burnoo

Kotlin Flow - custom result retry

Maybe I will write article about this

API:

internal fun <T, R> Flow<T>.retryMap(
    map: suspend (T) -> R,
    predicate: suspend FlowCollector<R>.(value: T, result: R, attempt: Int) -> Boolean
): Flow<R> {
    var retryCount = 1

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dependencies {
    implementation "dev.burnoo:cokoin:0.3.2"
    // REMOVE "org.koin:koin-androidx-compose:X.Y.Z" if you were using it
}

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val appModule = module {
    single { AppData() }
}

class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContent {
            Koin(appDeclaration = { modules(appModule) }) {
                val appData = get<AppData>()

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@Composable
fun Hello() {
     val hello = get<Hello>()
     Text(hello.text)
}

val previewModule = module {
     factory { Hello(text = "preview hello text") }
}

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data class A(val value: String)

val scopedModule = module {
    scope<ScopeTypeA> {
        scoped { A("scopeA") }
    }
    scope<ScopeTypeB> {
        scoped { A("scopeB") }
    }
}

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Basic Applications Elements

Android	HarmonyOS	Notes / Usage
Application	AbilityPackage

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@Composable
fun App() {
    val globalData = get<AppData>() // uses Global KoinContext
    Koin(koinApplication) {
        val localData = get<AppData>() // uses Local KoinContext (koinApplication)
    }
}

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val module = module {
    viewModel { AppViewModel() }
}

Koin(appDeclaration = { modules(module) }) {
    val viewModel = getViewModel<AppViewModel>()
    Text(viewModel.text)
}

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@Composable
fun Screen1(navController: NavController) {
    val rootViewModel = getViewModel<RootViewModel>(
        viewModelStoreOwner = navController.getBackStackEntry("root")
    )
}

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private class MutableStateAdapter<T>(
    private val state: State<T>,
    private val mutate: (T) -> Unit
) : MutableState<T> {

    override var value: T
        get() = state.value
        set(value) {
            mutate(value)
        }