This is a Rust version of MMKV.
By default, this lib uses CRC8 to check data integrity.
If include feature encryption, this lib will encrypt
the data with AES-EAX.
MMKV is thread-safe but cannot guarantee cross-process data consistency (still under development). If you want to use it in a cross-process scenario, please ensure that there is no competing write.
Add dependency:
cargo add mmkv
And use MMKV directly:
```rust
use mmkv::MMKV;
fn main() { // initialize it with a directory, // the library will crate a file, // named "minimmkv" under this dir MMKV::initialize("."); MMKV::puti32("key1", 1); // Ok(1) println!("{:?}", MMKV::geti32("key1")); MMKV::putstr("key1", "value"); // Err(Error::KeyNotFound), cause "key1" was override by putstr println!("{:?}", MMKV::geti32("key1")); // Ok("value") println!("{:?}", MMKV::getstr("key1")); MMKV::putbool("key1", true); // Ok(true) println!("{:?}", MMKV::getbool("key1")); // close the instance if you need to re-initialize with different config. // MMKV::close(); // clear all related data to free disk space, this call will also close the instance. // MMKV::cleardata(); } ```
Add dependency:
cargo add mmkv --features encryption
Then init MMKV with an encryption credential:
MMKV::initialize(".", "88C51C536176AD8A8EE4A06F62EE897E")
Encryption will greatly reduce the efficiency of reading and writing, and will also increase the file size, use at your own risk!
Add lib dependency to gradle:
kotlin
dependencies {
implementation("net.yangkx:mmkv:0.1.9.1")
// Or another one with encryption feature
// implementation("net.yangkx:mmkv-encrypt:0.1.9.1")
}
Use the kotlin API:
```kotlin
class MyApplication : Application() {
override fun onCreate() {
super.onCreate()
val dir = this.getDir("mmkv", Context.MODE_PRIVATE)
MMKV.initialize(dir.absolutePath)
// If you are using mmkv with encryption
// MMKV.initialize(dir.absolutePath, "88C51C536176AD8A8EE4A06F62EE897E")
}
}
class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) binding = ActivityMainBinding.inflate(layoutInflater) setContentView(binding.root) MMKV.putString("firstkey", "first value") MMKV.putInt("secondkey", 1024) MMKV.putBool("thirdkey", true) binding.string.text = MMKV.getString("firstkey", "default") binding.integer.text = MMKV.getInt("secondkey", 0).toString() binding.bool.text = MMKV.getBool("thirdkey", false).toString() } } ``` Check the android demo for more detail.