Built on Tencent's MMKV and JSI. Any data type, any number of databases, with or without encryption.
npm install react-native-mmkv-storagecd ios && pod installimport { MMKVLoader } from 'react-native-mmkv-storage';
const storage = new MMKVLoader().initialize();
storage.setString('user', 'ammar');
storage.setInt('age', 24);
storage.setMap('settings', { theme: 'dark' });
storage.getString('user'); // => "ammar"
storage.getMap('settings'); // => { theme: "dark" }import { MMKVLoader, useMMKVStorage } from 'react-native-mmkv-storage';
import { Text, TouchableOpacity } from 'react-native';
const storage = new MMKVLoader().initialize();
export default function Profile() {
const [user, setUser] = useMMKVStorage('user', storage, 'anonymous');
return (
<TouchableOpacity onPress={() => setUser('ammar')}>
<Text>{user}</Text>
</TouchableOpacity>
);
}Any write to user â from this component, another component, or plain non-React code â updates every hook watching that key.
import { MMKVLoader } from 'react-native-mmkv-storage';
const secure = new MMKVLoader().withInstanceID('secure').withEncryption().initialize();
secure.setString('token', 'a-secret-value');The encryption key is generated for you and stored in the Keychain or Keystore, then retrieved automatically on the next launch.
| Architecture | React Native |
|---|---|
| New architecture | 0.75+, tested up to 0.87 |
| Old architecture | 0.71+ |
Codegen specs are generated by your app at build time, so the library always compiles against the React Native version your app uses.