npm package: @knoxzin1/react-native-scrollable-tabview
Description: ## Add it to your project
Author: Valdio Veliu
Latest version: 0.8.13

## react-native-scrollable-tabview

## Add it to your project

### Install

Run `npm install @knoxzin1/react-native-scrollable-tabview --save`

OR `yarn add @knoxzin1/react-native-scrollable-tabview`

### Import

`import { ScrollableTabView, DefaultTabBar, ScrollableTabBar, } from '@knoxzin1/react-native-scrollable-tabview'`

## Demo

| ![Screenshot](https://github.com/valdio/react-native-scrollable-tabview/blob/master/demo_images/demo-fb.gif) | ![Screenshot](https://github.com/valdio/react-native-scrollable-tabview/blob/master/demo_images/scrollable_example.mov.gif) | ![Screenshot](https://github.com/valdio/react-native-scrollable-tabview/blob/master/demo_images/collapsible_demo.gif) |
| ------------------------------------------------------------------------------------------------------------ | --------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------- |


## Basic usage

```javascript
import { ScrollableTabView } from "@knoxzin1/react-native-scrollable-tabview";

export default class App extends Component {
  render() {
    return (
      <ScrollableTabView>
        <ReactPage tabLabel="React" />
        <FlowPage tabLabel="Flow" />
        <JestPage tabLabel="Jest" />
      </ScrollableTabView>
    );
  }
}
```

## Injecting a custom tab bar

Suppose we had a custom tab bar called `CustomTabBar`, we would inject
it into our `ScrollableTabView` like this:

```javascript
import {ScrollableTabView} from '@knoxzin1/react-native-scrollable-tabview'
import CustomTabBar from './CustomTabBar';

export default class App extends Component {
  render() {
    return (
      <ScrollableTabView renderTabBar={() => <CustomTabBar someProp={'here'} />}>
        <ReactPage tabLabel="React" />
        <FlowPage tabLabel="Flow" />
        <JestPage tabLabel="Jest" />
      </ScrollableTabView>
    );
  }
});``
```

To start you can just copy [DefaultTabBar](https://github.com/skv-headless/react-native-scrollable-tab-view/blob/master/DefaultTabBar.js).

## Changing between tabs

You can change tabs programmatically. Just use `goToPage` method.

```javascript
import { ScrollableTabView } from "@knoxzin1/react-native-scrollable-tabview";

export default class App extends Component {
  render() {
    return (
      <ScrollableTabView
        renderTabBar={() => <DefaultTabBar />}
        ref={tabView => {
          this.tabView = tabView;
        }}
      >
        <Text tabLabel="Tab #1">My</Text>
        <Text tabLabel="Tab #2">favorite</Text>
        <Text tabLabel="Tab #3">project</Text>
        <TouchableOpacity
          tabLabel="Back"
          onPress={() => this.tabView.goToPage(0)}
        >
          <Text>Lets go back!</Text>
        </TouchableOpacity>
      </ScrollableTabView>
    );
  }
}
```

## Examples

[Example APP](https://github.com/valdio/react-native-scrollable-tabview/tree/master/examples/TestApp).

## Props

- **`renderTabBar`** _(Function:ReactComponent)_ - accept 1 argument `props` and should return a component to use as
  the tab bar. The component has `goToPage`, `tabs`, `activeTab` and
  `ref` added to the props, and should implement `setAnimationValue` to
  be able to animate itself along with the tab content. You can manually pass the `props` to the TabBar component.
- **`tabBarPosition`** _(String)_ Defaults to `"top"`.
  - `"bottom"` to position the tab bar below content.
  - `"overlayTop"` or `"overlayBottom"` for a semitransparent tab bar that overlays content. Custom tab bars must consume a style prop on their outer element to support this feature: `style={this.props.style}`.
- **`onChangeTab`** _(Function)_ - function to call when tab changes, should accept 1 argument which is an Object containing two keys: `i`: the index of the tab that is selected, `ref`: the ref of the tab that is selected
- **`onScroll`** _(Function)_ - function to call when the pages are sliding, should accept 1 argument which is an Float number representing the page position in the slide frame.
- **`locked`** _(Bool)_ - disables horizontal dragging to scroll between tabs, default is false.
- **`initialPage`** _(Integer)_ - the index of the initially selected tab, defaults to 0 === first tab.
- **`page`** _(Integer)_ - set selected tab(can be buggy see [#126](https://github.com/brentvatne/react-native-scrollable-tab-view/issues/126)
- **`children`** _(ReactComponents)_ - each top-level child component should have a `tabLabel` prop that can be used by the tab bar component to render out the labels. The default tab bar expects it to be a string, but you can use anything you want if you make a custom tab bar.
- **`tabBarUnderlineStyle`** _([View.propTypes.style](https://facebook.github.io/react-native/docs/view.html#style))_ - style of the default tab bar's underline.
- **`tabBarBackgroundColor`** _(String)_ - color of the default tab bar's background, defaults to `white`
- **`tabBarActiveTextColor`** _(String)_ - color of the default tab bar's text when active, defaults to `navy`
- **`tabBarInactiveTextColor`** _(String)_ - color of the default tab bar's text when inactive, defaults to `black`
- **`tabBarTextStyle`** _(Object)_ - Additional styles to the tab bar's text. Example: `{fontFamily: 'Roboto', fontSize: 15}`
- **`style`** _([View.propTypes.style](https://facebook.github.io/react-native/docs/view.html#style))_ - Container style
- **`contentStyle`** _([View.propTypes.style](https://facebook.github.io/react-native/docs/view.html#style))_ - Content style
- **`contentProps`** _(Object)_ - props that are applied to root `ScrollView`/`ViewPagerAndroid`. Note that overriding defaults set by the library may break functionality; see the source for details.
- **`scrollWithoutAnimation`** _(Bool)_ - on tab press change tab without animation.
- **`prerenderingSiblingsNumber`** _(Integer)_ - pre-render nearby # sibling, `Infinity` === render all the siblings, default to 0 === render current page.
- **`pullToRefresh`** _(Function)_ - function to perform in case of a pull to refresh action. This function required a callback to stop the refresh animation. Follow the example bellow
- **`refreshControlStyle`** _(React style Object)_ - Style object applied to the `RefreshControl` React Component.
- **`showsVerticalScrollIndicator`** _(Bool)_ - Show scroll indicator
- **`showsHorizontalScrollIndicator`** _(Bool)_ - Show scroll indicator

- **`disableTabBarOnLayout`** _(Bool)_ - Used on ScrollableTabBar to disable auto Layout of tabs. Auto-Layout sometimes causes a flickering effect. To disable ==> `<ScrollableTabBar disableTabBarOnLayout={true}/>`

### Pull to refresh example

```javascript
import React, { Component } from "react";
import { ScrollableTabView } from "@knoxzin1/react-native-scrollable-tabview";

export default class Test extends Component {
  //execute callback in order to stop the refresh animation.
  _onRefresh = callback => {
    networkRequest().then(response => callback(response));
  };

  render() {
    return (
      <ScrollableTabView
        refreshControlStyle={{ backgroundColor: "red" }}
        pullToRefresh={this._onRefresh}
      >
        <ScrollView tabLabel="one">
          <View>
            <Text>One</Text>
          </View>
        </ScrollView>
        <ScrollView tabLabel="two">
          <View>
            <Text>Two</Text>
          </View>
        </ScrollView>
      </ScrollableTabView>
    );
  }
}
```

**MIT Licensed**