如何使Recyclerview项目可点击

Question

我正在尝试制作一个笔记应用程序，它将允许用户制作简单的笔记并保存。我使用领域数据库来保存用户的笔记。这些纸币在回收窗口中显示得很好，但我无法点击它们。

我想做的是，当点击回收窗口中的一个笔记时，我想开始一个新的活动。

适配器

class NotesAdapter(private val context:Context, private val notesList: RealmResults<Notes>):RecyclerView.Adapter<RecyclerView.ViewHolder>(){
private lateinit var mOnClickListener:View.OnClickListener
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder {
val v = LayoutInflater.from(parent.context).inflate(R.layout.notes_rv_layout,parent,false)
v.setOnClickListener(mOnClickListener)
return ViewHolder(v)
}
override fun getItemCount(): Int {
return notesList.size
}
override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) {
holder.itemView.titleTV.text = notesList[position]!!.title
holder.itemView.descTV.text = notesList[position]!!.description
holder.itemView.idTV.text = notesList[position]!!.id.toString()
}
private fun onClick(view:View) {

}
class ViewHolder(v: View?):RecyclerView.ViewHolder(v!!){
val title = itemView.findViewById<TextView>(R.id.titleTV)
val desc = itemView.findViewById<TextView>(R.id.descTV)
val id = itemView.findViewById<TextView>(R.id.idTV)
}
}

主要活性

override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
//init views
realm  = Realm.getDefaultInstance()
addNotes = findViewById(R.id.addNotes)
notesRV = findViewById(R.id.NotesRV)
//onclick add notes button
addNotes.setOnClickListener {
val intent = Intent(this, AddNotesActivity::class.java)
startActivity(intent)
finish()
}
notesRV.layoutManager = StaggeredGridLayoutManager(2,LinearLayoutManager.VERTICAL)
getAllNotes()
}
private fun getAllNotes() {
notesList = ArrayList()
val results:RealmResults<Notes> = realm.where<Notes>(Notes::class.java).findAll()
notesRV.adapter = NotesAdapter(this, results)
notesRV.adapter!!.notifyDataSetChanged()
}
}

Answer 1

使用onBindViewHolder：

override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) {
holder.itemView.titleTV.text = notesList[position]!!.title
holder.itemView.descTV.text = notesList[position]!!.description
holder.itemView.idTV.text = notesList[position]!!.id.toString()
holder.itemView.setOnClickListener{
val intent = Intent(holder.itemView.context,YourActivity::class.java)
holder.itemView.context.startActivity(intent)
}
}