show an error at messages that havent been sent

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

@@ -1,6 +1,7 @@
 package com.simplemobiletools.smsmessenger.activities
 
 import android.os.Bundle
+import android.provider.Telephony
 import android.telephony.SmsManager
 import com.simplemobiletools.commons.extensions.applyColorFilter
 import com.simplemobiletools.commons.extensions.onTextChangeListener
@@ -13,6 +14,7 @@ import com.simplemobiletools.smsmessenger.helpers.THREAD_ID
 import com.simplemobiletools.smsmessenger.helpers.THREAD_NAME
 import com.simplemobiletools.smsmessenger.helpers.THREAD_NUMBER
 import com.simplemobiletools.smsmessenger.models.ThreadDateTime
+import com.simplemobiletools.smsmessenger.models.ThreadError
 import com.simplemobiletools.smsmessenger.models.ThreadItem
 import kotlinx.android.synthetic.main.activity_thread.*
 
@@ -67,6 +69,10 @@ class ThreadActivity : SimpleActivity() {
                 prevDateTime = it.date
             }
             items.add(it)
+
+            if (it.type == Telephony.Sms.MESSAGE_TYPE_FAILED) {
+                items.add(ThreadError(it.id))
+            }
         }
 
         return items

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

@@ -12,8 +12,10 @@ import com.simplemobiletools.smsmessenger.activities.SimpleActivity
 import com.simplemobiletools.smsmessenger.helpers.THREAD_DATE_TIME
 import com.simplemobiletools.smsmessenger.helpers.THREAD_RECEIVED_MESSAGE
 import com.simplemobiletools.smsmessenger.helpers.THREAD_SENT_MESSAGE
+import com.simplemobiletools.smsmessenger.helpers.THREAD_SENT_MESSAGE_ERROR
 import com.simplemobiletools.smsmessenger.models.Message
 import com.simplemobiletools.smsmessenger.models.ThreadDateTime
+import com.simplemobiletools.smsmessenger.models.ThreadError
 import com.simplemobiletools.smsmessenger.models.ThreadItem
 import kotlinx.android.synthetic.main.item_received_message.view.*
 import kotlinx.android.synthetic.main.item_thread_date_time.view.*
@@ -59,6 +61,7 @@ class ThreadAdapter(
         val layout = when (viewType) {
             THREAD_DATE_TIME -> R.layout.item_thread_date_time
             THREAD_RECEIVED_MESSAGE -> R.layout.item_received_message
+            THREAD_SENT_MESSAGE_ERROR -> R.layout.item_thread_error
             else -> R.layout.item_sent_message
         }
         return createViewHolder(layout, parent)
@@ -69,7 +72,7 @@ class ThreadAdapter(
         holder.bindView(item, true, item is Message) { itemView, layoutPosition ->
             if (item is ThreadDateTime) {
                 setupDateTime(itemView, item)
-            } else {
+            } else if (item !is ThreadError) {
                 setupView(itemView, item as Message)
             }
         }
@@ -83,6 +86,7 @@ class ThreadAdapter(
         return when {
             item is ThreadDateTime -> THREAD_DATE_TIME
             (messages[position] as? Message)?.isReceivedMessage() == true -> THREAD_RECEIVED_MESSAGE
+            item is ThreadError -> THREAD_SENT_MESSAGE_ERROR
             else -> THREAD_SENT_MESSAGE
         }
     }

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

@@ -8,3 +8,4 @@ const val THREAD_NUMBER = "thread_number"
 const val THREAD_DATE_TIME = 1
 const val THREAD_RECEIVED_MESSAGE = 2
 const val THREAD_SENT_MESSAGE = 3
+const val THREAD_SENT_MESSAGE_ERROR = 4

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

@@ -0,0 +1,3 @@
+package com.simplemobiletools.smsmessenger.models
+
+data class ThreadError(val messageID: Int) : ThreadItem()

app/src/main/res/layout/item_thread_error.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<TextView xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/thread_date_time"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:gravity="end"
+    android:text="@string/message_not_sent"
+    android:textColor="@color/theme_dark_red_primary_color"
+    android:textSize="@dimen/normal_text_size" />

app/src/main/res/values/strings.xml

@@ -2,4 +2,5 @@
     <string name="app_name">Simple SMS Messenger</string>
     <string name="app_launcher_name">SMS Messenger</string>
     <string name="type_a_message">Type a message…</string>
+    <string name="message_not_sent">Message has not been sent.</string>
 </resources>