adesamp

// init SharedPreferences
 companion object {
        private const val NAME_KEY = "NAME_KEY"
}
private val preferences = activity.getSharedPreferences("pref_name", Context.MODE_PRIVATE)
private val editor = preferences.edit()

var name: String
// get/load value
        get() {

adesamp

class MainActivity : AppCompatActivity() {
    private lateinit var bmiBrain: BmiBrain

    // initialize class
    bmiBrain = BmiBrain(this)
  
    // load value
    binding.apply {
      edtName.setText(bmiBrain.name)
    }

adesamp

// inisialisasi
companion object {
        private val NAME_KEY = stringPreferencesKey("NAME_KEY")
}
private val Context._dataStore: DataStore<Preferences> by preferencesDataStore(
        name = "sampingan_data_store",
        produceMigrations = ::sharedPreferencesMigration
    )

private fun sharedPreferencesMigration(context: Context) =

adesamp

fun <T> DataStore<Preferences>.getValueFlow(
    key: Preferences.Key<T>,
    defaultValue: T,
): Flow<T> {
    return this.data
        .catch { exception ->
            if (exception is IOException) {
                emit(emptyPreferences())
            } else {
                throw exception

adesamp

// inisialisasi
companion object {
        private val NAME_KEY = stringPreferencesKey("NAME_KEY")
}

    private val Context._dataStore: DataStore<Preferences> by preferencesDataStore(
        name = "sampingan_data_store",
        produceMigrations = ::sharedPreferencesMigration
    )

adesamp

class MainActivity : AppCompatActivity() {
    private lateinit var bmiBrain: BmiBrain

    // initialize class
    bmiBrain = BmiBrain(this)
  
    // load value
    binding.apply {
        lifecycleScope.launch {
            val name = async { bmiBrain.getName() }

adesamp

implementation "androidx.datastore:datastore-preferences:1.0.0-alpha08"

adesamp

class MainViewModel(private val dataStore: DataStore<Preferences>) : ViewModel() {

    private val _name = MutableLiveData<String>()
    val name: LiveData<String>
        get() = _name

    fun fetch() {
            viewModelScope.launch {
                dataStore.data
                    .catch { _name.postValue(it.message) }

adesamp

class MainActivity : AppCompatActivity() {

  // initialize view model, in this case using koin extension
  private val viewModel: MainViewModel by viewModel()
  
  // observe value
  viewModel.name.observe(this, ::setName)
  private fun setName(name: String?) = binding.edtName.setText(name)
  
  // fetch data on the first time / activtity created

adesamp

    @Test
    fun `Join Test`() {
        runBlocking {
            val job : Job = launch { println(Thread.currentThread().name) }
            job.join()
        }
    }

    @Test
    fun `JoinAll Test`() {