v7 RecyclerView NullPointerException AccessibilityDelegateCompat.getBridge()

Question

虽然运行我的 recyclerview 列表片段出现此错误

 java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.Object android.support.v4.view.AccessibilityDelegateCompat.getBridge()' on a null object reference
    at android.support.v4.view.ViewCompat$ICSViewCompatImpl.setAccessibilityDelegate(ViewCompat.java:923)
    at android.support.v4.view.ViewCompat.setAccessibilityDelegate(ViewCompat.java:1343)
    at android.support.v7.widget.RecyclerView$Recycler.addViewHolderToRecycledViewPool(RecyclerView.java:3900)
    at android.support.v7.widget.RecyclerView$Recycler.recycleCachedViewAt(RecyclerView.java:3843)
    at android.support.v7.widget.RecyclerView$Recycler.recycleViewHolderInternal(RecyclerView.java:3880)
    at android.support.v7.widget.RecyclerView$Recycler.recycleView(RecyclerView.java:3804)
    at android.support.v7.widget.RecyclerView$LayoutManager.removeAndRecycleViewAt(RecyclerView.java:5529)
    at android.support.v7.widget.LinearLayoutManager.recycleChildren(LinearLayoutManager.java:1139)
    at android.support.v7.widget.LinearLayoutManager.recycleViewsFromStart(LinearLayoutManager.java:1180)
    at android.support.v7.widget.LinearLayoutManager.recycleByLayoutState(LinearLayoutManager.java:1244)
    at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1268)
    at android.support.v7.widget.LinearLayoutManager.scrollBy(LinearLayoutManager.java:1102)
    at android.support.v7.widget.LinearLayoutManager.scrollVerticallyBy(LinearLayoutManager.java:959)
    at android.support.v7.widget.RecyclerView.scrollByInternal(RecyclerView.java:1047)
    at android.support.v7.widget.RecyclerView.onTouchEvent(RecyclerView.java:1768)
    at android.view.View.dispatchTouchEvent(View.java:8388)
    at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2424)
    at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2158)
    at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2430)
    at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2172)
    at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2430)
    at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2172)
    at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2430)
    at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2172)
    at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2430)
    at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2172)
    at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2430)
    at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2172)
    at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2430)
    at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2172)
    at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2430)
    at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2172)
    at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2430)
    at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2172)
    at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2430)
    at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2172)
    at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2430)
    at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2172)
    at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:2314)
    at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1692)
    at android.app.Activity.dispatchTouchEvent(Activity.java:2739)
    at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:2275)
    at android.view.View.dispatchPointerEvent(View.java:8578)
    at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:4021)
    at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:3887)
    at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3449)
    at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.j
03-20 14:34:37.691: I/Process(9568): Sending signal. PID: 9568 SIG: 9

Answer 1

确保您的依赖项是最新的，我遇到了同样的问题并在我的 build.gradle 文件中更改为这个问题；

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:support-v4:22.+'
    compile 'com.android.support:appcompat-v7:22.+'
    compile 'com.android.support:recyclerview-v7:22.+'
}

Answer 2

我删除了 adt 包中的支持库并重新安装。在我的项目中复制并粘贴支持 v4 jar 和 support-v7-recyclerview.jar 之后。现在它对我来说工作正常。

Answer 3

这似乎是修订版 22 中的错误。修订版 21 对我来说工作正常。您始终可以提取 RecyclerView 源，然后将其编译为 .jar 并将其导入到您的项目中。（我是在 Eclipse 中完成的，我还不想移动到 Android Studio。）

来源可以在 \extras\android\m2repository\com\android\support\recyclerview-v7.0.3\recyclerview-v7-21.0.3-sources.jar

（我猜它需要 Android 从 Android SDK 管理器安装支持存储库）

还有一个开放票https://code.google.com/p/android/issues/detail?can=2&start=0&num=100&q=&colspec=ID%20Type%20Status%20Owner%20Summary%20Stars&groupby=&sort=&id=160781

v7 RecyclerView NullPointerException AccessibilityDelegateCompat.getBridge()

v7 RecyclerView NullPointerException AccessibilityDelegateCompat.getBridge()

android

nullpointerexception

android-recyclerview