SOC on the NoteRecyclerAdapter

Author: appleobject

app/src/main/java/com/appleobject/notekeeper/NoteListActivity.kt

@@ -11,6 +11,7 @@ import kotlinx.android.synthetic.main.content_note_list.*
 
 class NoteListActivity : AppCompatActivity() {
 
+    lateinit var noteRecyclerAdapter: NoteRecyclerAdapter
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -22,11 +23,17 @@ class NoteListActivity : AppCompatActivity() {
             startActivity(activityIntent)
         }
 
-        listItems.layoutManager = LinearLayoutManager(this)
 
-        listItems.adapter = NoteRecyclerAdapter(this, DataManager.notes)
+        initRecyclerView()
+    }
 
 
+    private fun initRecyclerView(){
+        listItems.apply {
+            layoutManager = LinearLayoutManager(this@NoteListActivity)
+            noteRecyclerAdapter = NoteRecyclerAdapter(this.context, DataManager.notes)
+            adapter = noteRecyclerAdapter
+        }
     }
 
     override fun onResume() {

app/src/main/java/com/appleobject/notekeeper/NoteRecyclerAdapter.kt

@@ -2,45 +2,56 @@ package com.appleobject.notekeeper
 
 import android.content.Context
 import android.content.Intent
+import android.provider.ContactsContract
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import android.widget.TextView
 import androidx.recyclerview.widget.RecyclerView
 import com.appleobject.notekeeper.model.NoteInfo
 
-class NoteRecyclerAdapter(private val context: Context, val notes : List<NoteInfo>)
-    : RecyclerView.Adapter<NoteRecyclerAdapter.ViewHolder>() {
+class NoteRecyclerAdapter(private val context: Context, private var notes : List<NoteInfo>)
+    : RecyclerView.Adapter<RecyclerView.ViewHolder>() {
 
-    private val layoutInflater = LayoutInflater.from(context)
 
-     inner class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView){
-        val textCourse = itemView.findViewById<TextView>(R.id.textCourse)
-        val textTitle = itemView.findViewById<TextView>(R.id.textTitle)
+      class NoteViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView){
+        private val textCourse: TextView = itemView.findViewById<TextView>(R.id.textCourse)
+        private val textTitle: TextView = itemView.findViewById<TextView>(R.id.textTitle)
          var notePosition = 0
 
         init{
             itemView.setOnClickListener {
-                val intent = Intent(context, NoteActivity::class.java)
+                val intent = Intent(it.context, NoteActivity::class.java)
                 intent.putExtra(NOTE_POSITION, notePosition)
-                context.startActivity(intent)
+                it.context.startActivity(intent)
             }
 
         }
 
+          // Bind the view to the collection
+         fun bind(noteInfo: NoteInfo){
+             textCourse.text = noteInfo.course?.title
+             textTitle.text = noteInfo.title
+         }
+
     }
 
-    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
-        val itemView = layoutInflater.inflate(R.layout.item_note_list, parent, false)
-        return ViewHolder(itemView)
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder {
+        return NoteViewHolder(
+            LayoutInflater.from(parent.context).inflate(R.layout.item_note_list, parent, false)
+        )
     }
 
     override fun getItemCount() = notes.size
 
-    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
-        val note = notes[position]
-        holder.textCourse.text = note.course?.title
-        holder.textTitle.text = note.title
-        holder.notePosition = position
+
+    // We can have more than one ViewHolder
+    override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) {
+        when(holder){
+            is NoteViewHolder -> {
+                holder.bind(notes[position])
+                holder.notePosition = position
+            }
+        }
     }
 }