react-native-default-preference

Use SharedPreferences (Android) and UserDefaults (iOS) with React Native over a unified interface. All data is stored as a string. If you need to support more complex data structures, use serialization/deserialization (e.g. JSON).

Getting started

$ npm install react-native-default-preference --save

React Native >= 0.60

$ cd ios && pod install

React Native <= 0.59

$ react-native link react-native-default-preference

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-default-preference and add RNDefaultPreference.xcodeproj
3. In XCode, in the project navigator, select your project. Add libRNDefaultPreference.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/[...]/MainApplication.java
   • Add import com.kevinresol.react_native_default_preference.RNDefaultPreferencePackage; to the imports at the top of the file
   • Add new RNDefaultPreferencePackage() to the list returned by the getPackages() method
2. Append the following lines to android/settings.gradle:

      include ':react-native-default-preference'
      project(':react-native-default-preference').projectDir = new File(rootProject.projectDir,     '../node_modules/react-native-default-preference/android')

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

      compile project(':react-native-default-preference')

Usage

import DefaultPreference from 'react-native-default-preference';

DefaultPreference.get('my key').then(function(value) {console.log(value)});
DefaultPreference.set('my key', 'my value').then(function() {console.log('done')});

API

function get(key: string): Promise<string | undefined | null>;
function set(key: string, value: string): Promise<void>;
function clear(key: string): Promise<void>;
function getMultiple(keys: string[]): Promise<string[]>;
function setMultiple(data: {[key: string]: string}): Promise<void>;
function clearMultiple(keys: string[]): Promise<void>;
function getAll(): Promise<{[key: string]: string}>;
function clearAll(): Promise<void>;

/** Gets and sets the current preferences file name (android) or user default suite name (ios) **/
function getName(): Promise<string>;
function setName(name: string): Promise<void>;

Cordova Native Storage Compatibility

This module is compatible with cordova-plugin-native-storage.

Android

You need to use the same SharedPreference as in the cordova plugin, to do so add the following line:

import { Platform } from 'react-native';
// ...
if (Platform.OS === 'android') DefaultPreference.setName('NativeStorage');

iOS

You don't need to change the name, as cordova-plugin-native-storage uses the default value.