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via Stack Overflow by Miki P
, 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
via GitHub by lenisko
, 2 years 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.Fragment.setUserVisibleHint(Fragment.java:879)	at android.support.v4.app.FragmentStatePagerAdapter.setPrimaryItem(FragmentStatePagerAdapter.java:152)	at android.support.v4.view.ViewPager.populate(ViewPager.java:1104)	at android.support.v4.view.ViewPager.populate(ViewPager.java:952)	at android.support.v4.view.ViewPager.onTouchEvent(ViewPager.java:2037)	at android.view.View.dispatchTouchEvent(View.java:9300)	at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2547)	at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2240)	at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2553)	at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2197)	at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2553)	at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2197)	at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2553)	at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2197)	at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2553)	at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2197)	at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2553)	at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2197)	at com.android.internal.policy.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:2403)	at com.android.internal.policy.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1737)	at android.app.Activity.dispatchTouchEvent(Activity.java:2771)	at com.android.internal.policy.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:2364)	at android.view.View.dispatchPointerEvent(View.java:9520)	at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:4238)	at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:4104)	at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3650)	at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3703)	at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3669)	at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:3795)	at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3677)	at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:3852)	at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3650)	at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3703)	at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3669)	at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3677)	at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3650)	at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:5932)	at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:5906)	at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:5867)	at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:6035)	at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:185)	at android.os.MessageQueue.nativePollOnce(Native Method)	at android.os.MessageQueue.next(MessageQueue.java:323)	at android.os.Looper.loop(Looper.java:135)	at android.app.ActivityThread.main(ActivityThread.java:5422)	at java.lang.reflect.Method.invoke(Native Method)	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)