Devlight/InfiniteCycleViewPager

When i use inside fragment get Error

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#21 opened on Sep 28, 2016

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 (6 comments) (0 reactions) (0 assignees)Java (5,770 stars) (838 forks)batch import
help wanted

Description

Get error when i use it a fragment of "android.support.v4.view.ViewPager" .

E/ViewPager: Error changing children drawing order
                                                                  java.lang.IllegalAccessException: access to method denied
                                                                      at java.lang.reflect.Method.invokeNative(Native Method)
                                                                      at java.lang.reflect.Method.invoke(Method.java:515)
                                                                      at android.support.v4.view.ViewPager.setChildrenDrawingOrderEnabledCompat(ViewPager.java:789)
                                                                      at android.support.v4.view.ViewPager.setPageTransformer(ViewPager.java:768)
                                                                      at com.gigamole.infinitecycleviewpager.HorizontalInfiniteCycleViewPager.setPageTransformer(HorizontalInfiniteCycleViewPager.java:109)
                                                                      at com.gigamole.infinitecycleviewpager.InfiniteCycleManager.<init>(InfiniteCycleManager.java:143)
                                                                      at com.gigamole.infinitecycleviewpager.HorizontalInfiniteCycleViewPager.init(HorizontalInfiniteCycleViewPager.java:30)
                                                                      at com.gigamole.infinitecycleviewpager.HorizontalInfiniteCycleViewPager.<init>(HorizontalInfiniteCycleViewPager.java:26)
                                                                      at java.lang.reflect.Constructor.constructNative(Native Method)
                                                                      at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
                                                                      at android.view.LayoutInflater.createView(LayoutInflater.java:601)
                                                                      at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:703)
                                                                      at android.view.LayoutInflater.rInflate(LayoutInflater.java:762)
                                                                      at android.view.LayoutInflater.rInflate(LayoutInflater.java:771)
                                                                      at android.view.LayoutInflater.inflate(LayoutInflater.java:499)
                                                                      at android.view.LayoutInflater.inflate(LayoutInflater.java:398)
at android.support.v4.app.Fragment.performCreateView(Fragment.java:2080)
                                                                      at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1108)
                                                                      at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1290)
                                                                      at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:801)
                                                                      at android.support.v4.app.FragmentManagerImpl.execSingleAction(FragmentManager.java:1638)
                                                                      at android.support.v4.app.BackStackRecord.commitNowAllowingStateLoss(BackStackRecord.java:679)
                                                                      at android.support.v4.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:143)
                                                                      at android.support.v4.view.ViewPager.populate(ViewPager.java:1240)
                                                                      at android.support.v4.view.ViewPager.populate(ViewPager.java:1088)
                                                                      at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1614)
                                                                      at android.view.View.measure(View.java:16677)
                                                                      at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5286)
                                                                      at android.support.design.widget.CoordinatorLayout.onMeasureChild(CoordinatorLayout.java:700)
                                                                      at android.support.design.widget.HeaderScrollingViewBehavior.onMeasureChild(HeaderScrollingViewBehavior.java:90)
                                                                      at android.support.design.widget.AppBarLayout$ScrollingViewBehavior.onMeasureChild(AppBarLayout.java:1364)
                                                                      at android.support.design.widget.CoordinatorLayout.onMeasure(CoordinatorLayout.java:765)
                                                                      at android.view.View.measure(View.java:16677)
                                                                      at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5286)
                                                                      at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
                                                                      at android.support.v7.widget.ContentFrameLayout.onMeasure(ContentFrameLayout.java:135)
                                                                      at android.view.View.measure(View.java:16677)
                                                                      at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5286)
                                                                      at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1404)
                                                                      at android.widget.LinearLayout.measureVertical(LinearLayout.java:695)
                                                                      at android.widget.LinearLayout.onMeasure(LinearLayout.java:588)
                                                                      at android.view.View.measure(View.java:16677)
                                                                      at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5286)
                                                                      at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
                                                                      at android.view.View.measure(View.java:16677)
                                                                      at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5286)
                                                                      at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1404)
                                                                      at android.widget.LinearLayout.measureVertical(LinearLayout.java:695)
                                                                      at android.widget.LinearLayout.onMeasure(LinearLayout.java:588)
                                                                      at android.view.View.measure(View.java:16677)
                                                                      at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5286)
                                                                    at android.widget

Contributor guide

Tech stack
java
Domain
mobile
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
needs investigation
Prerequisites
JavaAndroid development
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
25
Research direction
Investigate the setChildrenDrawingOrderEnabledCompat method in ViewPager. The error occurs because the method tries to invoke a private method via reflection on a newer Android API version where access is restricted. Look into alternatives such as using View.setChildrenDrawingOrderEnabled or adjusting the reflection to use setAccessible(true) appropriately. Check the HorizontalInfiniteCycleViewPager and InfiniteCycleManager source code to understand the call chain. Also verify if the issue is resolved by updating the support library version or using a different approach for view ordering.