How to setup Top tabs with expo-router?

[bhatvikrant]

How to set up Top tabs with expo-router? A code snippet or docs will be helpful.
A way without using react-navigation directly would be great.

[Hudson-AmalembaL]

@bhatvikrant Did you get a solution for this.

[bhatvikrant]

Yes, I made use of react-native-tab-view package.

On Tue, 28 Feb 2023 at 2:54 PM, Hudson Luseno ***@***.***> wrote: @bhatvikrant <https://github.com/bhatvikrant> Did you get a solution for this. — Reply to this email directly, view it on GitHub <#294 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AMDCPMN5ULT6DKXZGP5WQYDWZW73NANCNFSM6AAAAAAVANQYYM> . You are receiving this because you were mentioned.Message ID: ***@***.***>

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[Hudson-AmalembaL]

Thanks. Let me try that out.

[ziongh]

Did you manage to use the directory structure to define your routes? Or did you use the library (react-native-tab-view) defining manually each page?

Maybe it is possible to use the import { Navigator } from 'expo-router'; together with @react-navigation/material-top-tabs or react-native-tab-view to create a custom Tab.

Or maybe I've missed something on the documentation about the import { Tabs } from 'expo-router';, and there is some option to make it top instead of bottom.

[chriszs]

Here's what I'm doing, based on this example, but updated a little:

import type {ParamListBase, TabNavigationState} from '@react-navigation/native';
import {createMaterialTopTabNavigator} from '@react-navigation/material-top-tabs';
import type {
  MaterialTopTabNavigationOptions,
  MaterialTopTabNavigationEventMap,
} from '@react-navigation/material-top-tabs';
import {withLayoutContext} from 'expo-router';

const {Navigator} = createMaterialTopTabNavigator();

export const MaterialTopTabs = withLayoutContext<
  MaterialTopTabNavigationOptions,
  typeof Navigator,
  TabNavigationState<ParamListBase>,
  MaterialTopTabNavigationEventMap
>(Navigator);

Have not tested yet, but I think that's approximately right.

[XavierVilaRubio]

Hi Chris, I've used it and works flawless, the only thing is if I want to hide a route, do you know how can I do it? With expo-router Tabs is very easy setting the href to null, but I haven't been able to figure out how to do it with the TobTabs...

[chriszs]

No idea! If someone figures it out, let us know.

[Aftab3gamersden]

How can I make the Top Tab Scroll upwards whenever I scroll up on the screen.

For example: The YouTube Channel Screen has a header, then below it a similar Top Tab Navigation Bar and then below the bar the content according to the tab of Top Tab Nav. When u scroll on that screen the content and the top tab and the header all move up

[smaccoun]

How can I make the Top Tab Scroll upwards whenever I scroll up on the screen.

For example: The YouTube Channel Screen has a header, then below it a similar Top Tab Navigation Bar and then below the bar the content according to the tab of Top Tab Nav. When u scroll on that screen the content and the top tab and the header all move up

Also facing this issue. If the tabs are on say the middle of the screen, and wrapped in an outer scroll view, the scrollview seems to break for content under the tabs

[GoldAndLink]

Take a look to this project, it's from @EvanBacon himself https://github.com/EvanBacon/expo-router-top-tabs

[iam-rohid]

Hi everyone. I've created a blog on how you can use Material Top Tabs in expo-router
https://reactnativepro.dev/posts/expo-router-top-tabs

[Barney4242]

I have a weird situation. The tabs are visible but the labels on them are not. Maybe you have an idea?
"@react-navigation/native": "^6.0.2",
"@react-navigation/material-top-tabs": "^6.6.14",
"react-native-tab-view": "^4.0.1",
"react-native-pager-view": "6.3.0"

[marvin0430]

@Barney4242 I'm also facing this issue, the labels aren't showing up. Did you figure out how to fix it?

