npm package: @husam287/react-native-curved-bottom-bar
Description: A high performance, beautiful and fully customizable curved bottom navigation bar for React Native.
Author: Hoa Phan
Latest version: 1.7.5

## 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-native-pager-view](https://github.com/callstack/react-native-pager-view).
## 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-native-pager-view](https://github.com/callstack/react-native-pager-view).

```js
    npm install react-native-svg react-native-pager-view --save
```
or
```js
    yarn add react-native-svg react-native-pager-view
```


#### Source code demo
[react-native-template-components](https://github.com/hoaphantn7604/react-native-template-components) A beautiful template for React Native.
### Demo
![](https://github.com/hoaphantn7604/file-upload/blob/master/document/navigationbar/demo.gif)


### CurvedBottomBar.Navigator

| Props              | Params                                              | isRequire | Description                                                             | 
| ------------------ | --------------------------------------------------- | --------- | ----------------------------------------------------------------------- |
| type               | 'down' or 'up'                                      | Yes       | Type of the center tab item, downward curve or upward curve             |
| 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       | ({ 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                 |
| style              | ViewStyle                                           | No        | Styling for container view                                              |
| width              | Number                                              | No        | Customize width for container view                                      |
| height             | Number                                              | No        | Customize height for container view                                     |
| borderTopLeftRight | Boolean                                             | No        | Border radius top left and top right of container view                  |
| bgColor            | String                                              | No        | Background color of container view                                      |
| strokeWidth        | Number                                              | No        | Border width of container view                                          |
| swipeEnabled       | Boolean                                             | No        | Indicating whether to enable swipe gestures                             |
| lazy               | Boolean                                             | No        | If "lazy" is true then "swipeEnabled" is disabled                       |

### Method

| API                | Params               | Description                                                             | 
| ------------------ | -------------------- | ----------------------------------------------------------------------- |
| navigate           | () => void           | Navigate to a tabbar                                                    |
| getRouteName       | String               | Return route name                                                       |

### CurvedBottomBar.Screen

| Props              | Params                        | isRequire | Description                                                                               |
| ------------------ | ----------------------------- | --------- | ----------------------------------------------------------------------------------------- |
| name               | String                        | Yes       | Name of the route to jump to                                                              |
| position           | left, right, center           | Yes       | Set position of screen to the left or right of the center button. Use type "center" only when you want the center button is a tabview                      |
| component          | ({ navigate }) => JSX.Element | Yes       | Screen params to merge into the destination route                                         |
| renderHeader       | ({ navigate }) => JSX.Element | Yes       | Customize header in screen                                                                |

### Example 1
![](https://github.com/hoaphantn7604/file-upload/blob/master/document/navigationbar/example1.png)
```javascript
  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';

  export const tabBar = () => {
    const _renderIcon = (routeName: string, selectedTab: string) => {
      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 }: any) => {
      return (
        <TouchableOpacity
          onPress={() => navigate(routeName)}
          style={{
            flex: 1,
            alignItems: 'center',
            justifyContent: 'center',
          }}>
          {_renderIcon(routeName, selectedTab)}
        </TouchableOpacity>
      );
    };

    return (
      <View style={{ flex: 1 }}>
        <CurvedBottomBar.Navigator
          style={styles.bottomBar}
          strokeWidth={0.5}
          height={55}
          circleWidth={55}
          bgColor="white"
          initialRouteName="title1"
          borderTopLeftRight
          swipeEnabled
          renderCircle={({ selectedTab, navigate }) => (
            <Animated.View style={styles.btnCircle}>
              <TouchableOpacity
                style={{
                  flex: 1,
                  justifyContent: 'center',
                }}
                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={({ navigate }) => (
              <View style={{ backgroundColor: '#BFEFFF', flex: 1 }} />
            )}
          />
          <CurvedBottomBar.Screen
            name="title2"
            component={({ navigate }) => (
              <View style={{ backgroundColor: '#FFEBCD', flex: 1 }} />
            )}
            position="right"
          />
        </CurvedBottomBar.Navigator>
      </View>
    );
  };

  export const styles = StyleSheet.create({
    container: {
      flex: 1,
      padding: 20,
    },
    button: {
      marginVertical: 5,
    },
    bottomBar: {},
    btnCircle: {
      width: 60,
      height: 60,
      borderRadius: 35,
      alignItems: 'center',
      justifyContent: 'center',
      backgroundColor: 'white',
      padding: 10,
      shadowColor: '#000',
      shadowOffset: {
        width: 0,
        height: 0.5,
      },
      shadowOpacity: 0.2,
      shadowRadius: 1.41,
      elevation: 1,
      bottom: 30,
    },
    imgCircle: {
      width: 30,
      height: 30,
      tintColor: 'gray',
    },
    img: {
      width: 30,
      height: 30,
    },
  });
```

### Example 2
![](https://github.com/hoaphantn7604/file-upload/blob/master/document/navigationbar/example2.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';

  export const tabBar = () => {
    const _renderIcon = (routeName: string, selectedTab: string) => {
      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 }: any) => {
      return (
        <TouchableOpacity
          onPress={() => navigate(routeName)}
          style={{
            flex: 1,
            alignItems: 'center',
            justifyContent: 'center',
          }}>
          {_renderIcon(routeName, selectedTab)}
        </TouchableOpacity>
      );
    };

    return (
      <View style={{ flex: 1 }}>
        <CurvedBottomBar.Navigator
          type="up"
          style={styles.bottomBar}
          strokeWidth={0.5}
          height={55}
          circleWidth={55}
          bgColor="white"
          initialRouteName="title1"
          borderTopLeftRight
          swipeEnabled
          renderCircle={({ selectedTab, navigate }) => (
            <Animated.View style={styles.btnCircleUp}>
              <TouchableOpacity
                style={{
                  flex: 1,
                  justifyContent: 'center',
                }}
                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={({ navigate }) => (
              <View style={{ backgroundColor: '#BFEFFF', flex: 1 }} />
            )}
          />
          <CurvedBottomBar.Screen
            name="title2"
            component={({ navigate }) => (
              <View style={{ backgroundColor: '#FFEBCD', flex: 1 }} />
            )}
            position="right"
          />
        </CurvedBottomBar.Navigator>
      </View>
    );
  };

  export const styles = StyleSheet.create({
    container: {
      flex: 1,
      padding: 20,
    },
    button: {
      marginVertical: 5,
    },
    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',
    },
    img: {
      width: 30,
      height: 30,
    },
  });
```