Android Viewpager 当一个Fragment中存在ScrollView时，滑动出现崩溃。

Question

如题，崩溃log如下：

java.lang.ClassCastException: android.view.AbsSavedState$1 cannot be cast to android.widget.ScrollView$SavedState
                                                                          at android.widget.ScrollView.onRestoreInstanceState(ScrollView.java:1806)
                                                                          at android.view.View.dispatchRestoreInstanceState(View.java:14042)
                                                                          at android.view.ViewGroup.dispatchRestoreInstanceState(ViewGroup.java:3018)
                                                                          at android.view.ViewGroup.dispatchRestoreInstanceState(ViewGroup.java:3024)
                                                                          at android.view.View.restoreHierarchyState(View.java:14020)
                                                                          at android.app.Fragment.restoreViewState(Fragment.java:645)
                                                                          at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:926)
                                                                          at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1079)
                                                                          at android.app.BackStackRecord.run(BackStackRecord.java:852)
                                                                          at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1485)
                                                                          at android.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:493)
                                                                          at android.support.v13.app.FragmentStatePagerAdapter.finishUpdate(FragmentStatePagerAdapter.java:167)
                                                                          at android.support.v4.view.ViewPager.populate(ViewPager.java:1106)
                                                                          at android.support.v4.view.ViewPager.populate(ViewPager.java:952)
                                                                          at android.support.v4.view.ViewPager$3.run(ViewPager.java:251)
                                                                          at android.support.v4.view.ViewPager.completeScroll(ViewPager.java:1849)
                                                                          at android.support.v4.view.ViewPager.onInterceptTouchEvent(ViewPager.java:1978)
                                                                          at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2000)
                                                                          at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2523)
                                                                          at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2114)
                                                                          at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2523)
                                                                          at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2114)
                                                                          at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2523)

Answer 1

Format conversion exception, when inheriting multiple subclasses of the parent VIEW, because the id of the set view is repeated. Just modify the duplicate ID and it’s done

Answer 2

The code should be posted. I have used the interface like the title and there is no problem.