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react-native-underline-tabbar-no-flow

v1.2.8

Published

Custom Tabbar for https://github.com/skv-headless/react-native-scrollable-tab-view

Downloads

7

Readme

react-native-underline-tabbar

npm version

Custom Tabbar for https://github.com/skv-headless/react-native-scrollable-tab-view. It consists of some features e.g. scrollable content in tabs. Animations are build on matrix transformations and fully compatible with Animated library. In a new version there was significant improvement of tabbar behaviour.

Instalation

npm install react-native-underline-tabbar --save
Or using Yarn
yarn add react-native-underline-tabbar

Showcase

react-native-underline-tabbar demo

Documentation

| Property | Type | Default | Description | |-----------|---------------------|----------|--------------------------------------------| | tabs | {label: string, badge:string, badgeColor?: string, [string]: any}[] | required | You don't have to pass this prop directly to tabbar. Istead, it's automatically passed from ScrollableTabView from tabLabel of your page. In defaultTabbar it is used only to pass a label, but we use it to pass there information about badges. Example tabLabel={{label: "Page #4", badge: 8, badgeColor: 'violet'}}. Also you can pass any data you need as it's used as Map| | underlineColor | string | "navy" | Set a color for underline. You can use also transparent to hide underline | | underlineHeight | number | 2 | Set a height for underline | | underlineBottomPosition | number | 0 | Set a bottom for underline | | tabBarStyle | Object | {} | Set styles to TabBar container | | activeTabTextStyle | Object | {} | Set styles to text in tabs while tab is active | | tabBarTextStyle | Object | {} | Set styles to text in tabs | | tabBadgeColor | string | {} | Set a common color for all badges. To set badgeColor individually use badgeColor in tab property | | tabMargin | number | 20 | Set space between tabs |

Warning: It's better to avoid usage of styles which can change the size of your active tab. E.g. font-weight, font-size. Underline still work but not as good as you can expect.

Simple Usage

import React, { Component } from 'react';
import {
  AppRegistry,
  StyleSheet,
  Text,
  View
} from 'react-native';
import ScrollableTabView from 'react-native-scrollable-tab-view';
import TabBar from "react-native-underline-tabbar";

const Page = ({label}) => (
    <View style={styles.container}>
      <Text style={styles.welcome}>
        {label}
      </Text>
      <Text style={styles.instructions}>
        To get started, edit index.ios.js
      </Text>
      <Text style={styles.instructions}>
        Press Cmd+R to reload,{'\n'}
        Cmd+D or shake for dev menu
      </Text>
    </View>
);

class example extends Component {
  render() {
    return (
        <View style={[styles.container, {paddingTop: 20}]}>
          <ScrollableTabView
              tabBarActiveTextColor="#53ac49"
              renderTabBar={() => <TabBar underlineColor="#53ac49" />}>
            <Page tabLabel={{label: "Page #1"}} label="Page #1"/>
            <Page tabLabel={{label: "Page #2 aka Long!", badge: 3}} label="Page #2 aka Long!"/>
            <Page tabLabel={{label: "Page #3"}} label="Page #3"/>
            <Page tabLabel={{label: "Page #4 aka Page"}} label="Page #4 aka Page"/>
            <Page tabLabel={{label: "Page #5"}} label="Page #5"/>
          </ScrollableTabView>

        </View>
    );
  }
}

Advanced usage

import React, { Component } from 'react';
import { StyleSheet, Text, View, TouchableOpacity, Animated } from 'react-native';
import ScrollableTabView from 'react-native-scrollable-tab-view';
import TabBar from 'react-native-underline-tabbar';

const styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: 'center',
    alignItems: 'center',
    backgroundColor: '#F5FCFF',
  },
  welcome: {
    fontSize: 20,
    textAlign: 'center',
    margin: 10,
  },
  instructions: {
    textAlign: 'center',
    color: '#333333',
    marginBottom: 5,
    fontSize: 28,
  },
});

const Page = ({label, text = ''}) => (
  <View style={styles.container}>
    <Text style={styles.welcome}>
      {label}
    </Text>
    <Text style={styles.instructions}>
      {text}
    </Text>
  </View>
);

const iconsSet = {
  hot: require('./images/ic_whatshot.png'),
  trending: require('./images/ic_trending_up.png'),
  fresh: require('./images/ic_fiber_new.png'),
  funny: require('./images/ic_tag_faces.png'),
  movieAndTv: require('./images/ic_live_tv.png'),
  sport: require('./images/ic_rowing.png'),
};