[Barney4242]

"react-native-tab-view": "^4.0.1" is not compatible with @react-navigation/native v6.x even then using without @react-navigation/material-top-tabs

I downgraded to "react-native-tab-view": "^3.5.2" and everything seems to be working

[Matheus8174]

I've been looking up a way to place the tabs in the main layout file and i found it, if anybody knows a better way, let me know.

import { Stack } from "expo-router"

function RootLayout() {
  return (
    <Stack>
      <Stack.Screen redirect name="index"/>
      <Stack.Screen name="(tabs)"/>
    </Stack>
  )
}

export default RootLayout

[MartinHarkins]

Got an implementation that allows us to exclude a tab:

import {
  createMaterialTopTabNavigator,
  MaterialTopTabBar,
  MaterialTopTabNavigationEventMap,
  MaterialTopTabNavigationOptions,
} from '@react-navigation/material-top-tabs'
import { ParamListBase, TabNavigationState } from '@react-navigation/routers'
import { withLayoutContext } from 'expo-router'

const { Navigator } = createMaterialTopTabNavigator()

export const MaterialTopTabs = withLayoutContext<
  MaterialTopTabNavigationOptions & { excludeScreens?: string[] },
  typeof Navigator,
  TabNavigationState<ParamListBase>,
  MaterialTopTabNavigationEventMap
>(Navigator, (options) => {
  return options.filter((o) => !o.name || !o.options?.excludeScreens?.includes(o.name))
})

export type TopTabsProps = Omit<Parameters<typeof MaterialTopTabs>[0], 'screenOptions'> & {
  screenOptions?: MaterialTopTabNavigationOptions & { excludeScreens?: string[] }
}

export function excludeScreensAndAdjustIndex(
  allRouteNames: string[],
  excludeScreens: string[],
  requestedIndex: number,
) {
  // routeNames = [screen1, screen2, screen3, screen4, screen5]
  // index = 0, 1, 2, 3, 4
  // given excludedScreens = [screen2, screen4]
  // iteration 1: indexMap = { 0: 0 }
  // iteration 2: indexMap = { 0: 0, 1: 0 }
  // iteration 3: indexMap = { 0: 0, 1: 0, 2: 1 }
  // iteration 4: indexMap = { 0: 0, 1: 0, 2: 1, 3: 1 }
  // iteration 5: indexMap = { 0: 0, 1: 0, 2: 1, 3: 1, 4: 2 }
  // though indexMap 1 and 3 should never be called upon as their corresponding tabs aren't accessible through the interface
  const indexMap: Record<number, number> = {}
  let prevIndex = 0
  const routeNames = allRouteNames.filter((n, i) => {
    indexMap[i] = prevIndex
    const isExcluded = excludeScreens.includes(n)
    if (isExcluded) {
    } else {
      prevIndex += 1
    }
    return !isExcluded
  })

  return {
    routeNames,
    index: indexMap[requestedIndex],
  }
}
export function TopTabs({ ...props }: TopTabsProps) {
  const excludeScreens = typeof props.screenOptions === 'object' ? props.screenOptions.excludeScreens : undefined

  return (
    <MaterialTopTabs
      tabBar={({ state, descriptors, ...tabBarProps }) => {
        if (!excludeScreens || excludeScreens.length === 0) {
          return <MaterialTopTabBar state={state} descriptors={descriptors} {...tabBarProps} />
        }

        const { index, routeNames } = excludeScreensAndAdjustIndex(state.routeNames, excludeScreens, state.index)
        const routes = state.routes.filter((r) => !excludeScreens.includes(r.name))

        const stateWithoutExcludedScreens = {
          ...state,
          index,
          routeNames,
          routes,
        }

        return <MaterialTopTabBar state={stateWithoutExcludedScreens} descriptors={descriptors} {...tabBarProps} />
      }}
      {...props}
    />
  )
}

usage:

export default function MyLayout() {
  return (<TopTabs screenOptions={{ excludeScreens: ['screen-I-want-to-exclude'] }} />)
}

That's with expo-router 3.4

Edited: update state index. Though it's only a partial solution. Ideally the index would be recalculated based on the original index value of the tab minus each tab removed that was there prior (so something like previousIndex - tabsRemoved)

Edit 2: actually calculate index as per:

  // routeNames = [screen1, screen2, screen3, screen4, screen5]
  // index = 0, 1, 2, 3, 4
  // given excludedScreens = [screen2, screen4]
  // iteration 1: indexMap = { 0: 0 }
  // iteration 2: indexMap = { 0: 0, 1: 0 }
  // iteration 3: indexMap = { 0: 0, 1: 0, 2: 1 }
  // iteration 4: indexMap = { 0: 0, 1: 0, 2: 1, 3: 1 }
  // iteration 5: indexMap = { 0: 0, 1: 0, 2: 1, 3: 1, 4: 2 }
  // though indexMap 1 and 3 should never be called upon as their corresponding tabs aren't accessible through the interface

[ReedYu]

Is there any way to implement dynamic routing?

[ReedYu]

Each tab points to the same screen or component, but the parameters are different.

