android - 添加 setTextColor 后，OnItemClickListener 在 recyclerView 中无法正常工作？

问题描述

我有一个包含 recyclerview 的片段，它显示了 cardviews 中的时间段，如下所示

我想要什么：如果用户单击卡片视图，则单词 Available 更改为 Full 并且文本颜色变为红色，如下图所示单击 7:30 插槽

问题：在 onbindViewHolder 中将 setTextColor() 添加到 textview 后，更改（文本为“Full”，颜色为红色）适用于点击的卡片，但是当我滚动 recyclerview 时，我发现另一张卡片将文本颜色更改为红色而不改变在随机位置发短信到“完整”！

我的适配器代码： class TimeSlotAdapter(private val timeSlotsList: ArrayList): RecyclerView.Adapter() {

private var mListener: OnItemClickListener? = null

interface OnItemClickListener {
          fun onItemClick(position: Int)
}

fun setOnItemClickListener (listener: OnItemClickListener) {
    mListener = listener
}

class TimeSlotViewHolder(card: View, listener: OnItemClickListener?): RecyclerView.ViewHolder(card){

    var mCardTime: TextView = card.findViewById(R.id.timeTV)
    var mAvailability: TextView = card.findViewById(R.id.availabilityTV)

    init {

        card.setOnClickListener {
            if (listener != null) {
                val position = adapterPosition
                if (position != RecyclerView.NO_POSITION) {
                    listener.onItemClick(position)
                }
            }
        }
    }
}

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

override fun getItemCount(): Int = timeSlotsList.size

override fun onBindViewHolder(holder: TimeSlotViewHolder, position: Int) {
    val currentItem = timeSlotsList[position]

    holder.mCardTime.text = currentItem.cardTime
    holder.mAvailability.text = currentItem.availability

    if (currentItem.isSelected) {

    // the problem when I add the below
        holder.mAvailability.setTextColor(Color.RED)
    }
}

活动片段代码： 类 ReserveTimeFragment : Fragment() {

private var timeSlotsList: ArrayList<TimeSlot>? = null

private var mRecyclerView: RecyclerView? = null
private var mAdapter: TimeSlotAdapter? = null
private var mLayoutManager: RecyclerView.LayoutManager? = null

override fun onCreateView(
    inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {

    val view = inflater.inflate(R.layout.fragment_reserve_time, container, false)

    mRecyclerView = view.findViewById(R.id.recyclerViewLO)

    createTimeSlotsList()
    buildRecyclerView()

    return view
}

fun buildRecyclerView() {
    mRecyclerView!!.setHasFixedSize(true)
    mLayoutManager = LinearLayoutManager(activity)
    mAdapter = TimeSlotAdapter(timeSlotsList!!)

    mRecyclerView!!.layoutManager = mLayoutManager
    mRecyclerView!!.adapter = mAdapter

    mAdapter!!.setOnItemClickListener(object : TimeSlotAdapter.OnItemClickListener {
        override fun onItemClick(position: Int) {
            selectedItem(position, "Full", false)
        }
    })
}

fun selectedItem(position: Int, text: String, selected: Boolean) {
    timeSlotsList!![position].changeAvailability(text)
    timeSlotsList!![position].selecteditem(selected)
    mAdapter!!.notifyDataSetChanged()
}

private fun createTimeSlotsList() {
    timeSlotsList = ArrayList()
    timeSlotsList!!.add(TimeSlot("07:30", "Available", false))
    timeSlotsList!!.add(TimeSlot("08:00", "Available", false))
    timeSlotsList!!.add(TimeSlot("08:30", "Available", false))
    timeSlotsList!!.add(TimeSlot("09:00", "Available", false))
    timeSlotsList!!.add(TimeSlot("09:30", "Available", false))
    timeSlotsList!!.add(TimeSlot("10:00", "Available", false))
    timeSlotsList!!.add(TimeSlot("10:30", "Available", false))
    timeSlotsList!!.add(TimeSlot("11:00", "Available", false))
    timeSlotsList!!.add(TimeSlot("11:30", "Available", false))
    timeSlotsList!!.add(TimeSlot("12:00", "Available", false))
    timeSlotsList!!.add(TimeSlot("12:30", "Available", false))
    timeSlotsList!!.add(TimeSlot("13:00", "Available", false))
    timeSlotsList!!.add(TimeSlot("13:30", "Available", false))
    timeSlotsList!!.add(TimeSlot("14:00", "Available", false))
    timeSlotsList!!.add(TimeSlot("14:30", "Available", false))
    timeSlotsList!!.add(TimeSlot("15:00", "Available", false))
    timeSlotsList!!.add(TimeSlot("15:30", "Available", false))
    timeSlotsList!!.add(TimeSlot("16:00", "Available", false))
    timeSlotsList!!.add(TimeSlot("16:30", "Available", false))
    timeSlotsList!!.add(TimeSlot("17:00", "Available", false))
    timeSlotsList!!.add(TimeSlot("17:30", "Available", false))
    timeSlotsList!!.add(TimeSlot("18:00", "Available", false))
    timeSlotsList!!.add(TimeSlot("18:30", "Available", false))
    timeSlotsList!!.add(TimeSlot("19:00", "Available", false))
    timeSlotsList!!.add(TimeSlot("19:30", "Available", false))
    timeSlotsList!!.add(TimeSlot("20:00", "Available", false))
    timeSlotsList!!.add(TimeSlot("20:30", "Available", false))
    timeSlotsList!!.add(TimeSlot("21:00", "Available", false))
    timeSlotsList!!.add(TimeSlot("21:30", "Available", false))
    timeSlotsList!!.add(TimeSlot("22:00", "Available", false))

}

}

请问这个问题怎么解决？

标签： androidkotlinandroid-recyclerview

android - 添加 setTextColor 后，OnItemClickListener 在 recyclerView 中无法正常工作？

问题描述

解决方案

推荐阅读