Searched on Google with the first line of a JAVA stack trace?

We can recommend more relevant solutions and speed up debugging when you paste your entire stack trace with the exception message. Try a sample exception.

Recommended solutions based on your search

Solutions on the web

via Stack Overflow by Kacy Raye
, 1 year ago
Attempt to invoke virtual method 'void android.support.v4.app.FragmentManagerImpl.performPendingDeferredStart(android.support.v4.app.Fragment)' on a null object reference
java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.v4.app.FragmentManagerImpl.performPendingDeferredStart(android.support.v4.app.Fragment)' on a null object reference	at android.support.v4.app.FragmentPagerAdapter.setPrimaryItem(FragmentPagerAdapter.java:130)	at android.support.v4.view.ViewPager.populate(ViewPager.java:1175)	at android.support.v4.view.ViewPager.setCurrentItemInternal(ViewPager.java:608)	at android.support.v4.view.ViewPager.setCurrentItemInternal(ViewPager.java:570)	at android.support.v4.view.ViewPager.setCurrentItem(ViewPager.java:551)	at fragments.CategoryActivityFragment.onCategoryClicked(CategoryActivityFragment.java:56)	at adapters.CategoriesAdapter$1.onClick(CategoriesAdapter.java:84)	at android.view.View.performClick(View.java:5207)	at android.view.View$PerformClick.run(View.java:21168)	at android.os.Handler.handleCallback(Handler.java:746)	at android.os.Handler.dispatchMessage(Handler.java:95)	at android.os.Looper.loop(Looper.java:148)	at android.app.ActivityThread.main(ActivityThread.java:5443)	at java.lang.reflect.Method.invoke(Native Method)	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:728)	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)