NPE in Fragment.setUserVisibleHint

[httpdispatch]

Reported on Google Play Crashes and ANRs. Don't know how to reproduce it but seems that it is because of delayed execution. (handler.post, which is used to overcome ABS problem JakeWharton/ActionBarSherlock#887). Will add some checks to the place.

java.lang.NullPointerException
at android.support.v4.app.Fragment.setUserVisibleHint(Fragment.java:801)
at com.trovebox.android.app.ui.adapter.FragmentPagerAdapter$3.run(FragmentPagerAdapter.java:144)
at android.os.Handler.handleCallback(Handler.java:615)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4867)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1007)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:774)
at dalvik.system.NativeStart.main(Native Method)