Fixing manage conference accessibility issues.

1. The "Manage Conference" button would be announced twice when it received
focus.  Moved content description to the parent FrameLayout that acts as
the button and made it focusable to ensure that the description is read
only a single time.
2. When tapping "Manage Conference" button there was no audible feedback
that the manage conference screen was opened.  Set focus to the list of
conference participants so that this list is announced when the manage
conference screen opens.
3. It was possible to change focus from the list of participants in the
manage conference screen to the call card buttons and other elements
behind the manage conference screen.  Fixed by explicitly setting the
call card fragment visibility to GONE when the conference manager is shown.

Bug: 18440532
Change-Id: I0ce4f74ccb98c5cefd6c6e75eb8ef9310bd6d7fb

4 files changed, 20 insertions, 8 deletions

diff --git a/InCallUI/res/layout/conference_manager_fragment.xml b/InCallUI/res/layout/conference_manager_fragment.xml
index 5aed520b7..8e55ad762 100644
--- a/InCallUI/res/layout/conference_manager_fragment.xml
+++ b/InCallUI/res/layout/conference_manager_fragment.xml
@@ -23,7 +23,6 @@
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:paddingTop="@dimen/conference_call_manager_padding_top"
-    android:clickable="true"
     android:visibility="gone">
 
     <!-- List of conference participants. -->
@@ -33,5 +32,7 @@
         android:layout_height="match_parent"
         android:listSelector="@null"
         android:background="@color/background_dialer_white"
-        android:divider="@null" />
+        android:divider="@null"
+        android:focusableInTouchMode="true"
+        android:focusable="true"/>
 </FrameLayout>
diff --git a/InCallUI/res/layout/manage_conference_call_button.xml b/InCallUI/res/layout/manage_conference_call_button.xml
index e9de926fd..3b5ef9931 100644
--- a/InCallUI/res/layout/manage_conference_call_button.xml
+++ b/InCallUI/res/layout/manage_conference_call_button.xml
@@ -15,12 +15,14 @@
   ~ limitations under the License
   -->
 
-<!-- This button is used only on GSM devices, during a conference call. -->
+<!-- This button is used only on GSM and IMS devices, during a conference call. -->
 <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:id="@+id/manage_conference_call_button"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
-    android:background="@color/incall_banner_secondary_background_color">
+    android:background="@color/incall_banner_secondary_background_color"
+    android:focusable="true"
+    android:contentDescription="@string/onscreenManageConferenceText">
 
     <Space android:layout_width="match_parent"
         android:layout_height="1dp"
@@ -42,8 +44,8 @@
             android:layout_height="wrap_content"
             android:src="@drawable/ic_group_white_24dp"
             android:tint="@color/incall_banner_secondary_text_color"
-            android:contentDescription="@string/onscreenManageConferenceText"
-            android:paddingEnd="16dp" />
+            android:paddingEnd="16dp"
+            android:importantForAccessibility="no" />
 
         <TextView android:id="@+id/manageConferenceButtonLabel"
             android:layout_width="match_parent"
@@ -51,7 +53,8 @@
             android:gravity="center_vertical"
             android:textColor="@color/incall_banner_secondary_text_color"
             android:textSize="@dimen/secondary_call_info_text_size"
-            android:text="@string/onscreenManageConferenceText" />
+            android:text="@string/onscreenManageConferenceText"
+            android:importantForAccessibility="no" />
 
     </LinearLayout>
 
diff --git a/InCallUI/src/com/android/incallui/ConferenceManagerFragment.java b/InCallUI/src/com/android/incallui/ConferenceManagerFragment.java
index c25a1ab4b..163954b2d 100644
--- a/InCallUI/src/com/android/incallui/ConferenceManagerFragment.java
+++ b/InCallUI/src/com/android/incallui/ConferenceManagerFragment.java
@@ -92,6 +92,9 @@ public class ConferenceManagerFragment
             final CallList calls = CallList.getInstance();
             getPresenter().init(getActivity(), calls);
             getView().setVisibility(View.VISIBLE);
+            // Request focus on the list of participants for accessibility purposes.  This ensures
+            // that once the list of participants is shown, the first participant is announced.
+            mConferenceParticipantList.requestFocus();
         } else {
             getView().setVisibility(View.GONE);
 
diff --git a/InCallUI/src/com/android/incallui/InCallActivity.java b/InCallUI/src/com/android/incallui/InCallActivity.java
index 3f9cd9827..00bcad824 100644
--- a/InCallUI/src/com/android/incallui/InCallActivity.java
+++ b/InCallUI/src/com/android/incallui/InCallActivity.java
@@ -319,7 +319,7 @@ public class InCallActivity extends Activity {
         // BACK is also used to exit out of any "special modes" of the
         // in-call UI:
 
-        if (!mCallCardFragment.isVisible()) {
+        if (!mConferenceManagerFragment.isVisible() && !mCallCardFragment.isVisible()) {
             return;
         }
 
@@ -328,6 +328,7 @@ public class InCallActivity extends Activity {
             return;
         } else if (mConferenceManagerFragment.isVisible()) {
             mConferenceManagerFragment.setVisible(false);
+            mCallCardFragment.getView().setVisibility(View.VISIBLE);
             return;
         }
 
@@ -682,6 +683,10 @@ public class InCallActivity extends Activity {
 
     public void showConferenceCallManager() {
         mConferenceManagerFragment.setVisible(true);
+
+        // Need to hide the call card fragment to ensure that accessibility service does not try to
+        // give focus to the call card when the conference manager is visible.
+        mCallCardFragment.getView().setVisibility(View.GONE);
     }
 
     public void showPostCharWaitDialog(String callId, String chars) {