Fix NPE issue when tapping speaker button on VT call ended screen

Null pointer exception occurred when tapping speaker button on
VT call ended screen. At the ending of VT call, the call is NULL and
issue caused by accessing the call.

To resolve this issue, disable speaker button on VT call ended screen
by updating button UI when button controller is disabled.

Bug: 109765937
Test: manual - Check that speaker button is disabled on the
VT call ended screen.

This is an upstream change:
https://android-review.googlesource.com/c/platform/packages/apps/Dialer/+/699606/

Bug: 109765937
Test: manual
PiperOrigin-RevId: 200096438
Change-Id: Ibecda05fe93edd0a5bbd3bcc29107fc51d3ae2cc

1 files changed, 3 insertions, 2 deletions

diff --git a/java/com/android/incallui/video/impl/SpeakerButtonController.java b/java/com/android/incallui/video/impl/SpeakerButtonController.java
index e17cf7b9f..4ae746b3c 100644
--- a/java/com/android/incallui/video/impl/SpeakerButtonController.java
+++ b/java/com/android/incallui/video/impl/SpeakerButtonController.java
@@ -43,7 +43,7 @@ public class SpeakerButtonController implements OnCheckedChangeListener, OnClick
   private boolean isEnabled;
   private CharSequence contentDescription;
 
-  public SpeakerButtonController(
+  SpeakerButtonController(
       @NonNull CheckableImageButton button,
       @NonNull InCallButtonUiDelegate inCallButtonUiDelegate,
       @NonNull VideoCallScreenDelegate videoCallScreenDelegate) {
@@ -54,9 +54,10 @@ public class SpeakerButtonController implements OnCheckedChangeListener, OnClick
 
   public void setEnabled(boolean isEnabled) {
     this.isEnabled = isEnabled;
+    updateButtonState();
   }
 
-  public void updateButtonState() {
+  void updateButtonState() {
     button.setVisibility(View.VISIBLE);
     button.setEnabled(isEnabled);
     button.setChecked(isChecked);