Andrew Steinmetz plusmobileapps

Kotlin Multiplatform & Android Developer

plusmobileapps / CustomTextField.kt

Created June 9, 2022 15:48

CustomTextField with non standard hint not embedded in outline

	/**
	* MIT License
	*
	* Copyright (c) 2022 Andrew Steinmetz
	*
	* Permission is hereby granted, free of charge, to any person obtaining a copy
	* of this software and associated documentation files (the "Software"), to deal
	* in the Software without restriction, including without limitation the rights
	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	* copies of the Software, and to permit persons to whom the Software is

plusmobileapps / MutableSaveStateFlow.kt

Last active December 22, 2021 18:09

MutableSaveStateFlow - a workaround of using the SavedStateHandle with a StateFlow

	class MutableSaveStateFlow<T>(
	private val savedStateHandle: SavedStateHandle,
	private val key: String,
	defaultValue: T
	) {
	private val _state: MutableStateFlow<T> =
	MutableStateFlow(savedStateHandle.get<T>(key) ?: defaultValue)

	var value: T
	get() = _state.value

plusmobileapps / MainViewModel.kt

Last active December 11, 2018 07:40

	class MainViewModel (private val stateReducer: StateReducer,
	private val countryRepository: CountryRepository
	) : ViewModel(), MainView {

	private val bigCards: LiveData<List<Card>> = Transformations.map(countryRepository.getAll()) { countries ->
	return@map countries.map { country ->
	Card(country.id!!, country.name, country.imageUrl, country.description)
	}
	}

plusmobileapps / MainFragment.kt

Created December 11, 2018 07:31

	class MainFragment : Fragment() {

	val viewModel: MainViewModel by viewModel()

	override fun onActivityCreated(savedInstanceState: Bundle?) {
	super.onActivityCreated(savedInstanceState)

	val adapter = RecyclerViewListAdapter(
	carouselItemClickListener = { viewModel.onCarouselItemClicked(it) },
	cardClickListener = { viewModel.onCardClicked(it) },

plusmobileapps / Viewholders.kt

Created December 11, 2018 07:23

	abstract class BaseViewHolder<T>(itemView: View) : RecyclerView.ViewHolder(itemView) {

	abstract fun bind(data: T)

	}

	class CardViewHolder(itemView: View,
	private val glide: RequestManager,
	private val clickListener: (DataWrapper.CardData) -> Unit,
	private val deleteListener: (DataWrapper.CardData) -> Unit) : BaseViewHolder<DataWrapper.CardData>(itemView) {

plusmobileapps / RecyclerViewListAdapter.kt

Created December 11, 2018 07:15

	class RecyclerViewListAdapter(
	private val carouselItemClickListener: (CarouselItem) -> Unit,
	private val cardClickListener: (DataWrapper.CardData) -> Unit,
	private val cardDeleteListener: (DataWrapper.CardData) -> Unit,
	private val glide: RequestManager
	) : ListAdapter<DataWrapper, BaseViewHolder<*>>(
	RecyclerViewDiffUtil()
	) {

	override fun getItemViewType(position: Int): Int {

plusmobileapps / RecylerViewDiffUtil.kt

Created December 11, 2018 07:08

	class RecyclerViewDiffUtil : DiffUtil.ItemCallback<DataWrapper>() {

	override fun areItemsTheSame(oldItem: DataWrapper, newItem: DataWrapper): Boolean {
	return oldItem.id == newItem.id
	}

	override fun areContentsTheSame(oldItem: DataWrapper, newItem: DataWrapper): Boolean {
	return oldItem == newItem
	}
	}

plusmobileapps / DataWrapper.kt

Last active December 11, 2018 07:01

	sealed class DataWrapper {
	abstract val id: Int

	data class CarouselData(override val id: Int = UUID.randomUUID().hashCode(), val items: List<CarouselItem>) :
	DataWrapper()

	data class CardData(override val id: Int, val header: String, val imageUrl: String, val body: String) :
	DataWrapper()
	}