const Tab = (tab, page, isTabActive, onPressHandler, onTabLayout, styles) => {
  const { label, icon } = tab;
  const style = {
    marginHorizontal: 20,
    paddingVertical: 10,
  };
  const containerStyle = {
    paddingHorizontal: 20,
    paddingVertical: 5,
    borderRadius: 25,
    flexDirection: 'row',
    alignItems: 'center',
    backgroundColor: styles.backgroundColor,
    opacity: styles.opacity,
    transform: [{ scale: styles.opacity }],
  };
  const textStyle = {
    color: styles.textColor,
    fontWeight: '600',
  };
  const iconStyle = {
    tintColor: styles.textColor,
    resizeMode: 'contain',
    width: 22,
    height: 22,
    marginLeft: 10,
  };
  return (
    <TouchableOpacity style={style} onPress={onPressHandler} onLayout={onTabLayout} key={page}>
      <Animated.View style={containerStyle}>
        <Animated.Text style={textStyle}>{label}</Animated.Text>
        <Animated.Image style={iconStyle} source={icon} />
      </Animated.View>
    </TouchableOpacity>
  );
};

class UnderlineTabBarExample extends Component {
  _scrollX = new Animated.Value(0);
  // 6 is a quantity of tabs
  interpolators = [...Array(6).keys()].map(idx => ({
    scale: this._scrollX.interpolate({
      inputRange: [idx - 1, idx, idx + 1],
      outputRange: [1, 1.2, 1],
      extrapolate: 'clamp',
    }),
    opacity: this._scrollX.interpolate({
      inputRange: [idx - 1, idx, idx + 1],
      outputRange: [0.9, 1, 0.9],
      extrapolate: 'clamp',
    }),
    textColor: this._scrollX.interpolate({
      inputRange: [idx - 1, idx, idx + 1],
      outputRange: ['#000', '#fff', '#000'],
    }),
    backgroundColor: this._scrollX.interpolate({
      inputRange: [idx - 1, idx, idx + 1],
      outputRange: ['rgba(0,0,0,0.1)', '#000', 'rgba(0,0,0,0.1)'],
      extrapolate: 'clamp',
    }),
  }));
  render() {
    return (
      <View style={[styles.container, { paddingTop: 20 }]}>
        <ScrollableTabView
          renderTabBar={() => (
            <TabBar
              underlineColor="#000"
              tabBarStyle={{ backgroundColor: "#fff", borderTopColor: '#d2d2d2', borderTopWidth: 1 }}
              renderTab={(...props) => {
                return Tab(...props, this.interpolators[props[1]]);
              }}
            />
          )}
          onScroll={(x) => this._scrollX.setValue(x)}
        >
          <Page tabLabel={{label: "Hot", icon: iconsSet.hot}} label="Page #1 Hot" text="You can pass your own views to TabBar!"/>
          <Page tabLabel={{label: "Trending", icon: iconsSet.trending}} label="Page #2 Trending" text="Yehoo!!!"/>
          <Page tabLabel={{label: "Fresh", icon: iconsSet.fresh}} label="Page #3 Fresh" text="Hooray!"/>
          <Page tabLabel={{label: "Funny", icon: iconsSet.funny}} label="Page #4 Funny"/>
          <Page tabLabel={{label: "Movie & TV", icon: iconsSet.movieAndTv}} label="Page #5 Movie & TV"/>
          <Page tabLabel={{label: "Sport", icon: iconsSet.sport}} label="Page #6 Sport"/>
        </ScrollableTabView>
      </View>
    );
  }
}

Notice! In case of using this tabbar we must pass object into tabLabel property. It is necessary to set labels and badges.

Example

Example is here

Changelog

  • [1.2.8]
    • Minor fix
  • [1.2.7]
    • Types are available for importing
  • [1.2.6]
    • Improve offset calculations for tabs which are located in the end of TabBar
    • Now you can pass more than 10 tabs to component
  • [1.2.5]
    • Fix bug when activeTabTextStyle had lower priority than just textStyle
    • Add customization for underline
  • [1.2.4]
    • Update descriptions.
  • [1.2.3]
    • Fixed bug when user provide less than two tabs.
  • [1.2.2]
    • Minor changes
  • [1.2.1]
    • Now it's possible to pass your own renderTab function (hooray!). It opens many opportunities for customization
    • Type of Tab has been changed. Now it's a map where you can pass any data you need to use in your custom Tab view
    • Example has been added
  • [1.2.0]
    • Initial setup now depends on initialPage prop.
    • Calculating of interpolations now doesn't apply transformations to underline. It prevents flickering when tab has styles which resize it
    • Better manual scrolling performance of TabBar
  • [1.1.7]
    • Possibly unnecessary transformations to underline have been removed. It improves behaviour on Android
  • [1.1.6]
    • Change hardcoded marginValue on value from props to calculate scroll positions properly
  • [1.1.5]
    • Prevent crashing on android devices
  • [1.1.4]
    • Interpolation values are calculated only when all mandatory views are measured. It prevents incorrect behaviour of tabs scrolling and underline.
    • Now you can set default colour for badges using tabBadgeColor prop
    • Now you can set margins between tabs using tabMargin prop