AppBarLayout.onCreateDrawableState NullPointerException：尝试获取空数组的长度

【问题标题】：AppBarLayout.onCreateDrawableState NullPointerException: Attempt to get length of null arrayAppBarLayout.onCreateDrawableState NullPointerException：尝试获取空数组的长度
【发布时间】：2016-10-14 07:15:10
【问题描述】：

我们在三星 6.0.1 设备上遇到了太多此类崩溃。我们甚至得到了具有相同操作系统版本的相同设备，但我们仍然无法自行复制它。我们正在收到其他膨胀异常，可能它们是相关的。

这个问题有解决办法吗？

支持库版本 - 24.2.1

这是完整的堆栈跟踪：

Exception android.view.InflateException: Binary XML file line #21: Binary XML file line #2: Error inflating class android.support.design.widget.AppBarLayout
android.view.LayoutInflater.inflate (LayoutInflater.java:551)
android.view.LayoutInflater.inflate (LayoutInflater.java:429)
com.myapp.profile.ProfileFragment.onCreateView (ProfileFragment.java:163)
android.support.v4.app.Fragment.performCreateView (Fragment.java:2080)
android.support.v4.app.FragmentManagerImpl.moveToState (FragmentManager.java:1108)
android.support.v4.app.FragmentManagerImpl.moveToState (FragmentManager.java:1290)
android.support.v4.app.BackStackRecord.run (BackStackRecord.java:801)
android.support.v4.app.FragmentManagerImpl.execSingleAction (FragmentManager.java:1638)
android.support.v4.app.BackStackRecord.commitNowAllowingStateLoss (BackStackRecord.java:679)
android.support.v4.app.FragmentPagerAdapter.finishUpdate (FragmentPagerAdapter.java:143)
android.support.v4.view.ViewPager.populate (ViewPager.java:1240)
android.support.v4.view.ViewPager.populate (ViewPager.java:1088)
android.support.v4.view.ViewPager.onMeasure (ViewPager.java:1614)
android.view.View.measure (View.java:20166)
android.view.ViewGroup.measureChildWithMargins (ViewGroup.java:6328)
android.support.design.widget.CoordinatorLayout.onMeasureChild (CoordinatorLayout.java:700)
android.support.design.widget.CoordinatorLayout.onMeasure (CoordinatorLayout.java:767)
android.view.View.measure (View.java:20166)
android.view.ViewGroup.measureChildWithMargins (ViewGroup.java:6328)
android.widget.LinearLayout.measureChildBeforeLayout (LinearLayout.java:1464)
android.widget.LinearLayout.measureVertical (LinearLayout.java:747)
android.widget.LinearLayout.onMeasure (LinearLayout.java:629)
android.view.View.measure (View.java:20166)
com.sothree.slidinguppanel.SlidingUpPanelLayout.onMeasure (SlidingUpPanelLayout.java:804)
android.view.View.measure (View.java:20166)
android.support.v4.widget.DrawerLayout.onMeasure (DrawerLayout.java:1085)
android.view.View.measure (View.java:20166)
android.view.ViewGroup.measureChildWithMargins (ViewGroup.java:6328)
android.widget.FrameLayout.onMeasure (FrameLayout.java:194)
android.view.View.measure (View.java:20166)
android.view.ViewGroup.measureChildWithMargins (ViewGroup.java:6328)
android.widget.FrameLayout.onMeasure (FrameLayout.java:194)
android.support.v7.widget.ContentFrameLayout.onMeasure (ContentFrameLayout.java:135)
android.view.View.measure (View.java:20166)
android.view.ViewGroup.measureChildWithMargins (ViewGroup.java:6328)
android.widget.FrameLayout.onMeasure (FrameLayout.java:194)
android.view.View.measure (View.java:20166)
android.view.ViewGroup.measureChildWithMargins (ViewGroup.java:6328)
android.widget.FrameLayout.onMeasure (FrameLayout.java:194)
android.view.View.measure (View.java:20166)
android.view.ViewGroup.measureChildWithMargins (ViewGroup.java:6328)
android.widget.LinearLayout.measureChildBeforeLayout (LinearLayout.java:1464)
android.widget.LinearLayout.measureVertical (LinearLayout.java:747)
android.widget.LinearLayout.onMeasure (LinearLayout.java:629)
android.view.View.measure (View.java:20166)
android.view.ViewGroup.measureChildWithMargins (ViewGroup.java:6328)
android.widget.FrameLayout.onMeasure (FrameLayout.java:194)
com.android.internal.policy.PhoneWindow$DecorView.onMeasure (PhoneWindow.java:3143)
android.view.View.measure (View.java:20166)
android.view.ViewRootImpl.performMeasure (ViewRootImpl.java:2644)
android.view.ViewRootImpl.measureHierarchy (ViewRootImpl.java:1599)
android.view.ViewRootImpl.performTraversals (ViewRootImpl.java:1891)
android.view.ViewRootImpl.doTraversal (ViewRootImpl.java:1487)
android.view.ViewRootImpl$TraversalRunnable.run (ViewRootImpl.java:7450)
android.view.Choreographer$CallbackRecord.run (Choreographer.java:920)
