Kotlin学习一制作RecyclerView列表_综合

1、相对于java中Recyclerview的setLayoutManger、setAdapter 写法变更为

recy = findViewById(R.id.main2_recy) as RecyclerView?
recy?.layoutManager = LinearLayoutManager(this)list = ArrayList()
for (i :Int in 1..5){list?.add(Studio("张三","男","20"))
}
recy?.adapter = adapters(this,list)

2、获取控件方式变换为
recy = findViewById(R.id.main2_recy) as RecyclerView?
适配器处理适配器处理方面网上有三种教程，我这个是根据studio提示的方法来生成的适配器

class adapters : RecyclerView.Adapter<adapters.Holder> {private var context: Contextprivate var list: ArrayList<Studio>?constructor(context: Context, list:ArrayList<Studio>?){this.context = contextthis.list = list}override fun onCreateViewHolder(parent: ViewGroup?, viewType: Int): Holder {//TODO("not implemented") //To change body of created functions use File | Settings | File Templates.  return Holder(View.inflate(parent?.context,R.layout.item_recy,null))}override fun getItemCount(): Int {//TODO("not implemented") //To change body of created functions use File | Settings | File Templates.  return list?.size as Int}override fun onBindViewHolder(holder: Holder?, position: Int) {//TODO("not implemented") //To change body of created functions use File | Settings | File Templates.  holder?.tv?.setText(list?.get(position)?.name)holder?.tv?.setOnClickListener({

        })}class Holder(itemView: View?) : RecyclerView.ViewHolder(itemView) {var tv:TextView =   itemView?.findViewById(R.id.item_tv) as TextView}}

注意 TODO是需要处理的有点类似于java的//todo,但是不同的是，因为它的方法告诉我们，它会抛出一个异常，也就
是上面这个方法会导致程序崩溃。它的好处是：配合IDE自动声明的TODO, 会强制开发者去实现这个TODO或者删除它。

Kotlin学习一 制作RecyclerView列表

Kotlin学习一制作RecyclerView列表