Text and TextInput with mask for React Native applications

react-native-masked-text

A simple masked text and input text component for React-Native.

This is a simple masked text (normal text and input text) component for React-Native.

Supported Versions

React-native: 0.32.0 or higher

Install

npm install react-native-masked-text --save

Usage (TextInputMask)

import React, { Component } from 'react'

// import the component
import { TextInputMask } from 'react-native-masked-text'

export default class MyComponent extends Component {
	constructor(props) {
		super(props)
	}

	componentDidMount() {
		// isValid method returns if the inputed value is valid.
		// Ex: if you input 40/02/1990 30:20:20, it will return false
		//	   because in this case, the day and the hour is invalid.
		let valid = this.myDateText.isValid();

		// get converted value. Using type=datetime, it returns the moment object.
		// If it's using type=money, it returns a Number object.
		let rawValue = this.myDateText.getRawValue();
	}

	render() {
		// the type is required but options is required only for some specific types.
		return (
			<TextInputMask
				refInput={(ref) => this.myDateText = ref;}
				type={'datetime'}
				options={{
					format: 'DD-MM-YYYY HH:mm:ss'
				}}
			/>
		)
	}
}

Props

type

credit-card: use the mask 9999 9999 9999 9999. It accepts options (see later in this doc).

cpf: use the mask 999.999.999-99 and numeric keyboard.

cnpj: use the mask 99.999.999/9999-99 and numeric keyboard.

zip-code: use the mask 99999-999 and numeric keyboard.

only-numbers: accept only numbers on field with numeric keyboard.

money: use the mask R$ 0,00 on the field with numeric keyboard. It accepts options (see later in this doc).

cel-phone: use the mask (99) 9999-9999 or (99) 99999-9999 (changing automaticaly by length). It accepts options (see later in this doc).

datetime: use datetime mask with moment format (default DD/MM/YYYY HH:mm:ss). It accepts options (see later in this doc).

custom: use your custom mask (see the options props later in this doc).

onChangeText

Invoked after new value applied to mask.

/**
 * @param {String} text the text AFTER mask is applied.
*/
onChangeText(text) {
	// ...
}

<TextInputMask
	type={'only-numbers'}
	onChangeText={this.onChangeText.bind(this)} />

checkText

Allow you to check and prevent value to be inputed.

/**
 * @param {String} previous the previous text in the masked field.
 * @param {String} next the next text that will be setted to field.
 * @return {Boolean} return true if must accept the value.
*/
checkText(previous, next) {
	return next === 'your valid value or other boolean condition';
}

<TextInputMask
	type={'only-numbers'}
	checkText={this.checkText.bind(this)} />

customTextInput

You can use this prop if you want custom text input instead native TextInput component:

const Textfield = MKTextField.textfield()
  .withPlaceholder('Text...')
  .withStyle(styles.textfield)
  .build();


<TextInputMask
	refInput={(ref) => this.myDateText = ref;}
	type={'money'}
	style={styles.input}
	customTextInput={Textfield}
	placeholder="Enter text to see events"
/>

customTextInputProps

Some custom inputs like react-native-textinput-effects have to set properties in mount time. For these types of components we use this property.

import React from 'react'
import { StyleSheet, View } from 'react-native'

import { TextInputMask } from 'react-native-masked-text'
import { Kaede } from 'react-native-textinput-effects'

export default class App extends React.Component {
  constructor(props) {
    super(props)

    this.state = {
      birthday: ''
    }
  }

  render() {
    return (
      <View style={styles.container}>
        <TextInputMask
          refInput={(ref) => this.myDateText = ref;}
          // here we set the custom component and their props.
          customTextInput={Kaede}
          customTextInputProps={{
            style:{ width: '80%' },
            label:'Birthday'
          }}

          type={'datetime'}
          options={{
            format: 'DD-MM-YYYY HH:mm:ss'
          }}

          // don't forget: the value and state!
          onChangeText={birthday => this.setState({ birthday })}
          value={this.state.birthday} />
      </View>
    );
  }
}

const styles = StyleSheet.create({
	container: {
		flex: 1,
		backgroundColor: '#fff',
		alignItems: 'center',
		justifyContent: 'center'
	}
})

TextInput Props

You can use the native props of TextInput, with this in mind:

onChangeText is intercepted by component.
value is intercepted by component.
if you pass keyboardType, it will override the keyboardType of masked component.

