Fragment com.ihsanbal.introview.FragmentPage must be a public static class to be properly recreated from instance state.

[landsnail]

there throw an exception which named : IllegalStateException the error message：

java.lang.IllegalStateException: Fragment com.ihsanbal.introview.FragmentPage must be a public static class to be properly recreated from instance state. at android.support.v4.app.BackStackRecord.doAddOp(BackStackRecord.java:384) at android.support.v4.app.BackStackRecord.add(BackStackRecord.java:375) at android.support.v4.app.FragmentPagerAdapter.instantiateItem(FragmentPagerAdapter.java:103) at android.support.v4.view.ViewPager.addNewItem(ViewPager.java:1034) at android.support.v4.view.ViewPager.populate(ViewPager.java:1182) at android.support.v4.view.ViewPager.populate(ViewPager.java:1116) at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1642) at android.view.View.measure(View.java:18811) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5952) at android.widget.FrameLayout.onMeasure(FrameLayout.java:194) at android.view.View.measure(View.java:18811) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5952) at android.widget.FrameLayout.onMeasure(FrameLayout.java:194) at android.support.v7.widget.ContentFrameLayout.onMeasure(ContentFrameLayout.java:139) at android.view.View.measure(View.java:18811) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5952) at android.support.v7.widget.ActionBarOverlayLayout.onMeasure(ActionBarOverlayLayout.java:393) at android.view.View.measure(View.java:18811) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5952) at android.widget.FrameLayout.onMeasure(FrameLayout.java:194) at android.view.View.measure(View.java:18811) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5952) at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1465) at android.widget.LinearLayout.measureVertical(LinearLayout.java:748) at android.widget.LinearLayout.onMeasure(LinearLayout.java:630) at android.view.View.measure(View.java:18811) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5952) at android.widget.FrameLayout.onMeasure(FrameLayout.java:194) at com.android.internal.policy.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2643) at android.view.View.measure(View.java:18811) at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2127) at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1243) at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1479) at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1134) at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6050) at android.view.Choreographer$CallbackRecord.run(Choreographer.java:860) at android.view.Choreographer.doCallbacks(Choreographer.java:672) at android.view.Choreographer.doFrame(Choreographer.java:608) at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:846) at android.os.Handler.handleCallback(Handler.java:739) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:148) at android.app.ActivityThread.main(ActivityThread.java:5441) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:738) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:628)

[landsnail]

move all class of this library and remove an annotation which named "@SuppressLint("ValidFragment")" that decorate the FragmentPage class will work , i have done and it work well.

[preethamsridhar]

Move all class of this library to where?