2018-09-17 01:52:37 -07:00

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# react-native-circular-progress
React Native component for creating animated, circular progress. Useful for displaying users points for example. **Works on iOS & Android.**
## Example app
![image](screenshot.gif)
## Installation
1. Install this component and `react-native-svg`:
`npm i --save react-native-circular-progress react-native-svg`
2. Link native code for SVG:
`react-native link react-native-svg`
## Usage
Import CircularProgress or AnimatedCircularProgress:
```js
import { AnimatedCircularProgress } from 'react-native-circular-progress';
```
Use as follows:
```jsx
<AnimatedCircularProgress
size={120}
width={15}
fill={100}
tintColor="#00e0ff"
onAnimationComplete={() => console.log('onAnimationComplete')}
backgroundColor="#3d5875" />
```
You can also define a function, that'll receive current progress and for example display it inside the circle:
```jsx
<AnimatedCircularProgress
size={200}
width={3}
fill={this.state.fill}
tintColor="#00e0ff"
backgroundColor="#3d5875">
{
(fill) => (
<Text style={styles.points}>
{ this.state.fill }
</Text>
)
}
</AnimatedCircularProgress>
```
Finally, you can manually trigger a duration-based timing animation by putting a ref on the component and calling the `animate(toValue, duration, easing)` function like so:
```jsx
<AnimatedCircularProgress
ref={(ref) => this.circularProgress = ref}
...
/>
```
```javascript
this.circularProgress.animate(100, 8000, Easing.quad); // Will fill the progress bar linearly in 8 seconds
```
The `animate`-function returns the timing animation so you can chain, run in parallel etc.
## Configuration
You can configure the passing by following props:
- **size** width and height of the circle - could be `number` or `object` if you use `Aniamted.Value()`
- **width** - thickness of the lines
- **backgroundWidth** - thickness of the background line
- **fill** - current, percentage fill (from 0 to 100)
- **prefill** - percentage fill before the animation (from 0 to 100)
- **tintColor** - color of the progress line
- **backgroundColor** - color of the background for the progress line. If unspecified, no background will be rendered
- **rotation** - by default, progress starts from the angle = 90⦝, you can change it by setting value from -360 to 360
- **duration** - duration of the animation in milliseconds. Default is 500ms
- **easing** - animation easing function
- **lineCap** - the shape to be used at the ends of the circle. Possible values: butt (default), round or square. (see [here](https://developer.mozilla.org/en/docs/Web/SVG/Attribute/stroke-linecap))
- **arcSweepAngle** - the angle that you want your arc to sweep in the case where you don't want a full circle. Default is 360.
- **children(fill)** - you can pass function as a child to receive current fill
- **onAnimationComplete** - you can pass a callback function that will be invoked when animation completes. (see [here](https://facebook.github.io/react-native/docs/animated.html#working-with-animations))
## Running example app
```sh
git clone https://github.com/bgryszko/react-native-circular-progress.git
cd react-native-circular-progress/example
yarn
yarn start
```
## Author
Bartosz Gryszko (b@gryszko.com)
## License
MIT
## Special thanks
Special thanks to [Chalk+Chisel](http://chalkchisel.com) for creating working environment where people grow. This component was created for one of the projects we're working on.