From c7518c6fd2991ac82dccc7c7adb967ae20f074e2 Mon Sep 17 00:00:00 2001
From: Sylvain Berfini <sylvain.berfini@belledonne-communications.com>
Date: Mon, 8 Apr 2019 16:52:34 +0200
Subject: [PATCH] Fix concurrent modification exception

---
 .../java/org/linphone/chat/ChatRoomCreationFragment.java   | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/app/src/main/java/org/linphone/chat/ChatRoomCreationFragment.java b/app/src/main/java/org/linphone/chat/ChatRoomCreationFragment.java
index 2f9239b6c..7e1be930d 100644
--- a/app/src/main/java/org/linphone/chat/ChatRoomCreationFragment.java
+++ b/app/src/main/java/org/linphone/chat/ChatRoomCreationFragment.java
@@ -40,6 +40,7 @@ import androidx.recyclerview.widget.DividerItemDecoration;
 import androidx.recyclerview.widget.LinearLayoutManager;
 import androidx.recyclerview.widget.RecyclerView;
 import java.util.ArrayList;
+import java.util.List;
 import org.linphone.LinphoneActivity;
 import org.linphone.LinphoneManager;
 import org.linphone.R;
@@ -312,16 +313,20 @@ public class ChatRoomCreationFragment extends Fragment
             // Remove all contacts added before LIME switch was set
             // and that can stay because they don't have the capability
             mContactsSelectedLayout.removeAllViews();
+            List<ContactAddress> toToggle = new ArrayList<>();
             for (ContactAddress ca : mSearchAdapter.getContactsSelectedList()) {
                 // If the ContactAddress doesn't have a contact keep it anyway
                 if (ca.getContact() != null && !ca.hasCapability(FriendCapability.LimeX3Dh)) {
-                    mSearchAdapter.toggleContactSelection(ca);
+                    toToggle.add(ca);
                 } else {
                     if (ca.getView() != null) {
                         mContactsSelectedLayout.addView(ca.getView());
                     }
                 }
             }
+            for (ContactAddress ca : toToggle) {
+                mSearchAdapter.toggleContactSelection(ca);
+            }
             mContactsSelectedLayout.invalidate();
         }
     }