ion-tabs

Tabs are a top level navigation component to implement a tab-based navigation. The component is a container of individual Tab components.

The ion-tabs component does not have any styling and works as a router outlet in order to handle navigation. It does not provide any UI feedback or mechanism to switch between tabs. In order to do so, an ion-tab-bar should be provided as a direct child of ion-tabs.

Both ion-tabs and ion-tab-bar can be used as standalone elements. They don’t depend on each other to work, but they are usually used together in order to implement a tab-based navigation that behaves like a native app.

The ion-tab-bar needs a slot defined in order to be projected to the right place in an ion-tabs component.

Usage

Angular

<ion-tabs>
  <ion-tab-bar slot="bottom">
    <ion-tab-button tab="schedule">
      <ion-icon name="calendar"></ion-icon>
      <ion-label>Schedule</ion-label>
      <ion-badge>6</ion-badge>
    </ion-tab-button>

    <ion-tab-button tab="speakers">
      <ion-icon name="person-circle"></ion-icon>
      <ion-label>Speakers</ion-label>
    </ion-tab-button>

    <ion-tab-button tab="map">
      <ion-icon name="map"></ion-icon>
      <ion-label>Map</ion-label>
    </ion-tab-button>

    <ion-tab-button tab="about">
      <ion-icon name="information-circle"></ion-icon>
      <ion-label>About</ion-label>
    </ion-tab-button>
  </ion-tab-bar>
</ion-tabs>

Router integration

When used with Angular's router the tab property of the ion-tab-button should be a reference to the route path.

<ion-tabs>
  <ion-tab-bar slot="bottom">
    <ion-tab-button tab="schedule">
      <ion-icon name="calendar"></ion-icon>
      <ion-label>Schedule</ion-label>
    </ion-tab-button>
  </ion-tab-bar>
</ion-tabs>

import { Routes } from '@angular/router';
import { TabsPage } from './tabs-page';

const routes: Routes = [
  {
    path: 'tabs',
    component: TabsPage,
    children: [
      {
        path: 'schedule',
        children: [
          {
            path: '',
            loadChildren: '../schedule/schedule.module#ScheduleModule',
          },
        ],
      },
      {
        path: '',
        redirectTo: '/app/tabs/schedule',
        pathMatch: 'full',
      },
    ],
  },
];

Javascript

<ion-tabs>
  <ion-tab tab="tab-schedule">
    <ion-nav></ion-nav>
  </ion-tab>

  <ion-tab tab="tab-speaker">
    <ion-nav></ion-nav>
  </ion-tab>

  <ion-tab tab="tab-map" component="page-map">
    <ion-nav></ion-nav>
  </ion-tab>

  <ion-tab tab="tab-about" component="page-about">
    <ion-nav></ion-nav>
  </ion-tab>

  <ion-tab-bar slot="bottom">
    <ion-tab-button tab="tab-schedule">
      <ion-icon name="calendar"></ion-icon>
      <ion-label>Schedule</ion-label>
      <ion-badge>6</ion-badge>
    </ion-tab-button>

    <ion-tab-button tab="tab-speaker">
      <ion-icon name="person-circle"></ion-icon>
      <ion-label>Speakers</ion-label>
    </ion-tab-button>

    <ion-tab-button tab="tab-map">
      <ion-icon name="map"></ion-icon>
      <ion-label>Map</ion-label>
    </ion-tab-button>

    <ion-tab-button tab="tab-about">
      <ion-icon name="information-circle"></ion-icon>
      <ion-label>About</ion-label>
    </ion-tab-button>
  </ion-tab-bar>
</ion-tabs>

Activating Tabs

Each ion-tab-button will activate one of the tabs when pressed. In order to link the ion-tab-button to the ion-tab container, a matching tab property should be set on each component.

<ion-tab tab="settings"> ... </ion-tab>

<ion-tab-button tab="settings"> ... </ion-tab-button>

The ion-tab-button and ion-tab above are linked by the common tab property.

The tab property identifies each tab, and it has to be unique within the ion-tabs. It's important to always set the tab property on the ion-tab and ion-tab-button, even if one component is not used.

Router integration

When used with Ionic's router (ion-router) the tab property of the ion-tab matches the component property of an ion-route.

The following route within the scope of an ion-tabs outlet:

<ion-route url="/settings-page" component="settings"></ion-route>

will match the following tab:

<ion-tab tab="settings" component="settings-component"></ion-tab>

React

import React from 'react';
import { IonTabs, IonTabBar, IonTabButton, IonIcon, IonLabel, IonBadge } from '@ionic/react';
import { calendar, personCircle, map, informationCircle } from 'ionicons/icons';

export const TabsExample: React.FC = () => (
  <IonTabs>
    <IonTabBar slot="bottom">
      <IonTabButton tab="schedule">
        <IonIcon icon={calendar} />
        <IonLabel>Schedule</IonLabel>
        <IonBadge>6</IonBadge>
      </IonTabButton>

      <IonTabButton tab="speakers">
        <IonIcon icon={personCircle} />
        <IonLabel>Speakers</IonLabel>
      </IonTabButton>

      <IonTabButton tab="map">
        <IonIcon icon={map} />
        <IonLabel>Map</IonLabel>
      </IonTabButton>

      <IonTabButton tab="about">
        <IonIcon icon={informationCircle} />
        <IonLabel>About</IonLabel>
      </IonTabButton>
    </IonTabBar>
  </IonTabs>
);

Stencil

import { Component, h } from '@stencil/core';

@Component({
  tag: 'tabs-example',
  styleUrl: 'tabs-example.css',
})
export class TabsExample {
  render() {
    return [
      <ion-tabs>
        <ion-tab tab="tab-schedule">
          <ion-nav></ion-nav>
        </ion-tab>

