Я пытаюсь использовать RecyclerView, чтобы показать массив значений в CardView
s в определенном порядке, например, «Название A» и «Субтитры A» в 1 CardView
;«Название B» и «Подзаголовок B» в другом.Есть ли способ получить значения из массивов в моем фрагменте, не создавая новый подробный класс, или мне нужно использовать data class
, чтобы достичь этого?
Класс фрагмента
class MyFragment : androidx.fragment.app.Fragment() {
private lateinit var mRecyclerView: RecyclerView
override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
return inflater.inflate(R.layout.fragment_rv, container, false)
}
override fun onActivityCreated(savedInstanceState: Bundle?) {
val v = view
mRecyclerView = v!!.findViewById<RecyclerView>(R.id.my_recyclerview)
mRecyclerView.layoutManager = LinearLayoutManager(activity)
val myList = mutableListOf(
RVAdapterTConnections.ITEM_A,
RVAdapterTConnections.ITEM_B,
RVAdapterTConnections.ITEM_B
)
val titlesList = mutableListOf(
"Title A",
"Title B"
)
val subtitlesList = mutableListOf(
"Subtitle A",
"Subtitle B"
)
val mAdapter = MyRVAdapter(myList, titlesList)
mRecyclerView.adapter = mAdapter
super.onActivityCreated(savedInstanceState)
}
}
Класс адаптера
internal class MyRVAdapter(private val listViewType: List<Int>, private val myList: List<CharSequence>) : RecyclerView.Adapter<MyRVAdapter.ViewHolder>() {
companion object {
const val ITEM_A = 1
const val ITEM_B = 2
}
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
val inflater = LayoutInflater.from(parent.context)
return when (viewType) {
ITEM_A -> ViewHolderItemA(inflater.inflate(R.layout.layout_item_a, parent, false))
else -> ViewHolderItemB(inflater.inflate(R.layout.layout_item_b, parent, false))
}
}
override fun onBindViewHolder(holder: ViewHolder, position: Int) {
val viewType = listViewType[position]
when (viewType) {
ITEM_A -> {
val viewHolderA = holder as ViewHolderItemA
viewHolderA.textView.text = "Lorem Ipsum"
}
ITEM_B -> {
val viewHolderB = holder as ViewHolderItemB
viewHolderB.ivExpandCollapse.setImageDrawable(ContextCompat.getDrawable(holder.ivExpandCollapse.context, R.drawable.ic_keyboard_arrow_down))
viewHolderB.tvTitle.text = titlesList[position]
viewHolderB.tvSubtitle.text = subtitlesList[position]
}
else -> {
val viewHolderA = holder as ViewHolderItemA
viewHolderA.textView.text = "Lorem Ipsum"
}
}
}
override fun getItemCount(): Int = listViewType.size
override fun getItemViewType(position: Int): Int = listViewType[position]
open inner class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView)
inner class ViewHolderItemA(itemView: View) : ViewHolder(itemView) {
val textView: TextView = itemView.findViewById(R.id.my_custom_tv)
}
inner class ViewHolderItemB(itemView: View) : ViewHolder(itemView) {
val tvTitle: TextView = itemView.findViewById(R.id.tv_title)
val tvSubtitle: TextView = itemView.findViewById(R.id.tv_subtitle)
}
}
Класс данных
data class MyItem (val title: String, val subtitle: String)