android.view.Choreographer.doCallbacks (Choreographer.java:695)
android.view.Choreographer.doFrame (Choreographer.java:631)
android.view.Choreographer$FrameDisplayEventReceiver.run (Choreographer.java:906)
android.os.Handler.handleCallback (Handler.java:739)
android.os.Handler.dispatchMessage (Handler.java:95)
arrow_drop_down
Caused by android.view.InflateException: Binary XML file line #2: Error inflating class android.support.design.widget.AppBarLayout
android.view.LayoutInflater.createView (LayoutInflater.java:657)
android.view.LayoutInflater.createViewFromTag (LayoutInflater.java:776)
android.view.LayoutInflater.parseInclude (LayoutInflater.java:966)
android.view.LayoutInflater.rInflate (LayoutInflater.java:843)
android.view.LayoutInflater.rInflateChildren (LayoutInflater.java:810)
android.view.LayoutInflater.rInflate (LayoutInflater.java:855)
android.view.LayoutInflater.rInflateChildren (LayoutInflater.java:810)
android.view.LayoutInflater.rInflate (LayoutInflater.java:855)
android.view.LayoutInflater.rInflateChildren (LayoutInflater.java:810)
android.view.LayoutInflater.inflate (LayoutInflater.java:527)
android.view.LayoutInflater.inflate (LayoutInflater.java:429)
com.myapp.profile.ProfileFragment.onCreateView (ProfileFragment.java:163)
android.support.v4.app.Fragment.performCreateView (Fragment.java:2080)
android.support.v4.app.FragmentManagerImpl.moveToState (FragmentManager.java:1108)
android.support.v4.app.FragmentManagerImpl.moveToState (FragmentManager.java:1290)
android.support.v4.app.BackStackRecord.run (BackStackRecord.java:801)
android.support.v4.app.FragmentManagerImpl.execSingleAction (FragmentManager.java:1638)
android.support.v4.app.BackStackRecord.commitNowAllowingStateLoss (BackStackRecord.java:679)
android.support.v4.app.FragmentPagerAdapter.finishUpdate (FragmentPagerAdapter.java:143)
android.support.v4.view.ViewPager.populate (ViewPager.java:1240)
android.support.v4.view.ViewPager.populate (ViewPager.java:1088)
android.support.v4.view.ViewPager.onMeasure (ViewPager.java:1614)
android.view.View.measure (View.java:20166)
android.view.ViewGroup.measureChildWithMargins (ViewGroup.java:6328)
android.support.design.widget.CoordinatorLayout.onMeasureChild (CoordinatorLayout.java:700)
android.support.design.widget.CoordinatorLayout.onMeasure (CoordinatorLayout.java:767)
android.view.View.measure (View.java:20166)
android.view.ViewGroup.measureChildWithMargins (ViewGroup.java:6328)
android.widget.LinearLayout.measureChildBeforeLayout (LinearLayout.java:1464)
android.widget.LinearLayout.measureVertical (LinearLayout.java:747)
android.widget.LinearLayout.onMeasure (LinearLayout.java:629)
android.view.View.measure (View.java:20166)
com.sothree.slidinguppanel.SlidingUpPanelLayout.onMeasure (SlidingUpPanelLayout.java:804)
android.view.View.measure (View.java:20166)
android.support.v4.widget.DrawerLayout.onMeasure (DrawerLayout.java:1085)
android.view.View.measure (View.java:20166)
android.view.ViewGroup.measureChildWithMargins (ViewGroup.java:6328)
android.widget.FrameLayout.onMeasure (FrameLayout.java:194)
android.view.View.measure (View.java:20166)
android.view.ViewGroup.measureChildWithMargins (ViewGroup.java:6328)
android.widget.FrameLayout.onMeasure (FrameLayout.java:194)
android.support.v7.widget.ContentFrameLayout.onMeasure (ContentFrameLayout.java:135)
android.view.View.measure (View.java:20166)
android.view.ViewGroup.measureChildWithMargins (ViewGroup.java:6328)
android.widget.FrameLayout.onMeasure (FrameLayout.java:194)
android.view.View.measure (View.java:20166)
android.view.ViewGroup.measureChildWithMargins (ViewGroup.java:6328)
android.widget.FrameLayout.onMeasure (FrameLayout.java:194)
android.view.View.measure (View.java:20166)
android.view.ViewGroup.measureChildWithMargins (ViewGroup.java:6328)
android.widget.LinearLayout.measureChildBeforeLayout (LinearLayout.java:1464)
android.widget.LinearLayout.measureVertical (LinearLayout.java:747)
android.widget.LinearLayout.onMeasure (LinearLayout.java:629)
android.view.View.measure (View.java:20166)
android.view.ViewGroup.measureChildWithMargins (ViewGroup.java:6328)
android.widget.FrameLayout.onMeasure (FrameLayout.java:194)