TextInput Methods

If you want to use the methods of the native TextInput, use the getElement() method:

export default class App extends React.Component {
    onGoFocus() {
        // when you call getElement method, the instance of native TextInput will returned.
        this._myTextInputMask.getElement().focus()
    }

    render() {
        return (
            <View style={styles.container}>
                <View>
                    <TextInputMask
                        ref={ref => (this._myTextInputMask = ref)}
                        type={'only-numbers'}
                        style={styles.input}
                    />
                </View>
                <View>
                    <Button
                        onPress={this.onGoFocus.bind(this)}
                        title="Go Focus Hue"
                        color="#841584"
                    />
                </View>
            </View>
        )
    }
}

Options

Some types accept options, use it like this: <TextInputMask type={'money'} options={{ unit: 'US$' }} />

For type={'money'}

options={...}
- precision (Number, default 2): the decimal places.
- separator (String, default ','): the decimal separator.
- delimiter (String, default '.'): the thousand separator.
- unit: (String, default 'R$'): the prefix text.
- suffixUnit (String, default ''): the suffix text.
- zeroCents (Boolean, default false): if must show cents.

For type={'cel-phone'}

options={...}
- withDDD (Boolean, default true): if the ddd will be include in the mask.
- dddMask (String, default '(99) '): the default mask applied if withDDD is true.

For type={'datetime'}

options={...}
- format (String, default DD/MM/YYYY HH:mm:ss): moment date format. It accepts the following:
- DD/MM/YYYY HH:mm:ss
- DD/MM/YYYY
- MM/DD/YYYY
- YYYY/MM/DD
- HH:mm:ss
- HH:mm
- HH
- You can use all of dates with - instead of / if you want

For type={'custom'}

options={...}

{
	/**
	 * mask: (String | required | default '')
	 * the mask pattern
	 * 9 - accept digit.
	 * A - accept alpha.
	 * S - accept alphanumeric.
	 * * - accept all, EXCEPT white space.
	*/
	mask: '999#AAA',

	/**
	 * validator: (Function | optional | defaults returns true)
	 * use this funcion to inform if the inputed value is a valid value (for invalid phone numbers, for example). The isValid method use this validator.
	*/
	validator: function(value, settings) {
		return true
	},
	/**
	 * getRawValue: (Function | optional | defaults return current masked value)
	 * use this function to parse and return values to use what you want.
	 * for example, if you want to create a phone number mask (999) 999-99-99 but want to get only
	 * the numbers for value, use this method for this parse step.
	*/
	getRawValue: function(value, settings) {
		return 'my converted value';
	},
	/**
	 * translation: (Object | optional | defaults 9, A, S, *)
	 * the dictionary that translate mask and value.
	 * you can change defaults by simple override the key (9, A, S, *) or create some new.
	*/
	translation: {
		// this is a custom translation. The others (9, A, S, *) still works.
		// this translation will be merged and turns into 9, A, S, *, #.
		'#': function(val) {
			if (val === ' ') {
				return val;
			}

			// if returns null, undefined or '' (empty string), the value will be ignored.
			return null;
		},
		// in this case, we will override build-in * translation (allow all characters)
		// and set this to allow only blank spaces and some special characters.
		'*': function(val) {
			return [' ', '#', ',', '.', '!'].indexOf(val) >= 0 ? val : null;
		}
	}
}

For type={'credit-card'}

options={...} * obfuscated (Boolean, default false): if the mask must be 9999 **** **** 9999

