Center apps Preference title when there is no summary

Hide apps Preference summary when a summary is empty
then its title will be vertically centered.

Bug: 229646669
Test: manual visual
      Settings -> Apps -> See all apps
      Settings -> Notifications -> App settings
      Settings -> Storage -> Apps
      Settings -> System -> Language & input -> App Languages
Change-Id: I6fceba243e2ccac9ea180b940b571da07e1ba805
Merged-In: I6fceba243e2ccac9ea180b940b571da07e1ba805

src/com/android/settings/applications/manageapplications/ApplicationViewHolder.java

@@ -95,10 +95,17 @@ public class ApplicationViewHolder extends RecyclerView.ViewHolder {
 
     void setSummary(CharSequence summary) {
         mSummary.setText(summary);
+        updateSummaryVisibility();
     }
 
     void setSummary(@StringRes int summary) {
         mSummary.setText(summary);
+        updateSummaryVisibility();
+    }
+
+    private void updateSummaryVisibility() {
+        // Hide an empty summary and then title will be vertically centered.
+        mSummary.setVisibility(TextUtils.isEmpty(mSummary.getText()) ? View.GONE : View.VISIBLE);
     }
 
     void setEnabled(boolean isEnabled) {