com.android.internal.policy.PhoneWindow$DecorView.onMeasure (PhoneWindow.java:3143)
android.view.View.measure (View.java:20166)
android.view.ViewRootImpl.performMeasure (ViewRootImpl.java:2644)
android.view.ViewRootImpl.measureHierarchy (ViewRootImpl.java:1599)
arrow_drop_down
Caused by java.lang.reflect.InvocationTargetException:
java.lang.reflect.Constructor.newInstance (Constructor.java)
android.view.LayoutInflater.createView (LayoutInflater.java:631)
android.view.LayoutInflater.createViewFromTag (LayoutInflater.java:776)
android.view.LayoutInflater.parseInclude (LayoutInflater.java:966)
android.view.LayoutInflater.rInflate (LayoutInflater.java:843)
android.view.LayoutInflater.rInflateChildren (LayoutInflater.java:810)
android.view.LayoutInflater.rInflate (LayoutInflater.java:855)
android.view.LayoutInflater.rInflateChildren (LayoutInflater.java:810)
android.view.LayoutInflater.rInflate (LayoutInflater.java:855)
android.view.LayoutInflater.rInflateChildren (LayoutInflater.java:810)
android.view.LayoutInflater.inflate (LayoutInflater.java:527)
android.view.LayoutInflater.inflate (LayoutInflater.java:429)
com.myapp.profile.ProfileFragment.onCreateView (ProfileFragment.java:163)
android.support.v4.app.Fragment.performCreateView (Fragment.java:2080)
android.support.v4.app.FragmentManagerImpl.moveToState (FragmentManager.java:1108)
android.support.v4.app.FragmentManagerImpl.moveToState (FragmentManager.java:1290)
android.support.v4.app.BackStackRecord.run (BackStackRecord.java:801)
android.support.v4.app.FragmentManagerImpl.execSingleAction (FragmentManager.java:1638)
android.support.v4.app.BackStackRecord.commitNowAllowingStateLoss (BackStackRecord.java:679)
android.support.v4.app.FragmentPagerAdapter.finishUpdate (FragmentPagerAdapter.java:143)
android.support.v4.view.ViewPager.populate (ViewPager.java:1240)
android.support.v4.view.ViewPager.populate (ViewPager.java:1088)
android.support.v4.view.ViewPager.onMeasure (ViewPager.java:1614)
android.view.View.measure (View.java:20166)
android.view.ViewGroup.measureChildWithMargins (ViewGroup.java:6328)
android.support.design.widget.CoordinatorLayout.onMeasureChild (CoordinatorLayout.java:700)
android.support.design.widget.CoordinatorLayout.onMeasure (CoordinatorLayout.java:767)
android.view.View.measure (View.java:20166)
android.view.ViewGroup.measureChildWithMargins (ViewGroup.java:6328)
android.widget.LinearLayout.measureChildBeforeLayout (LinearLayout.java:1464)
android.widget.LinearLayout.measureVertical (LinearLayout.java:747)
android.widget.LinearLayout.onMeasure (LinearLayout.java:629)
android.view.View.measure (View.java:20166)
com.sothree.slidinguppanel.SlidingUpPanelLayout.onMeasure (SlidingUpPanelLayout.java:804)
android.view.View.measure (View.java:20166)
android.support.v4.widget.DrawerLayout.onMeasure (DrawerLayout.java:1085)
android.view.View.measure (View.java:20166)
android.view.ViewGroup.measureChildWithMargins (ViewGroup.java:6328)
android.widget.FrameLayout.onMeasure (FrameLayout.java:194)
android.view.View.measure (View.java:20166)
android.view.ViewGroup.measureChildWithMargins (ViewGroup.java:6328)
android.widget.FrameLayout.onMeasure (FrameLayout.java:194)
android.support.v7.widget.ContentFrameLayout.onMeasure (ContentFrameLayout.java:135)
android.view.View.measure (View.java:20166)
android.view.ViewGroup.measureChildWithMargins (ViewGroup.java:6328)
android.widget.FrameLayout.onMeasure (FrameLayout.java:194)
android.view.View.measure (View.java:20166)
android.view.ViewGroup.measureChildWithMargins (ViewGroup.java:6328)
android.widget.FrameLayout.onMeasure (FrameLayout.java:194)
android.view.View.measure (View.java:20166)
android.view.ViewGroup.measureChildWithMargins (ViewGroup.java:6328)
android.widget.LinearLayout.measureChildBeforeLayout (LinearLayout.java:1464)
android.widget.LinearLayout.measureVertical (LinearLayout.java:747)
android.widget.LinearLayout.onMeasure (LinearLayout.java:629)
android.view.View.measure (View.java:20166)
android.view.ViewGroup.measureChildWithMargins (ViewGroup.java:6328)
android.widget.FrameLayout.onMeasure (FrameLayout.java:194)
