use proper placeholder avatars at private contacts too

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

@@ -95,14 +95,22 @@ class ThreadActivity : SimpleActivity() {
                 messages.first().participants
             }
 
+            val senderNumbersToReplace = HashMap<String, String>()
             // check if no participant came from a privately stored contact in Simple Contacts
             val privateContacts = MyContactsContentProvider.getSimpleContacts(this, privateCursor)
             participants.filter { it.name == it.phoneNumber }.forEach { participant ->
                 privateContacts.firstOrNull { it.phoneNumber == participant.phoneNumber }?.apply {
+                    senderNumbersToReplace[participant.phoneNumber] = name
                     participant.name = name
                 }
             }
 
+            messages.forEach { message ->
+                if (senderNumbersToReplace.keys.contains(message.senderName)) {
+                    message.senderName = senderNumbersToReplace[message.senderName]!!
+                }
+            }
+
             if (participants.isEmpty()) {
                 val name = intent.getStringExtra(THREAD_TITLE) ?: ""
                 val number = intent.getStringExtra(THREAD_NUMBER)

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

@@ -44,6 +44,7 @@ class ThreadAdapter(activity: SimpleActivity, var messages: ArrayList<ThreadItem
                     itemClick: (Any) -> Unit) : MyRecyclerViewAdapter(activity, recyclerView, fastScroller, itemClick) {
 
     private val roundedCornersRadius = resources.getDimension(R.dimen.normal_margin).toInt()
+
     @SuppressLint("MissingPermission")
     private val hasMultipleSIMCards = SubscriptionManager.from(activity).activeSubscriptionInfoList?.size ?: 0 > 1
 

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

@@ -5,6 +5,6 @@ import com.simplemobiletools.commons.models.SimpleContact
 
 data class Message(
     val id: Int, val body: String, val type: Int, val participants: ArrayList<SimpleContact>, val date: Int, val read: Boolean, val thread: Int,
-    val isMMS: Boolean, val attachment: MessageAttachment?, val senderName: String, val senderPhotoUri: String, val subscriptionId: Int) : ThreadItem() {
+    val isMMS: Boolean, val attachment: MessageAttachment?, var senderName: String, val senderPhotoUri: String, val subscriptionId: Int) : ThreadItem() {
     fun isReceivedMessage() = type == Telephony.Sms.MESSAGE_TYPE_INBOX
 }