allow copying conversation numbers to clipboard

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

@@ -39,6 +39,7 @@ class ConversationsAdapter(activity: SimpleActivity, var conversations: ArrayLis
         menu.apply {
             findItem(R.id.cab_add_number_to_contact).isVisible = isOneItemSelected() && getSelectedItems().firstOrNull()?.isGroupConversation == false
             findItem(R.id.cab_block_number).isVisible = isNougatPlus()
+            findItem(R.id.cab_copy_number).isVisible = isOneItemSelected() && getSelectedItems().firstOrNull()?.isGroupConversation == false
         }
     }
 
@@ -50,6 +51,7 @@ class ConversationsAdapter(activity: SimpleActivity, var conversations: ArrayLis
         when (id) {
             R.id.cab_add_number_to_contact -> addNumberToContact()
             R.id.cab_block_number -> askConfirmBlock()
+            R.id.cab_copy_number -> copyNumberToClipboard()
             R.id.cab_select_all -> selectAll()
             R.id.cab_delete -> askConfirmDelete()
         }
@@ -110,6 +112,12 @@ class ConversationsAdapter(activity: SimpleActivity, var conversations: ArrayLis
         }
     }
 
+    private fun copyNumberToClipboard() {
+        val conversation = getSelectedItems().firstOrNull() ?: return
+        activity.copyToClipboard(conversation.phoneNumber)
+        finishActMode()
+    }
+
     private fun askConfirmDelete() {
         val itemsCnt = selectedKeys.size
         val items = resources.getQuantityString(R.plurals.delete_conversations, itemsCnt, itemsCnt)

app/src/main/res/menu/cab_conversations.xml

@@ -11,6 +11,10 @@
         android:icon="@drawable/ic_minus_circle_vector"
         android:title="@string/block_number"
         app:showAsAction="ifRoom" />
+    <item
+        android:id="@+id/cab_copy_number"
+        android:title="@string/copy_number_to_clipboard"
+        app:showAsAction="never" />
     <item
         android:id="@+id/cab_select_all"
         android:icon="@drawable/ic_select_all_vector"