Kotlin编写Android适配器Adapter

package com.example.administrator.kotlintest

import android.content.Context
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.baseAdapter
import android.widget.TextView

/**
 * Created by zhanglei on 2017/5/31.
 * ListView的适配器
 */
class MyAdapter(var mList: List<String>,var context: Context) : BaseAdapter() {

  override fun getView(position: Int,convertView: View?,parent: ViewGroup?): View {
    var holder: MyViewHolder
    //重用view
    var v: View
    if (convertView == null) {
      holder = MyViewHolder()
      v = LayoutInflater.from(context).inflate(R.layout.list_item_layout,parent,falsE)
      holder.textView = v.findViewById(R.id.list_text_item) as TextView
      //设置tag
      v.tag = holder
    } else {
      v = convertView
      //获取tag并强转
      holder = v.tag as MyViewHolder
    }

    //为TextView设置@L_674_3@
    holder.textView.text = mList[position]
    return v
  }

  override fun getItem(position: int): Any {
    return mList[position]
  }

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

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

  class MyViewHolder {

    lateinit var textView: TextView

  }
}