Misc string updates

- Use BidiFormat wrap dp number
- Update billing cycle starting day string

Change-Id: Ifb57e3bb18ced72f91f30599a2ff7bcfa329630f
Fix: 37353209
Fix: 37657115
Fix: 38005987
Test: visual

src/com/android/settings/display/DensityPreference.java

@@ -16,6 +16,7 @@ package com.android.settings.display;
 
 import android.content.Context;
 import android.content.res.Resources;
+import android.text.BidiFormatter;
 import android.text.InputType;
 import android.util.AttributeSet;
 import android.util.DisplayMetrics;
@@ -23,10 +24,13 @@ import android.util.Slog;
 import android.view.Display;
 import android.view.View;
 import android.widget.EditText;
+
 import com.android.settings.CustomEditTextPreference;
 import com.android.settings.R;
 import com.android.settingslib.display.DisplayDensityUtils;
 
+import java.text.NumberFormat;
+
 public class DensityPreference extends CustomEditTextPreference {
     private static final String TAG = "DensityPreference";
 
@@ -37,8 +41,9 @@ public class DensityPreference extends CustomEditTextPreference {
     @Override
     public void onAttached() {
         super.onAttached();
-
-        setSummary(getContext().getString(R.string.developer_density_summary, getCurrentSwDp()));
+        final CharSequence dpValue = BidiFormatter.getInstance()
+                .unicodeWrap(NumberFormat.getInstance().format(getCurrentSwDp()));
+        setSummary(getContext().getString(R.string.density_pixel_summary,dpValue));
     }
 
     private int getCurrentSwDp() {