com.android.internal.policy.PhoneWindow$DecorView.onMeasure (PhoneWindow.java:3143)
android.view.View.measure (View.java:20166)
android.view.ViewRootImpl.performMeasure (ViewRootImpl.java:2644)
arrow_drop_down
Caused by java.lang.NullPointerException: Attempt to get length of null array
android.support.design.widget.AppBarLayout.onCreateDrawableState (AppBarLayout.java:494)
android.view.View.getDrawableState (View.java:18365)
android.view.View.setBackgroundDrawable (View.java:18614)
android.view.View.setBackground (View.java:18551)
android.view.View.<init> (View.java:4621)
android.view.ViewGroup.<init> (ViewGroup.java:589)
android.widget.LinearLayout.<init> (LinearLayout.java:202)
android.widget.LinearLayout.<init> (LinearLayout.java:198)
android.widget.LinearLayout.<init> (LinearLayout.java:194)
android.support.design.widget.AppBarLayout.<init> (AppBarLayout.java:151)
java.lang.reflect.Constructor.newInstance (Constructor.java)
android.view.LayoutInflater.createView (LayoutInflater.java:631)
android.view.LayoutInflater.createViewFromTag (LayoutInflater.java:776)
android.view.LayoutInflater.parseInclude (LayoutInflater.java:966)
android.view.LayoutInflater.rInflate (LayoutInflater.java:843)
android.view.LayoutInflater.rInflateChildren (LayoutInflater.java:810)
android.view.LayoutInflater.rInflate (LayoutInflater.java:855)
android.view.LayoutInflater.rInflateChildren (LayoutInflater.java:810)
android.view.LayoutInflater.rInflate (LayoutInflater.java:855)
android.view.LayoutInflater.rInflateChildren (LayoutInflater.java:810)
android.view.LayoutInflater.inflate (LayoutInflater.java:527)
android.view.LayoutInflater.inflate (LayoutInflater.java:429)
com.myapp.profile.ProfileFragment.onCreateView (ProfileFragment.java:163)
android.support.v4.app.Fragment.performCreateView (Fragment.java:2080)
android.support.v4.app.FragmentManagerImpl.moveToState (FragmentManager.java:1108)
android.support.v4.app.FragmentManagerImpl.moveToState (FragmentManager.java:1290)
android.support.v4.app.BackStackRecord.run (BackStackRecord.java:801)
android.support.v4.app.FragmentManagerImpl.execSingleAction (FragmentManager.java:1638)
android.support.v4.app.BackStackRecord.commitNowAllowingStateLoss (BackStackRecord.java:679)
android.support.v4.app.FragmentPagerAdapter.finishUpdate (FragmentPagerAdapter.java:143)
android.support.v4.view.ViewPager.populate (ViewPager.java:1240)
android.support.v4.view.ViewPager.populate (ViewPager.java:1088)
android.support.v4.view.ViewPager.onMeasure (ViewPager.java:1614)
android.view.View.measure (View.java:20166)
android.view.ViewGroup.measureChildWithMargins (ViewGroup.java:6328)
android.support.design.widget.CoordinatorLayout.onMeasureChild (CoordinatorLayout.java:700)
android.support.design.widget.CoordinatorLayout.onMeasure (CoordinatorLayout.java:767)
android.view.View.measure (View.java:20166)
android.view.ViewGroup.measureChildWithMargins (ViewGroup.java:6328)
android.widget.LinearLayout.measureChildBeforeLayout (LinearLayout.java:1464)
android.widget.LinearLayout.measureVertical (LinearLayout.java:747)
android.widget.LinearLayout.onMeasure (LinearLayout.java:629)
android.view.View.measure (View.java:20166)
com.sothree.slidinguppanel.SlidingUpPanelLayout.onMeasure (SlidingUpPanelLayout.java:804)
android.view.View.measure (View.java:20166)
android.support.v4.widget.DrawerLayout.onMeasure (DrawerLayout.java:1085)
android.view.View.measure (View.java:20166)
android.view.ViewGroup.measureChildWithMargins (ViewGroup.java:6328)
android.widget.FrameLayout.onMeasure (FrameLayout.java:194)
android.view.View.measure (View.java:20166)
android.view.ViewGroup.measureChildWithMargins (ViewGroup.java:6328)
android.widget.FrameLayout.onMeasure (FrameLayout.java:194)
android.support.v7.widget.ContentFrameLayout.onMeasure (ContentFrameLayout.java:135)
android.view.View.measure (View.java:20166)
android.view.ViewGroup.measureChildWithMargins (ViewGroup.java:6328)
android.widget.FrameLayout.onMeasure (FrameLayout.java:194)
android.view.View.measure (View.java:20166)
android.view.ViewGroup.measureChildWithMargins (ViewGroup.java:6328)
android.widget.FrameLayout.onMeasure (FrameLayout.java:194)
android.view.View.measure (View.java:20166)

