Kotlin学习一制作RecyclerView列表

最新推荐文章于 2024-10-06 20:41:17 发布

小菜比哔哔哔

最新推荐文章于 2024-10-06 20:41:17 发布

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文章标签： Kotlin Recyclerview适

本文链接：https://blog.youkuaiyun.com/qq_34881609/article/details/78422669

本文介绍如何在Kotlin中使用RecyclerView，并提供了一个具体的适配器实例，展示了如何设置布局管理器、初始化数据列表及自定义适配器类。

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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: Context

    private var list: ArrayList<Studio>?

    constructor(context: Context, list:ArrayList<Studio>?){
        this.context = context
        this.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
    }

}