How to know List Size? ANDROID KOTLIN

Question

ANDROID KOTLIN : Next: I have my Data Class with its variables,I make a call to the api and I get in my Adapter the list size to add to my attributes in xml ok.. wanted in Activity I put the amount of items I received from the api for example: if there are 3 items created in the layout show: there are 3 pending tasks and etc...

insira o código aqui

Moving class Downloadapter2 : Recyclerview.Adapter<Moving>() {

val mRetornaItens: MutableList<RetornaItensModel2> = mutableListOf()


inner class MovimentacaoVh2(itemView: View) : RecyclerView.ViewHolder(itemView) {
    fun bind(retornaItensModel2: RetornaItensModel2) {
        itemView.txt_api_numeroserie.text = retornaItensModel2.numeroSerie
        itemView.txt_api_endereço.text = retornaItensModel2.enderecoVisual
        itemView.txt_api_data.text = formatDate(retornaItensModel2.dataInclusao)
    }
}

fun formatDate(date: String): String {
    val dateTime =
        LocalDateTime.parse(date, DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'"))
    val formatter = DateTimeFormatter.ofPattern("dd/MM/yy - HH:mm")
    val formatted = dateTime.format(formatter)
    return formatted.toString()
}

override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): MovimentacaoVh2 {
    val inflate = LayoutInflater.from(parent.context)
        .inflate(R.layout.item_retorna_itens_mov2, parent, false)
    return MovimentacaoVh2(inflate)
}

override fun onBindViewHolder(holder: MovimentacaoVh2, position: Int) {
    holder.bind(mRetornaItens[position])
}

override fun getItemCount() = mRetornaItens.size


fun Update(it: List<RetornaItensModel2>) {
    mRetornaItens.addAll(it)
    notifyDataSetChanged()
}

fun remove(position: Int) {
    mRetornaItens.removeAt(position)
    notifyItemRemoved(position)
    notifyDataSetChanged()
}

In my book I wanted to do this: val Sizelits.text = "Total pensent tasks : ${ ......}"

Answer 1

You can simply pull the list from your Adapter for this. Ex.:

val listaTarefas = movimentacaoAdapter2.mRetornaItens
val SizeLits.text = "Total de tarefas pensentes : ${listaTarefas.size()}"

This is how I do in situations I need the Adapter list. I hope I’ve helped, see you more.