IMS-VT: CallUpdateListeners not removed from list

- CallUpdateListener list continually grows
when Voice Telephony upgrades are rejected
- UI slows down when upgrades are continually
rejected
- Allow a call id change only when VT upgrades
are not pending

Change-Id: I932f920c018c121c9f2550d22df15c4e886f46d9
CRs-fixed: 816622

1 files changed, 3 insertions, 1 deletions

diff --git a/src/com/android/incallui/AnswerPresenter.java b/src/com/android/incallui/AnswerPresenter.java
index 354bf1a7..d69f5f49 100755
--- a/src/com/android/incallui/AnswerPresenter.java
+++ b/src/com/android/incallui/AnswerPresenter.java
@@ -240,7 +240,9 @@ public class AnswerPresenter extends Presenter<AnswerPresenter.AnswerUi>
             }
             // mCallId will hold the state of the call. We don't clear the mCall variable here as
             // it may be useful for sending text messages after phone disconnects.
-            mCallId[phoneId] = null;
+            if (!isUpgradePending) {
+                mCallId[phoneId] = null;
+            }
             mHasTextMessages = false;
         } else if (!mHasTextMessages) {
             final List<String> textMsgs = CallList.getInstance().getTextResponses(call.getId());