<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
  
      <EditTextPreference
          android:defaultValue="100"
          android:key="key_appid"
          android:summary="@string/pref_description_appid"
          android:title="@string/pref_title_appid"/>
  
      <!-- NOTE: EditTextPreference accepts EditText attributes. -->
      <!-- NOTE: EditTextPreference's summary should be set to its value by the activity code. -->
      <EditTextPreference
          android:defaultValue="1000"
          android:key="key_channel"
          android:summary="@string/pref_description_channel"
          android:title="@string/pref_title_channel"/>
  
      <!-- 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="-1"-->
      <!--android:entries="@array/pref_example_list_titles"-->
      <!--android:entryValues="@array/pref_example_list_values"-->
      <!--android:key="example_list"-->
      <!--android:negativeButtonText="@null"-->
      <!--android:positiveButtonText="@null"-->
      <!--android:title="@string/pref_title_add_friends_to_messages"/>-->
  
  </PreferenceScreen>