split messages between received and sent

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

@@ -8,8 +8,10 @@ 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.helpers.RECEIVED_MESSAGE
+import com.simplemobiletools.smsmessenger.helpers.SENT_MESSAGE
 import com.simplemobiletools.smsmessenger.models.Message
-import kotlinx.android.synthetic.main.item_thread_message.view.*
+import kotlinx.android.synthetic.main.item_received_message.view.*
 
 class ThreadAdapter(
     activity: SimpleActivity, var messages: ArrayList<Message>,
@@ -48,7 +50,14 @@ class ThreadAdapter(
 
     override fun onActionModeDestroyed() {}
 
-    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int) = createViewHolder(R.layout.item_thread_message, parent)
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
+        val layout = if (viewType == RECEIVED_MESSAGE) {
+            R.layout.item_received_message
+        } else {
+            R.layout.item_sent_message
+        }
+        return createViewHolder(layout, parent)
+    }
 
     override fun onBindViewHolder(holder: ViewHolder, position: Int) {
         val message = messages[position]
@@ -60,6 +69,14 @@ class ThreadAdapter(
 
     override fun getItemCount() = messages.size
 
+    override fun getItemViewType(position: Int): Int {
+        return if (messages[position].isReceivedMessage()) {
+            RECEIVED_MESSAGE
+        } else {
+            SENT_MESSAGE
+        }
+    }
+
     private fun getItemWithKey(key: Int): Message? = messages.firstOrNull { it.id == key }
 
     private fun getSelectedItems() = messages.filter { selectedKeys.contains(it.id) } as ArrayList<Message>

app/src/main/kotlin/com/simplemobiletools/smsmessenger/helpers/Constants.kt

@@ -2,3 +2,7 @@ package com.simplemobiletools.smsmessenger.helpers
 
 const val THREAD_ID = "thread_id"
 const val THREAD_NAME = "thread_name"
+
+// message types for the thread list view
+const val RECEIVED_MESSAGE = 1
+const val SENT_MESSAGE = 2

app/src/main/kotlin/com/simplemobiletools/smsmessenger/models/Message.kt

@@ -1,6 +1,10 @@
 package com.simplemobiletools.smsmessenger.models
 
+import android.provider.Telephony
+
 data class Message(
     val id: Int, val subject: String, val body: String, val type: Int, val address: String, val date: Int, val read: Boolean,
     val thread: Int
-)
+) {
+    fun isReceivedMessage() = type == Telephony.Sms.MESSAGE_TYPE_INBOX
+}