Methods

getElement(): return the instance of TextInput component.
isValid(): if the value inputed is valid for the mask.
- credit-card: return true if the mask is complete.
- cpf: return true if the mask is complete and cpf is valid.
- cnpj: return true if the mask is complete and cnpj is valid.
- zip-code: return true if the mask is complete.
- only-numbers: always returns true.
- money: always returns true.
- cel-phone: return true if the mask is complete.
- datetime: return true if the date value is valid for format.
- custom: use custom validation, if it not exist, always returns true.
getRawValue(): get the converted value of mask.
- credit-card: return the array with the value parts. Ex: 1234 1234 1234 1234 returns [1234, 1234, 1234, 1234].
- cpf: return the value without mask.
- cnpj: return the value without mask.
- zip-code: return the value without mask.
- only-numbers: return the value without mask.
- money: return the Number value. Ex: R$ 1.234,56 returns 1234.56.
- cel-phone: return the value without mask.
- datetime: return the moment object for the date and format.
- custom: use custom method (passed in options). If it not exists, returns the current value.

Sample usage:

import React, { Component } from 'react'
import { StyleSheet, View } from 'react-native'
import { TextInputMask } from 'react-native-masked-text'

export default class App extends Component {
    state = {
        datetime: ''
    }
    render() {
        return (
            <View style={styles.container}>
                <TextInputMask
                    {/*First, set the reference*/}
                    ref={ref => (this._myDatetimeField = ref)}
                    style={styles.input}
                    type={'datetime'}
                    options={{
                        format: 'DD-MM-YYYY HH:mm:ss'
                    }}
                    placeholder={'datetime DD-MM-YYYY HH:mm:ss'}
                    value={this.state.datetime}
                    onChangeText={datetime => {
                        this.setState({ datetime })

                        // Now just use =)
                        console.log(this._myDatetimeField.getElement())
                        console.log(this._myDatetimeField.isValid())
                        console.log(this._myDatetimeField.getRawValue())
                    }}
                />
            </View>
        )
    }
}

const styles = StyleSheet.create({
    container: {
        flex: 1,
        justifyContent: 'center',
        alignItems: 'center',
        backgroundColor: '#F5FCFF'
    },
    input: {
        height: 50,
        width: '80%',
        borderColor: 'steelblue',
        borderWidth: 2
    }
})

Usage (TextMask)

import React, { Component } from 'react'

// import the component
import { TextMask } from 'react-native-masked-text'

export default class MyComponent extends Component {
    constructor(props) {
        super(props)
        this.state = {
            text: '4567123409871234'
        }
    }

    render() {
        // the type is required but options is required only for some specific types.
        // the sample below will output 4567 **** **** 1234
        return (
            <TextMask
                value={this.state.text}
                type={'credit-card'}
                options={{
                    obfuscated: true
                }}
            />
        )
    }
}

Props

The same of TextInputMask, but for React-Native Text component instead TextInput.

Warning: if the value not match the mask, it will not appear.

Methods

getElement(): return the instance of Text component.

Extra (MaskService)

If you want, we expose the MaskService. You can use it:

Methods

static toMask(type, value, settings): mask a value.
- type (String, required): the type of the mask (cpf, datetime, etc...)
- value (String, required): the value to be masked
- settings (Object, optional): if the mask type accepts options, pass it in the settings parameter
static toRawValue(type, maskedValue, settings): get the raw value of a masked value.
- type (String, required): the type of the mask (cpf, datetime, etc...)
- maskedValue (String, required): the masked value to be converted in raw value
- settings (Object, optional): if the mask type accepts options, pass it in the settings parameter
static isValid(type, value, settings): validate if the mask and the value match.
- type (String, required): the type of the mask (cpf, datetime, etc...)
- value (String, required): the value to be masked
- settings (Object, optional): if the mask type accepts options, pass it in the settings parameter
static getMask(type, value, settings): get the mask used to mask the value

Ex:

import { MaskService } from 'react-native-masked-text'

var money = MaskService.toMask('money', '123', {
    unit: 'US$',
    separator: '.',
    delimiter: ','
})

// money -> US$ 1.23

Throubleshooting

If the es2015 error throw by babel, try run react-native start --reset-cache

react-native-masked-text

Supported Versions

Install

Usage (TextInputMask)

Props

type

onChangeText

checkText

customTextInput

customTextInputProps

TextInput Props

TextInput Methods

Options

Methods

Usage (TextMask)

Props

Methods

Extra (MaskService)

Throubleshooting

GitHub