inKindCards / react-native-money

React Native Money

A fully native TextInput component that allows multilingual currency input
with a right to left text alignment.

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What is this?

React Native Money is a simple component library that exposes a fully native TextInput component that uses currency formatting libraries provided with Android and iOS, so as well as being performant it is also lightweight on your binary sizes. The component has an identitical prop signature and API to the default TextInput provided with React Native, The only difference is that the value prop accepts a Number type and onChangeText returns a number value and formatted string.

npm install @inkindcards/react-native-money

iOS Installation:

Make sure to add the following to your Podfile before running npx pod-install:

pod 'React-RCTText', :path => '../node_modules/react-native/Libraries/Text', :modular_headers => true

Manual Installation

iOS

1. In XCode, in the project navigator, right click Libraries ➜ Add Files to [your project's name]
2. Go to node_modules ➜ react-native-money and add RNMoneyInput.xcodeproj
3. In XCode, in the project navigator, select your project. Add libRNMoneyInput.a to your project's Build Phases ➜ Link Binary With Libraries
4. Run your project (Cmd+R)

Android

1. Open up android/app/src/main/java/[...]/MainActivity.java

• Add import com.inkind.RNMoneyInput.RNMoneyInputPackage; to the imports at the top of the file
• Add new RNMoneyInputPackage() to the list returned by the getPackages() method

2. Append the following lines to android/settings.gradle:

   include ':inkindcards_react-native-money'
   project(':inkindcards_react-native-money').projectDir = new File(rootProject.projectDir, 	'../node_modules/@inkindcards/react-native-money/android')
   

3. Insert the following lines inside the dependencies block in android/app/build.gradle:

   compile project(':react-native-money')
   

Usage

You use the MoneyInput component like a normal TextInput from the React Native library with the exception that you pass a number to the value prop. You can also pass a locale idenitifer which is composed of the language along with the country, this in turn will change the how the currency is formatted, All possible locales can be read about here: Currency Locale Reference.

import {useState} from 'react'
import MoneyInput from '@inkindcards/react-native-money'

const App = () => {
  const [bill, setBill] = useState<number>()

  return (
    <MoneyInput 
      value={bill} 
      locale='en_US'
      placeholder='$0.00'
      onChangeText={(value: number, label: string) => {
        setBill(value)
      }}
    />
  )

}

Testing

Make sure to mock the following to jest.setup.js:

jest.mock('react-native-money', () => ({
    default: jest.fn(),
}))

Inspiration

We'd like to express thanks to the developers of react-native-text-input-mask as this project started as a fork of that repo as their approach in monkeypatching the TextInput delegate was exactly what we needed.

Versioning

This project uses semantic versioning: MAJOR.MINOR.PATCH. This means that releases within the same MAJOR version are always backwards compatible. For more info see semver.org.

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