MMKV

ohpm install @ohos/mmkv

MMKV.initialize(rootPath, cachePath)

let mmkv = MMKV.getBackedUpMMKVWithID(mmapID, MMKV.SINGLE_PROCESS_MODE, "Tencent MMKV", backupRootDir);

mmkv.encodeBool('boolData', false)
mmkv.encodeNumber('numberData', 3.0122)
mmkv.encodeString('stringData', 'dsfsg')
let set1 = new Set<string>()
set1.add('ass1')
mmkv.encodeSet('setData', set1)

mmkv.decodeBool('boolData')
mmkv.decodeNumber('stringData')
mmkv.decodeString('numberData')
mmkv.decodeSet('setData')

class MyClass extends SerializeBase{
    @Serialize()
    public code: number = 0;
    public title: string = 'titles';
    @Serialize()
    public description: string = 'descs';
}

let myClass1 = new MyClass(1, 't1', 'desc1')
kv.encodeSerialize('serialize111', myClass1)

let myClass2 = kv.decodeSerialize('serialize111', new MyClass())

//name:context：上下文, preference文件名, callback：异步回调
preferencesToMMKV(name: string, callback: ICallBack, context: Context)

mmkv.reCryptKey('Key_seq_1') //Key_seq_1：加密密钥

MMKV.backupOneToDirectory(mmapID, backupRootDir, otherDir)//mmapID：需要备份的mmapID；backupRootDir：备份到目标路径；otherDir：待备份所在路径

MMKV.backupAllToDirectory(backupRootDir) //backupRootDir：备份到目标路径

MMKV.restoreOneMMKVFromDirectory(mmapID, srcDir, otherDir)//mmapID：需要恢复的mmapID；srcDir：目标路径；otherDir：待备份所在路径

MMKV.restoreAllFromDirectory(srcDir) //srcDir： 目标路径

mmkv.clearAll()

|----MMMKV
|     |---- entry  # 示例代码文件夹
|     |---- library  # MMMKV库文件夹
|           |---- index.ets  # 对外接口
|     |---- README.md  # 安装使用方法