Fix full screen issue when switching between RTT and voice call.

Incall and answer screen is using transparent status and navigation bar, while RTT screen is using customized color. Switch between them require correct setting of system UI.

Bug: 67596257
Test: manually test to make RTT call and voice call, then switch between them.
PiperOrigin-RevId: 188956868
Change-Id: I3c17ff453be943f0b2ad28fe5cae434453fbe326

3 files changed, 11 insertions, 5 deletions

diff --git a/java/com/android/incallui/incall/impl/res/layout/frag_incall_voice.xml b/java/com/android/incallui/incall/impl/res/layout/frag_incall_voice.xml
index ccec8a4a4..2c6ee0d15 100644
--- a/java/com/android/incallui/incall/impl/res/layout/frag_incall_voice.xml
+++ b/java/com/android/incallui/incall/impl/res/layout/frag_incall_voice.xml
@@ -22,9 +22,6 @@
     android:layout_height="match_parent">
 
   <RelativeLayout
-      xmlns:android="http://schemas.android.com/apk/res/android"
-      xmlns:app="http://schemas.android.com/apk/res-auto"
-      xmlns:tools="http://schemas.android.com/tools"
       android:layout_width="match_parent"
       android:layout_height="match_parent"
       android:clipChildren="false"
diff --git a/java/com/android/incallui/rtt/impl/RttChatFragment.java b/java/com/android/incallui/rtt/impl/RttChatFragment.java
index e35ff4d73..3b943c431 100644
--- a/java/com/android/incallui/rtt/impl/RttChatFragment.java
+++ b/java/com/android/incallui/rtt/impl/RttChatFragment.java
@@ -152,6 +152,11 @@ public class RttChatFragment extends Fragment
   public View onCreateView(
       LayoutInflater inflater, @Nullable ViewGroup container, Bundle savedInstanceState) {
     View view = inflater.inflate(R.layout.frag_rtt_chat, container, false);
+    view.setSystemUiVisibility(
+        View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
+            | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
+            | View.SYSTEM_UI_FLAG_LAYOUT_STABLE
+            | View.SYSTEM_UI_FLAG_LIGHT_NAVIGATION_BAR);
     editText = view.findViewById(R.id.rtt_chat_input);
     editText.setOnEditorActionListener(this);
     editText.addTextChangedListener(this);
@@ -278,11 +283,14 @@ public class RttChatFragment extends Fragment
     Window window = getActivity().getWindow();
     window.setStatusBarColor(activity.getColor(R.color.rtt_status_bar_color));
     window.setNavigationBarColor(activity.getColor(R.color.rtt_navigation_bar_color));
-    window.getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LIGHT_NAVIGATION_BAR);
   }
 
   @Override
   public void onRttScreenStop() {
+    Activity activity = getActivity();
+    Window window = getActivity().getWindow();
+    window.setStatusBarColor(activity.getColor(android.R.color.transparent));
+    window.setNavigationBarColor(activity.getColor(android.R.color.transparent));
     rttCallScreenDelegate.onRttCallScreenUiUnready();
   }
 
diff --git a/java/com/android/incallui/rtt/impl/res/layout/frag_rtt_chat.xml b/java/com/android/incallui/rtt/impl/res/layout/frag_rtt_chat.xml
index 3194b75bc..6940569a3 100644
--- a/java/com/android/incallui/rtt/impl/res/layout/frag_rtt_chat.xml
+++ b/java/com/android/incallui/rtt/impl/res/layout/frag_rtt_chat.xml
@@ -16,7 +16,8 @@
   -->
 <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
-    android:layout_height="match_parent">
+    android:layout_height="match_parent"
+    android:fitsSystemWindows="true">
 
   <include layout="@layout/rtt_banner"/>