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https://github.com/dsibiski/react-native-userdefaults-ios

React Native Module for NSUserDefaults
https://github.com/dsibiski/react-native-userdefaults-ios

Last synced: 2 months ago
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React Native Module for NSUserDefaults

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## react-native-userdefaults-ios [![Build Status](https://travis-ci.org/dsibiski/react-native-userdefaults-ios.svg?branch=master)](https://travis-ci.org/dsibiski/react-native-userdefaults-ios)

React Native Module for [NSUserDefaults](https://developer.apple.com/library/ios/documentation/Cocoa/Reference/Foundation/Classes/NSUserDefaults_Class/)



This library is especially helpful for hybrid apps that already make use of `[NSUserDefaults standardUserDefaults]` and would like to read or write to it from within their React components.



[![NPM](https://nodei.co/npm/react-native-userdefaults-ios.png?downloads=true&downloadRank=true&stars=true)](https://nodei.co/npm/react-native-userdefaults-ios/)



### Add it to your project



1. Run `npm install react-native-userdefaults-ios --save`

2. Open your project in XCode, right click on `Libraries` and click `Add

   Files to "Your Project Name"`.

3. Select the `RNUserDefaultsIOS.xcodeproj` file in the `node_modules/react-native-userdefaults-ios` folder and click `Add`

4. In the Xcode Project Navigator, select your project and add `libRNUserDefaultsIOS.a` from the `Libraries/RNUserDefaultsIOS.xcodeproj/Products` folder to `Build Phases -> Link Binary With Libraries`.

5. Follow the implementation example below...



### Example



```javascript

// Require the library...

var UserDefaults = require('react-native-userdefaults-ios');

```



#### Writing to `standardUserDefaults`

```javascript

//Set an Array...

var arr = ['1', '2', '3'];

UserDefaults.setArrayForKey(arr, 'keyForMyArray')

    .then(result => {

        console.log(result);

    });



// Set a String...

UserDefaults.setStringForKey('myString', 'keyForMyString')

    .then(result => {

        console.log(result);

    });



//Set an Object...

var obj = {

    name: 'Dave'

};

UserDefaults.setObjectForKey(obj, 'keyForMyObject')

    .then(result => {

        console.log(result);

    });



//Set a boolean value...

UserDefaults.setBoolForKey(true, 'keyForMyBool')

    .then(result => {

        console.log(result);

    });



//Remove an item (works for any type)...

UserDefaults.removeItemForKey('keyOfItemToRemove')

    .then(result => {

        console.log(result);

    });

```



#### Reading from `standardUserDefaults`

```javascript

// Get an array for a given key...

UserDefaults.arrayForKey('keyForMyArray')

    .then(array => {

        //Do something with the returned array...

        array.forEach(item => {

            console.log(item);

        });

    });



// Get a string for a given key...

UserDefaults.stringForKey('keyForMyString')

    .then(string => {

        //Do something with the returned string...

        console.log(string);

    });



// Get an object for a given key...

UserDefaults.objectForKey('keyForMyObject')

    .then(obj => {

        //Do something with the returned object...

        console.log(obj);

    });



// Get a boolean value for a given key...

UserDefaults.boolForKey('keyForMyBool')

    .then(bool => {

        //Do something with the returned boolean value...

        console.log(bool);

    });

```



### Todos for 1.0 release



- [ ] Implement `dataForKey:`

- [ ] Implement `stringArrayForKey:`

- [ ] Implement `setFloat:forKey:`

- [ ] Implement `floatForKey:`

- [ ] Implement `setInteger:forKey:`

- [ ] Implement `integerForKey:`

- [ ] Implement `setDouble:forKey:`

- [ ] Implement `doubleForKey:`

- [ ] Implement `setURL:forKey:`

- [ ] Implement `URLForKey:`

- [ ] Implement `NSUserDefaultsDidChangeNotification`



### Todos for 0.1.0 release - DONE!



- [x] Implement `arrayForKey:`

- [x] Implement `stringForKey:`

- [x] Implement `setObject:forKey:`

- [x] Implement `objectForKey:`

- [x] Implement `removeObjectForKey:`

- [x] Implement `dictionaryForKey:` Note: This was taken care of with `objectForKey` since in JS an Object is a Dictionary in Obj-C

- [x] Implement `setBool:forKey:`

- [x] Implement `boolForKey:`