android - Preference Menu on 10 inch tablet -

i trying figure out why layout of preference menu displayed in false way on 10' tablets when using in landscape mode. looks lines right of checkboxes left of them. can see here http://imageshack.us/photo/my-images/109/schnappschuss2013052109.png/

on 7' tablets, works expected do.

my menu looks that:

    <?xml version="1.0" encoding="utf-8"?> <preferencescreen xmlns:android="http://schemas.android.com/apk/res/android" > <preferencecategory          android:title="@string/pref_message"         android:key="pref_key_message_settings">         <checkboxpreference             android:key="pref_key_add_timestamp"             android:summary="@string/pref_summary_addtimestamp"             android:title="@string/pref_addtimestamp"             android:defaultvalue="true"/>         <listpreference             android:dependency="pref_key_add_timestamp"             android:summary="@string/pref_summary_timestamp_option"             android:key="pref_key_timestamp_option"             android:title="@string/pref_timestampoption"             android:dialogtitle="@string/pref_timestampoptiondialog"             android:entries="@array/pref_timestamparray"             android:entryvalues="@array/pref_timestampvalues"             android:defaultvalue="time" />         <checkboxpreference             android:key="pref_key_add_newline"             android:summary="@string/pref_summary_addnewline"             android:title="@string/pref_addnewline"             android:defaultvalue="true"/>         <listpreference             android:dependency="pref_key_add_newline"             android:key="pref_key_newline_option"             android:summary="@string/pref_summary_newline_option"             android:title="@string/pref_newlineoption"             android:dialogtitle="@string/pref_newlineoptiondialog"             android:entries="@array/pref_newlinearray"             android:entryvalues="@array/pref_newlinevalues"             android:defaultvalue="lf" />         <checkboxpreference             android:key="pref_key_clear_text"             android:summary="@string/pref_summary_cleartext"             android:title="@string/pref_cleartext"             android:defaultvalue="false"/>     </preferencecategory>  <preferencecategory          android:title="@string/pref_storage"         android:key="pref_key_storage_settings">         <edittextpreference             android:key="pref_key_change_name"             android:summary="@string/pref_summary_editfilename"             android:title="@string/pref_editfilename"             android:defaultvalue="history"/>         <checkboxpreference             android:key="pref_key_add_date"             android:summary="@string/pref_summary_adddate"             android:title="@string/pref_adddate"             android:defaultvalue="true"/>         <checkboxpreference             android:key="pref_key_add_time"             android:summary="@string/pref_summary_addtime"             android:title="@string/pref_addtime"             android:defaultvalue="true"/>             <at.rtcmanager.confirmpreference            android:key="pref_key_clear_history"             android:summary="@string/pref_summary_clearhistory"             android:title="@string/pref_clearhistory"/> </preferencecategory> <preferencecategory          android:title="@string/pref_time"         android:key="pref_key_time_settings">           <checkboxpreference             android:key="pref_key_autosend_time"             android:summary="@string/pref_summary_austosendtime"             android:title="@string/pref_autosendtime"             android:defaultvalue="false"/>         <listpreference             android:key="pref_key_mode_senttime"             android:title="@string/pref_mode_senttime"             android:summary="@string/pref_summary_mode_senttime"             android:dialogtitle="@string/pref_modesenttimedialog"             android:entries="@array/pref_senttimemodearray"             android:entryvalues="@array/pref_senttimevalues"             android:defaultvalue="10byte" /> </preferencecategory>  <preferencecategory          android:title="@string/pref_about"         android:key="pref_key_settings_about">           <preference android:title="@string/prefs_about_app" >             <intent android:action="aboutactivity"/>         </preference>  </preferencecategory>   </preferencescreen> 

and loded with:

@override     public void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);          // show button in action bar.         getactionbar().setdisplayhomeasupenabled(true);          // display fragment main content.         getfragmentmanager().begintransaction()                 .replace(android.r.id.content, new settingsmenufragment())                 .commit();        }      public static class settingsmenufragment extends preferencefragment {         @override         public void oncreate(bundle savedinstancestate) {             super.oncreate(savedinstancestate);              // load preferences xml resource             addpreferencesfromresource(r.xml.app_prefs);          }      } 

i had same problem. solution extend settingsactivity usual activity, not preferenceactivity. settingsfragment should extend preferencefragment of course. helped me, hope solves issue too.