android - How to add the category on preference header? -

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I have a simple preference_headers.xml file. I want to add some categories to my preference titles. PreferenceCategory / & gt; I tried to implement in my preference_headers.xml , but it does not work. I am using API Level 11. Android developers can add categories as shown in the picture below. How can I add this too?

Categories at the top of the Priority

and some of my Preference_headers.xml code. This will not work: 

  & lt; Priority-header xmlns: Android = "http://schemas.android.com/apk/res/android" & gt; & Lt; PreferenceCategory Android: Title = "Account" & gt; & Lt; Header Android: Piece = "ComkexamplekpreferenceheaderkSettingsFragmentAccount" android: title = "@ string / pref_header_category_account" android: summary = "@ string / pref_header_summ_account" android: icon = "@ drawable / ic_action_settings" / & gt; & Lt; / PreferenceCategory & gt; & Lt; PreferenceCategory Android: Title = "Apps" & gt; & Lt; Header Android: Piece = "ComkexamplekpreferenceheaderkSettingsFragmentApplication" android: title = "@ string / pref_header_category_application" android: summary = "@ string / pref_header_summ_application" android: icon = "@ drawable / ic_action_group" / & gt; & Lt; / PreferenceCategory & gt; & Lt; / Preferences-header & gt;   
 Thank you for your help.   
 
 
 It has been said to have been close to one year since this but I I think that enough detail and explanation in the description describes the need to run in this example.  
 I hope this will help someone as it has helped me since this statement  
 Cheers.    The process of creating screens with categories and headers on the same page to create a preference screen!

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