react-native-pin-code

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react-native-pin-code

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A simple pin code component for react-native

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# react-native-pin-code

![last release](https://badgen.net/npm/v/react-native-pin-code) ![monthly download](https://badgen.net/npm/dm/react-native-pin-code) ![license](https://badgen.net/github/license/gkueny/react-native-pin-code)

A simple pin code component

![example with blur background](https://media.giphy.com/media/xUPGcffB0VeaMd6DSM/giphy.gif)
![a simple example](https://media.giphy.com/media/3oKIPsotgoJ8ZGEr5u/giphy.gif)

## Installation

npm install react-native-pin-code --save

## Example

```js
<CodePin
  code="2018" // code.length is used if you not pass number prop
  success={() => console.log('hurray!')} // If user fill '2018', success is called
  text="A simple Pin code component" // My title
  error="You fail" // If user fail (fill '2017' for instance)
  autoFocusFirst={false} // disabling auto-focus
/>
```

```js
<CodePin
  number={4} // You must pass number prop, it will be used to display 4 (here) inputs
  checkPinCode={(code, callback) => callback(code === '1234')}
  // Check manually code (ask server for instance)
  // and call callback function with
  //    true  (code pin is correct)
  // or false (code pin is false)
  success={() => console.log('hurray!')} // If user fill '2018', success is called
  text="A simple Pin code component" // My title
  error="You fail" // If user fail (fill '2017' for instance)
  autoFocusFirst={false} // disabling auto-focus
/>
```

> Code prop is not needed if checkPinCode is used

## props

| prop              | type                      | description                                                                                                                                                                                                      | isRequired   | default value                                                                                                                                                                                                      |
| ----------------- | ------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| code              | number                    | pin code                                                                                                                                                                                                         | not required | ''                                                                                                                                                                                                                 |
| success           | function                  | call on success                                                                                                                                                                                                  | required     |                                                                                                                                                                                                                    |
| checkPinCode      | function                  | this function is called to check pin code. The parameters are : `code` (the code filled by user) and a `callback` function. callback must be called with true (code pin is correct) or false (code pin is wrong) | not required | null                                                                                                                                                                                                               |
| obfuscation       | boolean                   | If true, obfuscate code with '\*'                                                                                                                                                                                |              | false                                                                                                                                                                                                              |
| text              | string                    | text to display as title                                                                                                                                                                                         |              | 'Pin code.'                                                                                                                                                                                                        |
| error             | string                    | text to display on error                                                                                                                                                                                         |              | 'Bad pin code.'                                                                                                                                                                                                    |
| number            | number                    | number of input to display                                                                                                                                                                                       |              | 4                                                                                                                                                                                                                  |
| autoFocusFirst    | boolean                   | auto focus first input                                                                                                                                                                                           |              | true                                                                                                                                                                                                               |
| containerStyle    | object, StyleSheet object | container style                                                                                                                                                                                                  |              | { height: 150, width: width - 30, backgroundColor : '#FFF' }                                                                                                                                                       |
| containerPinStyle | object, StyleSheet object | inputs container style                                                                                                                                                                                           |              | { width: width - 30, height: 40, flexDirection: 'row', justifyContent: 'space-around', alignItems: 'center', marginTop: 20 }                                                                                       |
| pinStyle          | object, StyleSheet object | input style                                                                                                                                                                                                      |              | { backgroundColor : '#F0F0F0', textAlign: 'center', flex: 1, marginLeft: 20, marginRight: 20, borderRadius: 5, shadowColor: '#000000', shadowOffset: {width: 1,height : 1}, shadowRadius: 5, shadowOpacity : 0.4 } |
| textStyle         | object, StyleSheet object | text style                                                                                                                                                                                                       |              | { textAlign: 'center', color: 'gray', fontSize: 20, marginTop: 30 }                                                                                                                                                |
| errorStyle        | object, StyleSheet object | error text style                                                                                                                                                                                                 |              | { textAlign: 'center', color: 'red', paddingTop: 10 }                                                                                                                                                              |

All other `props` are pass down to `TextInput` component.

For instance you can customize keyboardtype :

```js
<CodePin
  //...
  keyboardType="numeric"
/>
```

## Functions

To use pin code component function, use ref :

```js
  <CodePin
    ref={ref => this.ref = ref}
    ...
  />
```

## clean

clean inputs and focus first input.

```js
this.ref.clean();
```

## focus

focus input at specified index

```js
this.ref.focus(1);
```

## Examples

> [react-native-pin-code-examples](https://github.com/gkueny/react-native-pin-code-examples)

To test examples (use [expo](https://expo.io)) :

```
  git clone https://github.com/gkueny/react-native-pin-code-examples
  cd blurExample
  npm install
  npm run ios
```

```
  git clone https://github.com/gkueny/react-native-pin-code-examples
  cd simpleExample
  npm install
  npm run ios
```

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