Question

我有一个申请，想法很简单，用户可以选择几个选项进行投票，并显示投票的百分比。

在Kotlin中，我有一个RecyclerView，其中包含几个按钮和一个TextView。他们做了一些计算。问题在于，当移至回收站视图中的另一个项目时，结果将继续超过最后一个项目中的相同结果。我希望每个项目都是独立的，并且不要干扰其他项目中的其他结果。我在处理商品位置时遇到问题。

package com.example.dell.vote1


import android.annotation.SuppressLint
import android.content.Context
import android.content.Intent
import android.support.v4.content.ContextCompat.startActivity
import android.support.v7.widget.RecyclerView
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.Button
import android.widget.EditText
import android.widget.ProgressBar
import android.widget.TextView
import com.example.dell.vote1.R.id.*
import com.example.dell.vote1.R.layout.main_vote
import com.example.dell.vote1.R.layout.raw_re2
import com.google.firebase.database.DatabaseReference
import com.google.firebase.database.FirebaseDatabase


class CustomAdapter(val voteList: ArrayList<VotePublic>) 
:RecyclerView.Adapter<CustomAdapter.ViewHolder> () {

var numofAllvotes : Float = 0f
var numofvoter1 : Float = 0f
var numofvoter2 : Float = 0f
var numofvoter3 : Float = 0f
var numofvoter4 : Float = 0f

@SuppressLint("ResourceAsColor")
override fun onBindViewHolder(holder: ViewHolder, p1: Int) {
    val votePublic:VotePublic = voteList[p1]
    holder.quesVote1.text = votePublic.quesVote
    holder.tv_vote1.text = votePublic.vote11
    holder.tv_vote2.text = votePublic.vote22
    holder.tv_vote3.text = votePublic.vote33
    holder.tv_vote4.text = votePublic.vote44



       fun vote1Click () {

           val percentage2 : Float
           val percentage3 : Float
           val percentage4 : Float

           val percentage1: Float
            this.numofvoter1++
            this.numofAllvotes++

            percentage1 = (this.numofvoter1 / this.numofAllvotes) * 100
            holder.percentage1.text = percentage1.toInt().toString()
            holder.textViewvotesNum.text = this.numofAllvotes.toInt().toString()

           percentage2 = (this.numofvoter2 / this.numofAllvotes) * 100
           holder.percentage2.text = percentage2.toInt().toString()

           percentage3 = (this.numofvoter3 / this.numofAllvotes) * 100
           holder.percentage3.text = percentage3.toInt().toString()

           percentage4 = (this.numofvoter4 / this.numofAllvotes) * 100
           holder.percentage4.text = percentage4.toInt().toString()

       }


    fun vote2Click () {

        val percentage1 : Float
        val percentage3 : Float
        val percentage4 : Float

        val percentage2: Float
        this.numofvoter2++
        this.numofAllvotes++

        percentage2 = (this.numofvoter2 / this.numofAllvotes) * 100
        holder.percentage2.text = percentage2.toInt().toString()
        holder.textViewvotesNum.text = this.numofAllvotes.toInt().toString()

        percentage1 = (this.numofvoter1 / this.numofAllvotes) * 100
        holder.percentage1.text = percentage1.toInt().toString()

        percentage3 = (this.numofvoter3 / this.numofAllvotes) * 100
        holder.percentage3.text = percentage3.toInt().toString()

        percentage4 = (this.numofvoter4 / this.numofAllvotes) * 100
        holder.percentage4.text = percentage4.toInt().toString()
    }

    fun vote3Click () {

        val percentage1 : Float
        val percentage2 : Float
        val percentage4 : Float

        val percentage3: Float
        this.numofvoter3++
        this.numofAllvotes++

        percentage3 = (this.numofvoter3 / this.numofAllvotes) * 100
        holder.percentage3.text = percentage3.toInt().toString()
        holder.textViewvotesNum.text = this.numofAllvotes.toInt().toString()

        percentage1 = (this.numofvoter1 / this.numofAllvotes) * 100
        holder.percentage1.text = percentage1.toInt().toString()

        percentage2 = (this.numofvoter2 / this.numofAllvotes) * 100
        holder.percentage2.text = percentage2.toInt().toString()

        percentage4 = (this.numofvoter4 / this.numofAllvotes) * 100
        holder.percentage4.text = percentage4.toInt().toString()

    }

    fun vote4Click () {

        val percentage1 : Float
        val percentage2 : Float
        val percentage3 : Float

        val percentage4: Float
        this.numofvoter4++
        this.numofAllvotes++

        percentage4 = (this.numofvoter4 / this.numofAllvotes) * 100
        holder.percentage4.text = percentage4.toInt().toString()
        holder.textViewvotesNum.text = this.numofAllvotes.toInt().toString()

        percentage1 = (this.numofvoter1 / this.numofAllvotes) * 100
        holder.percentage1.text = percentage1.toInt().toString()

        percentage2 = (this.numofvoter2 / this.numofAllvotes) * 100
        holder.percentage2.text = percentage2.toInt().toString()

        percentage3 = (this.numofvoter3 / this.numofAllvotes) * 100
        holder.percentage3.text = percentage3.toInt().toString()

    }

     holder.tv_vote1.setOnClickListener {

         vote1Click()
    }

    holder.tv_vote2.setOnClickListener {

        vote2Click()
    }

    holder.tv_vote3.setOnClickListener {

        vote3Click()
    }

    holder.tv_vote4.setOnClickListener {

        vote4Click()
    }
}

override fun onCreateViewHolder(p0: ViewGroup, p1: Int): ViewHolder {

    val v = LayoutInflater.from(p0.context).inflate(R.layout.raw_re2,p0,false)
    return ViewHolder(v)
}

override fun getItemCount(): Int {
    return voteList.size
}

class ViewHolder(itemView:View):RecyclerView.ViewHolder(itemView){
    val quesVote1 = itemView.findViewById(R.id.quesVote1) as TextView
    val tv_vote1 = itemView.findViewById(R.id.tv_vote1) as TextView
    val tv_vote2 = itemView.findViewById(R.id.tv_vote2) as TextView
    val tv_vote3 = itemView.findViewById(R.id.tv_vote3) as TextView
    val tv_vote4 = itemView.findViewById(R.id.tv_vote4) as TextView
    val percentage1 = itemView.findViewById(R.id.percentage1) as TextView
    val percentage2 = itemView.findViewById(R.id.percentage2) as TextView
    val percentage3 = itemView.findViewById(R.id.percentage3) as TextView
    val percentage4 = itemView.findViewById(R.id.percentage4) as TextView
    val textViewvotesNum = itemView.findViewById(R.id.textViewvotesNum) as TextView

}
}

在Kotlin，处理RecyclerView的商品位置

0 个答案: