getActionBar() returns null in PreferenceActivity (AppCompat-v7 21)

Question

I have implemented DoneBar (two buttons in actionbar) in PreferenceActivity as provided in v20 sdk samples, but after updating SDK and AppCompat to version 21 m

Answer 1

I managed to fix this issue by specifying custom theme for my settings activity,

and : android:theme="@style/SettingsTheme" in manifest for activity

actionbar is again showing on KITKAT and LOLIPOP and (have not tested it) back to api v11. I tested it and it works (with no actionbar as expected) on api 10.

From debugging on lolipop, FEATURE_NO_TITLE was being set in PhoneWindow.java:3243 :

   if (a.getBoolean(R.styleable.Window_windowNoTitle, false)) {
        requestFeature(FEATURE_NO_TITLE);

which removes FEATURE_ACTION_BAR

[edit]

but this action bar is not from material theme, so still its not perfect

[edit2]

I gave up with Headers, now I am using PreferenceFragment backport from github. Now all my actionbars are the same after upgrade to appcompact 21.