prepare for handling multiple mms attachments

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

@@ -187,10 +187,11 @@ class ThreadAdapter(
                 thread_message_body.setTextColor(background.getContrastColor())
             }
 
-            if (message.attachment != null) {
-                val type = message.attachment.type
+            if (message.attachment?.attachments?.isNotEmpty() == true) {
+                val attachment = message.attachment.attachments.first()
+                val type = attachment.type
                 if (type.startsWith("image/") || type.startsWith("video/")) {
-                    val uri = message.attachment.uri
+                    val uri = attachment.uri
                     val options = RequestOptions()
                         .diskCacheStrategy(DiskCacheStrategy.NONE)
                         .transform(FitCenter(), RoundedCorners(roundedCornersRadius))

app/src/main/kotlin/com/simplemobiletools/smsmessenger/extensions/Context.kt

@@ -142,6 +142,7 @@ fun Context.getMMS(threadId: Int? = null, sortOrder: String? = null): ArrayList<
             contactsMap.put(it.id, it)
         }
     }
+
     return messages
 }
 
@@ -218,20 +219,20 @@ fun Context.getMmsAttachment(id: Int): MessageAttachment? {
     )
     val selection = "${Mms.Part.MSG_ID} = ?"
     val selectionArgs = arrayOf(id.toString())
-    val attachment = MessageAttachment(id, "", null, "")
+    val messageAttachment = MessageAttachment(id, "", arrayListOf())
 
     queryCursor(uri, projection, selection, selectionArgs, showErrors = true) { cursor ->
         val partId = cursor.getStringValue(Mms._ID)
         val type = cursor.getStringValue(Mms.Part.CONTENT_TYPE)
         if (type == "text/plain") {
-            attachment.text = cursor.getStringValue(Mms.Part.TEXT) ?: ""
+            messageAttachment.text = cursor.getStringValue(Mms.Part.TEXT) ?: ""
         } else if (type.startsWith("image/") || type.startsWith("video/")) {
-            attachment.uri = Uri.withAppendedPath(uri, partId)
-            attachment.type = type
+            val attachment = Attachment(Uri.withAppendedPath(uri, partId), type)
+            messageAttachment.attachments.add(attachment)
         }
     }
 
-    return attachment
+    return messageAttachment
 }
 
 fun Context.getLatestMMS(): Message? {

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

@@ -0,0 +1,5 @@
+package com.simplemobiletools.smsmessenger.models
+
+import android.net.Uri
+
+data class Attachment(var uri: Uri?, var type: String)

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

@@ -1,5 +1,3 @@
 package com.simplemobiletools.smsmessenger.models
 
-import android.net.Uri
-
-data class MessageAttachment(val id: Int, var text: String, var uri: Uri?, var type: String)
+data class MessageAttachment(val id: Int, var text: String, var attachments: ArrayList<Attachment>)

app/src/main/kotlin/com/simplemobiletools/smsmessenger/receivers/MmsReceiver.kt

@@ -19,7 +19,7 @@ class MmsReceiver : com.klinker.android.send_message.MmsReceivedReceiver() {
             val glideBitmap = try {
                 Glide.with(context)
                     .asBitmap()
-                    .load(mms.attachment!!.uri)
+                    .load(mms.attachment!!.attachments.first().uri)
                     .centerCrop()
                     .into(size, size)
                     .get()