        <ion-tab tab="tab-speaker">
          <ion-nav></ion-nav>
        </ion-tab>

        <ion-tab tab="tab-map" component="page-map">
          <ion-nav></ion-nav>
        </ion-tab>

        <ion-tab tab="tab-about" component="page-about">
          <ion-nav></ion-nav>
        </ion-tab>

        <ion-tab-bar slot="bottom">
          <ion-tab-button tab="tab-schedule">
            <ion-icon name="calendar"></ion-icon>
            <ion-label>Schedule</ion-label>
            <ion-badge>6</ion-badge>
          </ion-tab-button>

          <ion-tab-button tab="tab-speaker">
            <ion-icon name="person-circle"></ion-icon>
            <ion-label>Speakers</ion-label>
          </ion-tab-button>

          <ion-tab-button tab="tab-map">
            <ion-icon name="map"></ion-icon>
            <ion-label>Map</ion-label>
          </ion-tab-button>

          <ion-tab-button tab="tab-about">
            <ion-icon name="information-circle"></ion-icon>
            <ion-label>About</ion-label>
          </ion-tab-button>
        </ion-tab-bar>
      </ion-tabs>,
    ];
  }
}

Activating Tabs

Each ion-tab-button will activate one of the tabs when pressed. In order to link the ion-tab-button to the ion-tab container, a matching tab property should be set on each component.

<ion-tab tab="settings">
  ...
</ion-tab>

<ion-tab-button tab="settings">
  ...
</ion-tab-button>

The ion-tab-button and ion-tab above are linked by the common tab property.

The tab property identifies each tab, and it has to be unique within the ion-tabs. It's important to always set the tab property on the ion-tab and ion-tab-button, even if one component is not used.

Router integration

When used with Ionic's router (ion-router) the tab property of the ion-tab matches the component property of an ion-route.

The following route within the scope of an ion-tabs outlet:

<ion-route url="/settings-page" component="settings"></ion-route>

will match the following tab:

<ion-tab tab="settings" component="settings-component"></ion-tab>

Vue

Tabs.vue

<template>
  <ion-page>
    <ion-tabs @ionTabsWillChange="beforeTabChange" @ionTabsDidChange="afterTabChange">
      <ion-tab-bar slot="bottom">
        <ion-tab-button tab="schedule" href="/tabs/schedule">
          <ion-icon :icon="calendar"></ion-icon>
          <ion-label>Schedule</ion-label>
          <ion-badge>6</ion-badge>
        </ion-tab-button>

        <ion-tab-button tab="speakers" href="/tabs/speakers">
          <ion-icon :icon="personCircle"></ion-icon>
          <ion-label>Speakers</ion-label>
        </ion-tab-button>
      </ion-tab-bar>
    </ion-tabs>
  </ion-page>
</template>

<script>
  import { defineComponent } from 'vue';
  import { IonIcon, IonLabel, IonPage, IonTabBar, IonTabButton, IonTabs } from '@ionic/vue';
  import { calendar, personCircle } from 'ionicons/icons';

  export default defineComponent({
    components: {
      IonIcon,
      IonLabel,
      IonPage,
      IonTabBar,
      IonTabButton,
      IonTabs,
    },
    setup() {
      const beforeTabChange = () => {
        // do something before tab change
      };
      const afterTabChange = () => {
        // do something after tab change
      };
      return {
        calendar,
        personCircle,
        beforeTabChange,
        afterTabChange,
      };
    },
  });
</script>

Schedule.vue

<template>
  <ion-page>
    <ion-header>
      <ion-toolbar>
        <ion-title>Schedule</ion-title>
      </ion-toolbar>
    </ion-header>

    <ion-content class="ion-padding">Schedule Tab</ion-content>
  </ion-page>
</template>

<script>
  import { defineComponent } from 'vue';
  import { IonContent, IonHeader, IonPage, IonTitle, IonToolbar } from '@ionic/vue';

  export default defineComponent({
    components: { IonContent, IonHeader, IonPage, IonTitle, IonToolbar },
  });
</script>

Speakers.vue

<template>
  <ion-page>
    <ion-header>
      <ion-toolbar>
        <ion-title>Speakers</ion-title>
      </ion-toolbar>
    </ion-header>

    <ion-content class="ion-padding">Speakers Tab</ion-content>
  </ion-page>
</template>

<script>
  import { defineComponent } from 'vue';
  import { IonContent, IonHeader, IonPage, IonTitle, IonToolbar } from '@ionic/vue';

  export default defineComponent({
    components: { IonContent, IonHeader, IonPage, IonTitle, IonToolbar },
  });
</script>

Properties

No properties available for this component.

Events

Name	Description
ionTabsDidChange	ナビゲーションが新しいコンポーネントに遷移し終わったときに発行されます。
ionTabsWillChange	ナビゲーションが新しいコンポーネントに移行しようとするときに発行されます。

Methods

getSelected

Description	現在選択されているタブを取得します。
Signature	getSelected() => Promise<string ｜ undefined>

getTab

Description	タブの tab プロパティの値、または要素の参照によって特定のタブを取得します。
Signature	getTab(tab: string ｜ HTMLIonTabElement) => Promise<HTMLIonTabElement ｜ undefined>

select

Description	タブの tab プロパティの値、または要素の参照によってタブを選択します。
Signature	select(tab: string ｜ HTMLIonTabElement) => Promise<boolean>

CSS Shadow Parts

No CSS shadow parts available for this component.

CSS Custom Properties

No CSS custom properties available for this component.

Slots

Name	Description
``	slotがない状態で提供される場合、コンテンツは名前付きslotの間に配置されます。
bottom	コンテンツは画面下部に配置されます。
top	コンテンツは画面上部に配置されます。