requestFeature() must be called before adding content in Fragment

android fragment android-actionbar-compat
Sunny picture Sunny · Sep 26, 2014 · Viewed 11.1k times · Source 
android.util.AndroidRuntimeException: requestFeature() must be called before adding content

I get this error when i use

getActivity().getWindow().requestFeature(Window.FEATURE_ACTION_BAR_OVERLAY);

from fragment. I want to change actionbar style only in this fragment. So I can't set this in MainActivity. How to solve this?

I saw this question requestFeature() must be called before adding content it does not say how to solve this issue from a fragment

Answer

Barry Holroyd picture Barry Holroyd · Dec 6, 2015

I also got this error, working with a DialogFragment, even though I wasn't calling requestFeature() at all.

I was calling getDecorView() from the DialogFragment's onActivitiyCreate() as part of some tracing code I had written to help me understand how and when Windows are created. That worked fine, but a bit later in the fragment's life cycle its onStart() method was called. That called Dialog's show() which eventually called AlertDialog's onCreate() which eventually called PhoneWindow's requestFeature() method to request Window.FEATURE_NO_TITLE.

Since calling getDecorView() "for the first time 'locks in' various window characteristics as described in setContentView(View, android.view.ViewGroup.LayoutParams).", this violated the requirement that "requestFeature() gets called before adding content in Fragment" -- the subtlety being that the content was getting added indirectly by my call to getDecorView().

The fix was to call peekDecorView() instead of getDecorView().

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