title: Android - Should I keep using PreferenceActivity?
body: <p>My app supports from 2.2 to the lates Android version.
  The thing is that for Settings page, I am using PreferenceActivity now.
  However, as you know, many of its methods are deprecated and they tell me to use Fragment based settings.
  However, I found that if I switch to use PreferenceFragment and Fragment Activity, I cannot support 2.2 and 2.3 anymore because PreferenceFragment is supported above API level 11. 
  Even if I use support library, it doesn't contain PreferenceFragment!
  I don't know why Google didn't add PreferenceFragment in the support library.</p>
  
  <p>Anyways, I think I can still use the old PreferenceActivity but if it says it is deprecated, why doesn't it support an alternative in its support library?</p>
  
  <p>Any advice is appreciated!</p>