John Li JohnLeeroy

Hexadecimal color code for transparency

For example, you want to set 40% alpha transparence to #000000 (black color), you need to add 66 like this #66000000.

	import androidx.lifecycle.Lifecycle
	import androidx.lifecycle.LifecycleObserver
	import androidx.lifecycle.OnLifecycleEvent

	class MVPLifecycleObserver<VIEW : BaseView<PRESENTER>, PRESENTER : BasePresenter<VIEW>>(
	private val view: VIEW,
	private val presenter: PRESENTER,
	private val retainedState: RetainedState
	) : LifecycleObserver {

	import androidx.lifecycle.SavedStateHandle
	import androidx.lifecycle.ViewModel

	class RetainedState(private val state: SavedStateHandle) : ViewModel() {

	fun <T> get(key: String): T? {
	return state.get(key)
	}

	fun <T> remove(key: String): T? {

	import androidx.annotation.CallSuper

	interface PresenterContract<VIEW> {
	fun attach(view: VIEW, retainedState: RetainedState)
	fun detach()
	fun onViewAttached()
	fun onViewDetached()
	}

	abstract class BasePresenter<VIEW>: PresenterContract<VIEW> {

	interface AppRepository {
	suspend fun getAppById(id: Long): AppDetail
	suspend fun getAppsByPublisher(publisherId: Long): List<AppDetail>
	}

	class AppApiRepository(private val api: AppApi) : AppRepository {
	override suspend fun getAppById(id: Long): AppDetail { /.../ }
	override suspend fun getAppsByPublisher(publisherId: Long): List<AppDetail> { /.../ }
	}

	data class AppDetail(
	val id: Long,
	val name: String,
	val description: String,
	val publisher: Publisher
	)

	interface ResultCallback<T> {
	fun onSuccess(result: T)
	fun onError(exception: Exception)

	interface BaseView<PRESENTER> {
	fun getPresenter(): PRESENTER
	}

	class KataTest {

	@Test
	fun testStringInvokeOverride() {
	val arg = "somearg"
	val result = "SomeThing"(arg)
	assert.true(result, arg)
	}

	operator fun <T> String.invoke(arg : T) : T{

	<?xml version="1.0" encoding="utf-8"?>
	<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
	xmlns:app="http://schemas.android.com/apk/res-auto"
	android:layout_width="match_parent"
	android:layout_height="match_parent">

	<View
	android:id="@+id/video_view"
	android:layout_width="0dp"
	android:layout_height="0dp"

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