Question

我有一个包含2个元素的回收器视图。我想添加2个按钮以执行不同的操作（取决于回收器视图的哪个元素。如何做到这一点？我的元素是textviews

SettingsActiv.kt

class SettingsActiv : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_settings)

        val arrow_backBtn = findViewById(R.id.settingsToolbarBtn) as Button
        arrow_backBtn.setOnClickListener{
            startActivity(Intent(this, MainActivity::class.java))
        }

        val linearLayout  = findViewById(R.id.constr) as LinearLayout
        val recyclerView =  RecyclerView(this)
        val series = ArrayList<SeriesModel>()
        recyclerView.layoutParams = LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT)
        series.add(SeriesModel("Unit of length","Meter"))
        series.add(SeriesModel("Unit of temperature","Celcius"))
        val adapter = MyAdapter(series)
        recyclerView.setHasFixedSize(true)
        recyclerView.layoutManager = LinearLayoutManager(this, LinearLayout.VERTICAL, false)
        recyclerView.adapter = adapter
        linearLayout.addView(recyclerView,1)
}

MyAdapter.kt

class MyAdapter(private val seriesList: ArrayList<SeriesModel>) : RecyclerView.Adapter<MyAdapter.MyViewHolder>() {


    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): MyAdapter.MyViewHolder {
        val v = LayoutInflater.from(parent.context).inflate(R.layout.activity_settings_child, parent, false)
        return MyViewHolder(v)
    }

    override fun onBindViewHolder(holder: MyViewHolder, position: Int) {
        holder.textViewName.text = seriesList[position].name
        holder.textViewNameDesc.text = seriesList[position].desc

    }

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

    class MyViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
        val textViewName = itemView.findViewById(R.id.name) as TextView
        val textViewNameDesc = itemView.findViewById(R.id.desc) as TextView

    }
}

Answer 1

尝试一下

 override fun onBindViewHolder(holder: MyViewHolder, position: Int) {
        holder.textViewName.text = seriesList[position].name
        holder.textViewNameDesc.text = seriesList[position].desc

        holder.textViewName.setOnClickListener {
            Toast.makeText(context,"clicked",Toast.LENGTH_SHORT).show()
        }


    }

如何将点击侦听器添加到我的回收站视图（Android Kotlin）

1 个答案: