen components for each route are mounted immediately.
This wraps react-native-tab-view.
To use this navigator, ensure that you have @react-navigation/native and its dependencies (follow this guide), then install @react-navigation/material-top-tabs:
npm install @react-navigation/material-top-tabs react-native-tab-viewYou also need to install react-native-pager-view.
If you have a Expo managed project, in your project directory, run:
expo install react-native-pager-viewIf you have a bare React Native project, in your project directory, run:
npm install react-native-pager-viewTo use this tab navigator, import it from @react-navigation/material-top-tabs:
import { createMaterialTopTabNavigator } from '@react-navigation/material-top-tabs';
const Tab = createMaterialTopTabNavigator();
function MyTabs() {
return (
<Tab.Navigator>
<Tab.Screen name="Home" component={HomeScreen} />
<Tab.Screen name="Settings" component={SettingsScreen} />
</Tab.Navigator>
);
}For a complete usage guide please visit Tab Navigation
The Tab.Navigator component accepts following props:
The name of the route to render on first load of the navigator.
Default options to use for the screens in the navigator.
This controls how going back in the navigator is handled. This includes when the back button is pressed/back gesture is performed, or goBack is called.
It supports the following values:
firstRoute- return to the first tab (default)initialRoute- return to initial taborder- return to previous tab (in the order they are shown in the tab bar)history- return to last visited tabnone- do not handle back button
Position of the tab bar in the tab view. Possible values are 'top' and 'bottom'. Defaults to 'top'.
String indicating whether the keyboard gets dismissed in response to a drag gesture. Possible values are:
'auto'(default): the keyboard is dismissed when the index changes.'on-drag': the keyboard is dismissed when a drag begins.'none': drags do not dismiss the keyboard.
Object containing the initial height and width of the screens. Passing this will improve the initial rendering performance. For most apps, this is a good default:
{ width: Dimensions.get('window').width }}Style to apply to the view wrapping each screen. You can pass this to override some default styles such as overflow clipping.
Style to apply to the tab view container.
Function that returns a React element to display as the tab bar.
Example:
import { Animated, View, TouchableOpacity } from 'react-native';
function MyTabBar({ state, descriptors, navigation, position }) {
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,
});
};
const inputRange = state.routes.map((_, i) => i);
const opacity = position.interpolate({
inputRange,
outputRange: inputRange.map(i => (i === index ? 1 : 0)),
});
return (
<TouchableOpacity
accessibilityRole="button"
accessibilityState={isFocused ? { selected: true } : {}}
accessibilityLabel={options.tabBarAccessibilityLabel}
testID={options.tabBarTestID}
onPress={onPress}
onLongPress={onLongPress}
style={{ flex: 1 }}
>
<Animated.Text style={{ opacity }}>
{label}
</Animated.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');
}}
/>
);
}The following options can be used to configure the screens in the navigator:
Example:
<Tab.Navigator
screenOptions={{
tabBarLabelStyle: { fontSize: 12 },
tabBarItemStyle: { width: 100 },
tabBarStyle: { backgroundColor: 'powderblue' },
}}
>
{/* ... */}
</Tab.Navigator>Generic title that can be used as a fallback for headerTitle and 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 option.
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.
Whether label font should scale to respect Text Size accessibility settings.
Whether the tab label should be visible. Defaults to true.
Function that given { focused: boolean, color: string } returns a React.Node, to display in the tab bar.
Whether the tab icon should be visible. Defaults to false.
Function that returns a React element to use as a badge for the tab.
Function that returns a React element as the tab bar indicator.
Style object for the tab bar indicator.
Style object for the view containing the tab bar indicator.
ID to locate this tab button in tests.
Color for the icon and label in the active tab.
Color for the icon and label in the inactive tabs.
Color for material ripple (Android >= 5.0 only).
Opacity for pressed tab (iOS and Android < 5.0 only).
Boolean indicating whether the tab bar bounces when overscrolling.
Boolean indicating whether to make the tab bar scrollable.
If you set this to true, you should also specify a width in tabBarItemStyle to improve the performance of initial render.
Style object for the tab icon container.
Style object for the tab label.
Style object for the individual tab items.
Style object for the view containing the tab items.
Style object for the the tab bar.
Boolean indicating whether to enable swipe gestures. Swipe gestures are enabled by default. Passing false will disable swipe gestures, but the user can still switch tabs by pressing the tab bar.
Whether this screen should be lazily rendered. When this is set to true, the screen will be rendered as it comes into the viewport. By default all screens are rendered to provide a smoother swipe experience. But you might want to defer the rendering of screens out of the viewport until the user sees them. To enable lazy rendering for this screen, set lazy to true.
When you enable lazy, the lazy loaded screens will usually take some time to render when they come into the viewport. You can use the lazyPlaceholder prop to customize what the user sees during this short period.
When lazy is enabled, you can specify how many adjacent screens should be preloaded in advance with this prop. This value defaults to 0 which means lazy pages are loaded as they come into the viewport.
Function that returns a React element to render if this screen hasn't been rendered yet. The lazy option also needs to be enabled for this to work.
This view is usually only shown for a split second. Keep it lightweight.
By default, this renders null.
The navigator can emit events on certain actions. Supported events are:
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
useScrollToTopto scroll it to top - If the screen for the tab renders a stack navigator, a
popToTopaction 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]);This event is fired when the user presses the tab button for the current screen in the tab bar for an extended period.
Example:
React.useEffect(() => {
const unsubscribe = navigation.addListener('tabLongPress', e => {
// Do something
});
return unsubscribe;
}, [navigation]);The tab navigator adds the following methods to the navigation prop:
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 pass to the destination route.
navigation.jumpTo('Profile', { name: 'Michaś' });import { createMaterialTopTabNavigator } from '@react-navigation/material-top-tabs';
const Tab = createMaterialTopTabNavigator();
function MyTabs() {
return (
<Tab.Navigator
initialRouteName="Feed"
screenOptions={{
tabBarActiveTintColor: '#e91e63',
tabBarLabelStyle: { fontSize: 12 },
tabBarStyle: { backgroundColor: 'powderblue' },
}}
>
<Tab.Screen
name="Feed"
component={Feed}
options={{ tabBarLabel: 'Home' }}
/>
<Tab.Screen
name="Notifications"
component={Notifications}
options={{ tabBarLabel: 'Updates' }}
/>
<Tab.Screen
name="Profile"
component={Profile}
options={{ tabBarLabel: 'Profile' }}
/>
</Tab.Navigator>
);
}