[EUGinsane]

At first, following this article https://reactnativepro.dev/posts/expo-router-top-tabs from @iam-rohid works, but after struggling a lot of time tweaking it to support hidden tabs, all possible solution is just hacking to make it disappear on the UI, but behind the scene it still renders, you have to use lazy prop along. I decided to stop using it with expo-router, just pure react-native-tab-view for now, you will have to implement the programmatic navigation your own and also useFocusEffect from expo to correctly analytics track the screen,...

[abdul-wajid-afridi]

i has lots of issue with @react-navigation/native then it give us error of couldn't register the navigator have you wrapped your app with 'navigationContainer'
This happens with multiple copies of react-navigation packages installed

[abdul-wajid-afridi]

I will share code later with you

…

On Sat, 9 Nov 2024, 6:50 pm Peter Arkhipov, ***@***.***> wrote: I have a weird situation. The tabs are visible but the labels on them are not. Maybe you have an idea? ***@***.***/native": "^6.0.2", ***@***.***/material-top-tabs": "^6.6.14", "react-native-tab-view": "^4.0.1", "react-native-pager-view": "6.3.0" — Reply to this email directly, view it on GitHub <#294 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/APNJUSALRITMPBABZQR65Q3Z7YHI3AVCNFSM6AAAAAAVANQYYOVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTCMJZGY4DSMI> . You are receiving this because you commented.Message ID: ***@***.***>

[abdul-wajid-afridi]

I think it has lots of compatibility issues. i would suggest you to use components for the top-tab-navigation as i have also used that import { StyleSheet, Text, View, StatusBar } from "react-native"; import { NavigationContainer } from ***@***.***/native"; import { createMaterialTopTabNavigator } from ***@***.***/material-top-tabs"; import { Tabs } from "expo-router"; import AboutPage from "./About"; import ContactPage from "./Contact"; import LandingPage from "."; import LoginPage from "./Login"; import PrivacyPage from "./Privacy"; import TermsPage from "./Terms"; const TopTabs = createMaterialTopTabNavigator(); const RootLayout = () => { return ( <NavigationContainer> <TopTabs.Navigator> <TopTabs.Screen component={LandingPage} name="index" /> <TopTabs.Screen component={ContactPage} name="Contact" /> <TopTabs.Screen component={LoginPage} name="Login" /> <TopTabs.Screen component={PrivacyPage} name="Privacy" /> <TopTabs.Screen component={TermsPage} name="Terms" /> </TopTabs.Navigator> </NavigationContainer> ); }; export default RootLayout; On Sat, Nov 9, 2024 at 6:58 PM Abdul Wajid Afridi ***@***.***> wrote:

…

I will share code later with you On Sat, 9 Nov 2024, 6:50 pm Peter Arkhipov, ***@***.***> wrote: > I have a weird situation. The tabs are visible but the labels on them are > not. Maybe you have an idea? > ***@***.***/native": "^6.0.2", > ***@***.***/material-top-tabs": "^6.6.14", > "react-native-tab-view": "^4.0.1", > "react-native-pager-view": "6.3.0" > > — > Reply to this email directly, view it on GitHub > <#294 (reply in thread)>, > or unsubscribe > <https://github.com/notifications/unsubscribe-auth/APNJUSALRITMPBABZQR65Q3Z7YHI3AVCNFSM6AAAAAAVANQYYOVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTCMJZGY4DSMI> > . > You are receiving this because you commented.Message ID: > ***@***.***> >

[Barney4242]

Just for the information:
"react-native-tab-view": "^4.0.1" is not compatible with @react-navigation/native v6.x even then using without @react-navigation/material-top-tabs

I downgraded to "react-native-tab-view": "^3.5.2" and everything seems to be working

[abdul-wajid-afridi]

So i think you can stick with old versions for now and then upgrade to latest when its solved

…

On Mon, 11 Nov 2024, 3:52 pm Peter Arkhipov, ***@***.***> wrote: Just for the information: "react-native-tab-view": "^4.0.1" is not compatible with @react-navigation/native v6.x even then using without @react-navigation/material-top-tabs I downgraded to "react-native-tab-view": "^3.5.2" and everything seems to be working — Reply to this email directly, view it on GitHub <#294 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/APNJUSBBXXBGTAIAB7UDKZT2ACEAFAVCNFSM6AAAAAAVANQYYOVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTCMRRGMZTAMA> . You are receiving this because you commented.Message ID: ***@***.***>