adding an initial implementation of the messages adapter

app/src/main/kotlin/com/simplemobiletools/smsmessenger/activities/MainActivity.kt

@@ -11,7 +11,9 @@ import com.simplemobiletools.commons.helpers.PERMISSION_READ_SMS
 import com.simplemobiletools.commons.models.FAQItem
 import com.simplemobiletools.smsmessenger.BuildConfig
 import com.simplemobiletools.smsmessenger.R
+import com.simplemobiletools.smsmessenger.adapters.SMSsAdapter
 import com.simplemobiletools.smsmessenger.models.SMS
+import kotlinx.android.synthetic.main.activity_main.*
 
 class MainActivity : SimpleActivity() {
 
@@ -48,7 +50,12 @@ class MainActivity : SimpleActivity() {
     }
 
     private fun initMessenger() {
-        val sms = getSMSs()
+        val smss = getSMSs()
+        SMSsAdapter(this, smss, smss_list, smsss_fastscroller) {
+
+        }.apply {
+            smss_list.adapter = this
+        }
     }
 
     private fun getSMSs(): ArrayList<SMS> {

app/src/main/kotlin/com/simplemobiletools/smsmessenger/adapters/SMSsAdapter.kt

@@ -0,0 +1,62 @@
+package com.simplemobiletools.smsmessenger.adapters
+
+import android.view.Menu
+import android.view.View
+import android.view.ViewGroup
+import com.simplemobiletools.commons.adapters.MyRecyclerViewAdapter
+import com.simplemobiletools.commons.views.FastScroller
+import com.simplemobiletools.commons.views.MyRecyclerView
+import com.simplemobiletools.smsmessenger.R
+import com.simplemobiletools.smsmessenger.activities.SimpleActivity
+import com.simplemobiletools.smsmessenger.models.SMS
+import kotlinx.android.synthetic.main.item_sms.view.*
+
+class SMSsAdapter(
+    activity: SimpleActivity, var SMSs: ArrayList<SMS>, recyclerView: MyRecyclerView, fastScroller: FastScroller, itemClick: (Any) -> Unit
+) : MyRecyclerViewAdapter(activity, recyclerView, fastScroller, itemClick) {
+
+    init {
+        setupDragListener(true)
+    }
+
+    override fun getActionMenuId() = R.menu.cab_smss
+
+    override fun prepareActionMode(menu: Menu) {}
+
+    override fun actionItemPressed(id: Int) {}
+
+    override fun getSelectableItemCount() = SMSs.size
+
+    override fun getIsItemSelectable(position: Int) = true
+
+    override fun getItemSelectionKey(position: Int) = SMSs.getOrNull(position)?.id
+
+    override fun getItemKeyPosition(key: Int) = SMSs.indexOfFirst { it.id == key }
+
+    override fun onActionModeCreated() {}
+
+    override fun onActionModeDestroyed() {}
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int) = createViewHolder(R.layout.item_sms, parent)
+
+    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
+        val sms = SMSs[position]
+        holder.bindView(sms, true, true) { itemView, layoutPosition ->
+            setupView(itemView, sms)
+        }
+        bindViewHolder(holder)
+    }
+
+    override fun getItemCount() = SMSs.size
+
+    private fun getItemWithKey(key: Int): SMS? = SMSs.firstOrNull { it.id == key }
+
+    private fun getSelectedItems() = SMSs.filter { selectedKeys.contains(it.id) } as ArrayList<SMS>
+
+    private fun setupView(view: View, sms: SMS) {
+        view.apply {
+            view.sms_address.text = sms.address
+            view.sms_message_short.text = sms.body
+        }
+    }
+}