Talkback improvements for Settings screens.

Bug: 21164141
Change-Id: I7444261ccf967f6db70c9fe44a00bd3f19ceb975

src/com/android/settings/ConfirmDeviceCredentialBaseFragment.java

@@ -17,6 +17,7 @@
 package com.android.settings;
 
 import android.annotation.Nullable;
+import android.content.Intent;
 import android.os.Bundle;
 import android.view.View;
 import android.widget.Button;
@@ -82,6 +83,17 @@ public abstract class ConfirmDeviceCredentialBaseFragment extends InstrumentedFr
         }
     }
 
+    protected void setAccessibilityTitle(CharSequence suplementalText) {
+        Intent intent = getActivity().getIntent();
+        if (intent != null) {
+            CharSequence titleText = intent.getCharSequenceExtra(
+                    ConfirmDeviceCredentialBaseFragment.TITLE_TEXT);
+            String accessibilityTitle =
+                    new StringBuilder(titleText).append(",").append(suplementalText).toString();
+            getActivity().setTitle(Utils.createAccessibleSequence(titleText, accessibilityTitle));
+        }
+    }
+
     @Override
     public void onPause() {
         super.onPause();