Koltin37.Takeout首页详情界面左右两侧数据的绑定(22)

GoodsFragmentPresenter.kt左右的数据的交互绑定

package com.example.takeout.presenter

import android.util.Log
import com.example.takeout.model.beans.GoodsInfo
import com.example.takeout.model.beans.GoodsTypeInfo
import com.example.takeout.ui.fragment.GoodsFragment
import com.google.gson.Gson
import com.google.gson.reflect.TypeToken
import org.json.JSONObject

class GoodsFragmentPresenter(val goodsFragment: GoodsFragment) : NetPresenter() {

    var goodstypeList: List<GoodsTypeInfo> = arrayListOf()
    val allTypeGoodsList: ArrayList<GoodsInfo> = arrayListOf()

    //连接服务器拿到此商家所有商品
    fun getBusinessInfo() {
        val businessCall = takeoutService.getBusinessInfo()
        businessCall.enqueue(callback)
    }


    override fun parserJson(json: String) {
        val gson = Gson()
        val jsoObj = JSONObject(json)
        val allStr = jsoObj.getString("list")
        //商品类型的集合
        goodstypeList = gson.fromJson(allStr, object : TypeToken<List<GoodsTypeInfo>>() {
        }.type)
        Log.e("business", "该商家一共有" + goodstypeList.size + "个类别商品")
        for (i in 0 until goodstypeList.size) {
            val goodsTypeInfo = goodstypeList.get(i)
            var aTypeCount = 0
            val aTypeList: List<GoodsInfo> = goodsTypeInfo.list
            for (j in 0 until aTypeList.size) {
                val goodsInfo = aTypeList.get(j)
                //建立双向绑定关系
                goodsInfo.typeName = goodsTypeInfo.name
                goodsInfo.typeId = goodsTypeInfo.id
            }
            allTypeGoodsList.addAll(goodsTypeInfo.list)
        }
        goodsFragment.onLoadBusinessSuccess(goodstypeList, allTypeGoodsList)
    }
}

GoodsAdapter.kt界面的填充getHeaderView和getHeaderId进行联系

package com.example.takeout.ui.adapter

import android.graphics.Color
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.BaseAdapter
import android.widget.ImageButton
import android.widget.ImageView
import android.widget.TextView
import androidx.fragment.app.FragmentActivity
import com.example.takeout.R
import com.example.takeout.model.beans.GoodsInfo
import com.example.takeout.ui.fragment.GoodsFragment
import org.jetbrains.anko.find
import se.emilsjolander.stickylistheaders.StickyListHeadersAdapter

class GoodsAdapter(val context: FragmentActivity?, val goodsFragment: GoodsFragment) : BaseAdapter(), StickyListHeadersAdapter {

    var goodsList: List<GoodsInfo> = ArrayList()

    fun setDatas(goodsInfoList: List<GoodsInfo>) {
        this.goodsList = goodsInfoList
        notifyDataSetChanged()
    }

    inner class GoodsItemHolder(itemView: View) : View.OnClickListener {

        override fun onClick(v: View?) {
            TODO("Not yet implemented")
        }

        val ivIcon: ImageView
        val tvName: TextView
        val tvForm: TextView
        val tvMonthSale: TextView
        val tvNewPrice: TextView
        val tvOldPrice: TextView
        val btnAdd: ImageButton
        val btnMinus: ImageButton
        val tvCount: TextView

        init {
            ivIcon = itemView.find(R.id.iv_icon)
            tvName = itemView.find(R.id.tv_name)
            tvForm = itemView.find(R.id.tv_form)
            tvMonthSale = itemView.find(R.id.tv_month_sale)
            tvNewPrice = itemView.find(R.id.tv_newprice)
            tvOldPrice = itemView.find(R.id.tv_oldprice)
            tvCount = itemView.find(R.id.tv_count)
            btnAdd = itemView.find(R.id.ib_add)
            btnMinus = itemView.find(R.id.ib_minus)
            btnAdd.setOnClickListener(this)
            btnMinus.setOnClickListener(this)
        }

        fun bindData(goodsInfo: GoodsInfo) {
            tvName.text = goodsInfo.name
        }
    }

    override fun getCount(): Int {
        return goodsList.size
    }

    override fun getItem(position: Int): Any {
        return goodsList.get(position)
    }

    override fun getItemId(position: Int): Long {
        return position.toLong()
    }

    override fun getView(position: Int, convertView: View?, parent: ViewGroup?): View {
        var itemView: View
        val goodsItemHolder: GoodsItemHolder
        if (convertView == null) {
            itemView = LayoutInflater.from(context).inflate(R.layout.item_goods, parent, false)
            goodsItemHolder = GoodsItemHolder(itemView)
            itemView.tag = goodsItemHolder
        } else {
            itemView = convertView
            goodsItemHolder = convertView.tag as GoodsItemHolder
        }
        goodsItemHolder.bindData(goodsList.get(position))
        return itemView
    }

    override fun getHeaderView(position: Int, convertView: View?, parent: ViewGroup?): View {
        val goodsInfo: GoodsInfo = goodsList.get(position)
        val typeName = goodsInfo.typeName
        val textView: TextView = LayoutInflater.from(context).inflate(R.layout.item_type_header, parent, false) as TextView
        textView.text = typeName
        textView.setTextColor(Color.BLACK)
        return textView
    }

    override fun getHeaderId(position: Int): Long {
        val goodsInfo: GoodsInfo = goodsList.get(position)
        return goodsInfo.typeId.toLong()
    }
}

效果如下：