![](https://github.com/hoaphantn7604/file-upload/blob/master/document/navigationbar/react-native-curved-bottom-bar-demo.png)

# react-native-curved-bottom-bar
A high performance, beautiful and fully customizable curved bottom navigation bar for React Native.
Implemented using [react-native-svg](https://github.com/react-native-svg/react-native-svg) and [@react-navigation/bottom-tabs](https://reactnavigation.org/docs/bottom-tab-navigator).

```js
If you love this library, give us a star, you will be a ray of sunshine in our lives :)
```

### Free React Native Boilerplate
[React Native Template](https://github.com/hoaphantn7604/react-native-template-components) with a beautiful UI.
## Getting started
```js
npm install react-native-curved-bottom-bar --save
```
or
```js
yarn add react-native-curved-bottom-bar
```
Now we need to install [react-native-svg](https://github.com/react-native-svg/react-native-svg) and [@react-navigation/bottom-tabs](https://reactnavigation.org/docs/bottom-tab-navigator).

## Demo

[<img src="https://github.com/hoaphantn7604/file-upload/blob/master/document/navigationbar/react-native-curved-bottom-bat-thumbnail.jpg">](https://youtu.be/FIuhT2QYie8)


<br />

![](https://github.com/hoaphantn7604/file-upload/blob/master/document/navigationbar/react-native-curved-bottom-bar.gif)


### CurvedBottomBar.Navigator

| Props              | Params                                                | isRequire | Description                                                       |
|--------------------|-------------------------------------------------------| --------- |-------------------------------------------------------------------|
| type               | 'DOWN' or 'UP'                                        | Yes       | Type of the center tab item, downward curve or upward curve       |
| circlePosition     | 'CENTER' or 'LEFT' or 'RIGHT'                         | No        | Position of circle button                                         |
| initialRouteName   | String                                                | Yes       | The name of the route to render on first load of the navigator    |
| tabBar             | ({ routeName, selectedTab, navigate }) => JSX.Element | Yes       | Function that returns a React element to display as the tab bar   |
| renderCircle       | ({ routeName, selectedTab, navigate }) => JSX.Element | Yes       | Function that returns a React element to display as the center tab item |
| circleWidth        | Number                                                | No        | Customize width of the center tab item. Minimum is 50px and Maximum is 60px 
| style              | ViewStyle                                             | No        | Styling for container view                                        |
| shadowStyle        | ViewStyle                                             | No        | Styling for shadow view.                                          |
| width              | Number                                                | No        | Customize width for container view                                |
| height             | Number                                                | No        | Customize height for container view, Minimum is 50px and Maximum is 90px |
| borderTopLeftRight | Boolean                                               | No        | Border radius top left and top right of container view            |
| borderColor        | String                                                | No        | Border color                                                      |
| borderWidth        | Number                                                | No        | Border width                                                      |
| bgColor            | String                                                | No        | Background color of container view                                |


### CurvedBottomBar.Screen

| Props              | Params                        | isRequire | Description                                                                               |
| ------------------ | ----------------------------- | --------- | ----------------------------------------------------------------------------------------- |
| name               | String                        | Yes       | Name of the route to jump to                                                              |
| position           | 'LEFT' or 'RIGHT' or 'CIRCLE' | Yes       | Set position of tabbar icon to the left or right of the circle button. Use type "CIRCLE" only when you want the circle button is a tabview |
| component          | (props) => JSX.Element        | Yes       | Screen params to merge into the destination route                                         |

### API
| Function           | Params                        | Description                                                                               |
| ------------------ | ----------------------------- | ----------------------------------------------------------------------------------------- |
| setVisible         | Boolean                       | Used to hide/show the tab bar. Ex: ref.current.setVisible(false)                          |

### Use in Expo
![](https://github.com/hoaphantn7604/file-upload/blob/master/document/navigationbar/react-native-curved-bottom-bar-1.png)
```js
import React from 'react';
import {
  Alert,
  Animated,
  StyleSheet,
  TouchableOpacity,
  View,
} from 'react-native';
import { CurvedBottomBarExpo } from 'react-native-curved-bottom-bar';
import Ionicons from '@expo/vector-icons/Ionicons';
import { NavigationContainer } from '@react-navigation/native';

const Screen1 = () => {
  return <View style={styles.screen1} />;
};

const Screen2 = () => {
  return <View style={styles.screen2} />;
};

export default function App() {
  const _renderIcon = (routeName, selectedTab) => {
    let icon = '';

    switch (routeName) {
      case 'title1':
        icon = 'ios-home-outline';
        break;
      case 'title2':
        icon = 'settings-outline';
        break;
    }

    return (
      <Ionicons
        name={icon}
        size={25}
        color={routeName === selectedTab ? 'black' : 'gray'}
      />
    );
  };
  const renderTabBar = ({ routeName, selectedTab, navigate }) => {
    return (
      <TouchableOpacity
        onPress={() => navigate(routeName)}
        style={styles.tabbarItem}
      >
        {_renderIcon(routeName, selectedTab)}
      </TouchableOpacity>
    );
  };

  return (
    <NavigationContainer>
      <CurvedBottomBarExpo.Navigator
        type="DOWN"
        style={styles.bottomBar}
        shadowStyle={styles.shawdow}
        height={55}
        circleWidth={50}
        bgColor="white"
        initialRouteName="title1"
        borderTopLeftRight
        renderCircle={({ selectedTab, navigate }) => (
          <Animated.View style={styles.btnCircleUp}>
            <TouchableOpacity
              style={styles.button}
              onPress={() => Alert.alert('Click Action')}
            >
              <Ionicons name={'apps-sharp'} color="gray" size={25} />
            </TouchableOpacity>
          </Animated.View>
        )}
        tabBar={renderTabBar}
      >
        <CurvedBottomBarExpo.Screen
          name="title1"
          position="LEFT"
          component={() => <Screen1 />}
        />
        <CurvedBottomBarExpo.Screen
          name="title2"
          component={() => <Screen2 />}
          position="RIGHT"
        />
      </CurvedBottomBarExpo.Navigator>
    </NavigationContainer>
  );
}

export const styles = StyleSheet.create({
  container: {
    flex: 1,
    padding: 20,
  },
  shawdow: {
    shadowColor: '#DDDDDD',
    shadowOffset: {
      width: 0,
      height: 0,
    },
    shadowOpacity: 1,
    shadowRadius: 5,
  },
  button: {
    flex: 1,
    justifyContent: 'center',
  },
  bottomBar: {},
  btnCircleUp: {
    width: 60,
    height: 60,
    borderRadius: 30,
    alignItems: 'center',
    justifyContent: 'center',
    backgroundColor: '#E8E8E8',
    bottom: 30,
    shadowColor: '#000',
    shadowOffset: {
      width: 0,
      height: 1,
    },
    shadowOpacity: 0.2,
    shadowRadius: 1.41,
    elevation: 1,
  },
  imgCircle: {
    width: 30,
    height: 30,
    tintColor: 'gray',
  },
  tabbarItem: {
    flex: 1,
    alignItems: 'center',
    justifyContent: 'center',
  },
  img: {
    width: 30,
    height: 30,
  },
  screen1: {
    flex: 1,
    backgroundColor: '#BFEFFF',
  },
  screen2: {
    flex: 1,
    backgroundColor: '#FFEBCD',
  },
});

```

### Use in RN CLI
![](https://github.com/hoaphantn7604/file-upload/blob/master/document/navigationbar/react-native-curved-bottom-bar-2.png)
```js
import React from 'react';
import {
  Alert,
  Animated,
  StyleSheet,
  TouchableOpacity,
  View,
} from 'react-native';
import { CurvedBottomBar } from 'react-native-curved-bottom-bar';
import Ionicons from 'react-native-vector-icons/Ionicons';
import { NavigationContainer } from '@react-navigation/native';

const Screen1 = () => {
  return <View style={styles.screen1} />;
};

const Screen2 = () => {
  return <View style={styles.screen2} />;
};

export default function App() {
  const _renderIcon = (routeName, selectedTab) => {
    let icon = '';

    switch (routeName) {
      case 'title1':
        icon = 'ios-home-outline';
        break;
      case 'title2':
        icon = 'settings-outline';
        break;
    }

    return (
      <Ionicons
        name={icon}
        size={25}
        color={routeName === selectedTab ? 'black' : 'gray'}
      />
    );
  };
  const renderTabBar = ({ routeName, selectedTab, navigate }) => {
    return (
      <TouchableOpacity
        onPress={() => navigate(routeName)}
        style={styles.tabbarItem}
      >
        {_renderIcon(routeName, selectedTab)}
      </TouchableOpacity>
    );
  };

  return (
    <NavigationContainer>
      <CurvedBottomBar.Navigator
        type="UP"
        style={styles.bottomBar}
        shadowStyle={styles.shawdow}
        height={55}
        circleWidth={50}
        bgColor="white"
        initialRouteName="title1"
        borderTopLeftRight
        renderCircle={({ selectedTab, navigate }) => (
          <Animated.View style={styles.btnCircleUp}>
            <TouchableOpacity
              style={styles.button}
              onPress={() => Alert.alert('Click Action')}
            >
              <Ionicons name={'apps-sharp'} color="gray" size={25} />
            </TouchableOpacity>
          </Animated.View>
        )}
        tabBar={renderTabBar}
      >
        <CurvedBottomBar.Screen
          name="title1"
          position="LEFT"
          component={() => <Screen1 />}
        />
        <CurvedBottomBar.Screen
          name="title2"
          component={() => <Screen2 />}
          position="RIGHT"
        />
      </CurvedBottomBar.Navigator>
    </NavigationContainer>
  );
}

export const styles = StyleSheet.create({
  container: {
    flex: 1,
    padding: 20,
  },
  shawdow: {
    shadowColor: '#DDDDDD',
    shadowOffset: {
      width: 0,
      height: 0,
    },
    shadowOpacity: 1,
    shadowRadius: 5,
  },
  button: {
    flex: 1,
    justifyContent: 'center',
  },
  bottomBar: {},
  btnCircleUp: {
    width: 60,
    height: 60,
    borderRadius: 30,
    alignItems: 'center',
    justifyContent: 'center',
    backgroundColor: '#E8E8E8',
    bottom: 18,
    shadowColor: '#000',
    shadowOffset: {
      width: 0,
      height: 1,
    },
    shadowOpacity: 0.2,
    shadowRadius: 1.41,
    elevation: 1,
  },
  imgCircle: {
    width: 30,
    height: 30,
    tintColor: 'gray',
  },
  tabbarItem: {
    flex: 1,
    alignItems: 'center',
    justifyContent: 'center',
  },
  img: {
    width: 30,
    height: 30,
  },
  screen1: {
    flex: 1,
    backgroundColor: '#BFEFFF',
  },
  screen2: {
    flex: 1,
    backgroundColor: '#FFEBCD',
  },
});

```
<br />

[<img src="https://github.com/hoaphantn7604/file-upload/blob/master/document/profile/hoa_phan_dev_banner.png">](https://github.com/hoaphantn7604)