【问题讨论】：

  • 三星应该只销售吸尘器。别管这个。您是否为 appbar 布局设置了一些可绘制对象？也许 statelistdrawable 的海拔？这真的是一团糟，因为整数数组是原始的，但它就像没有初始化一样抛出。如果应用程序被移动到 sd 存储并且 drawable 被读取为普通文件，这可能会由于权限而引发。
  • 我也遇到了同样的情况，但是库 25.3.1
  • @mstrengis 只是让您知道：Android 团队已修复此问题，并将很快发布错误修复 - issuetracker.google.com/issues/37139450
  • @Javier 你解决了吗？我也在用 25.3.1。

标签： android android-layout android-appbarlayout


【解决方案1】：

当 AppBarLayout 尝试初始化其滚动条时会引发此异常 - 您的 Activity 样式很有可能设置了默认滚动条样式并且 AppBarLayout 继承了它。

最简单的解决方案是确保 AppBarLayout 永远不会使用滚动条，只需执行以下操作：

<android.support.design.widget.AppBarLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:scrollbars="none">

    <!--YOUR LAYOUT-->

</android.support.design.widget.AppBarLayout>

我很确定我在 Android 项目中没有看到针对此问题的正确错误报告，所以我想是时候报告一个了。

编辑

我创建了示例应用程序来重现此问题 - 您可以在 here 找到它。当您在使用 API22 的设备上启动应用程序 issue-254934 时 - 两种 AppBarLayout 配置都有效，对于 API23 及更高版本，其中之一会导致与您在此处报告的完全相同的异常。

编辑

Issue-254923 已修复，错误修正将在未来版本中发布

【讨论】：

  • 感谢您的回答。您能否提供有关如何重现该崩溃的步骤？我们自己无法重现那次崩溃
  • @mstrengis 只是为了让您知道，我已将示例项目添加到我的答案中
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