<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
  
      <SwitchPreference
          android:defaultValue="true"
          android:key="key_mode"
          android:summary="@string/pref_description_mode"
          android:title="@string/pref_title_mode"/>
  
  
      <!-- NOTE: Hide buttons to simplify the UI. Users can touch outside the dialog to
           dismiss it. -->
      <!--NOTE: ListPreference's summary should be set to its value by the activity code. -->
      <ListPreference
          android:defaultValue="V3"
          android:entries="@array/pref_payment_version_titles"
          android:entryValues="@array/pref_payment_version_values"
          android:key="key_pay_version"
          android:negativeButtonText="@null"
          android:positiveButtonText="@null"
          android:title="@string/pref_title_payment_version"/>
  
  </PreferenceScreen>