RecyclerView错误ConcurrentModificationException仅API 23＆amp; API 26

时间：2017-08-15 05:28:03

标签： android android-recyclerview concurrentmodification android-8.0-oreo

我在RecyclerView中获得了ConcurrentModificationException，仅在API 23＆amp; 26，我该怎样绕过这个？ 这是我的RecyclerView设置：

private void setUpRecyclerView() {

    int maxIndex = 0;
    if (game.size() < 3) {
        maxIndex = game.size();
    } else if (game.size() >= 3) {
        maxIndex = 3;
    }
    recyclerView = findViewById(R.id.home_recycler_view);
    adapter = new GameCardListMiniAdapter(this, game.subList(0, maxIndex));
    recyclerView.setAdapter(adapter);
    LinearLayoutManager linearLayoutManager = new LinearLayoutManager(ActivityHome.this);
    linearLayoutManager.setOrientation(LinearLayoutManager.HORIZONTAL);
    recyclerView.setHasFixedSize(true);
    recyclerView.setLayoutManager(linearLayoutManager);
    recyclerView.setItemAnimator(new DefaultItemAnimator());
}

从game处理数据后，我调用recyclerView.swapAdapter(adapter, true);并获取错误，但仅在前面提到的API中，在API 15的其他API中，一切正常。 这是API 23的堆栈跟踪：

E/Surface: getSlotFromBufferLocked: unknown buffer: 0xa0d2a5a0
D/AndroidRuntime: Shutting down VM
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.racu.cardgame, PID: 26900
java.util.ConcurrentModificationException
    at java.util.AbstractList$SubAbstractList.size(AbstractList.java:360)
    at com.example.racu.cardgame.adapters.cardgameListMiniAdapter.getItemCount(cardgameListMiniAdapter.java:68)
    at android.support.v7.widget.RecyclerView.dispatchLayoutStep1(RecyclerView.java:3603)
    at android.support.v7.widget.RecyclerView.onMeasure(RecyclerView.java:3103)
    at android.view.View.measure(View.java:18788)
    at android.support.v4.widget.NestedScrollView.measureChildWithMargins(NestedScrollView.java:1446)
    at android.widget.FrameLayout.onMeasure(FrameLayout.java:194)
    at android.support.v4.widget.NestedScrollView.onMeasure(NestedScrollView.java:512)
    at android.view.View.measure(View.java:18788)
    at android.support.constraint.ConstraintLayout.internalMeasureChildren(ConstraintLayout.java:934)
    at android.support.constraint.ConstraintLayout.onMeasure(ConstraintLayout.java:973)
    at android.view.View.measure(View.java:18788)
    at android.support.constraint.ConstraintLayout.internalMeasureChildren(ConstraintLayout.java:934)
    at android.support.constraint.ConstraintLayout.onMeasure(ConstraintLayout.java:973)
    at android.view.View.measure(View.java:18788)
    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5951)
    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:18788)
    at android.support.v4.widget.DrawerLayout.onMeasure(DrawerLayout.java:1060)
    at android.view.View.measure(View.java:18788)
    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5951)
    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:18788)
    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5951)
    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:18788)
    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5951)
    at android.widget.FrameLayout.onMeasure(FrameLayout.java:194)
    at android.view.View.measure(View.java:18788)
    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5951)
    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:18788)
    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5951)
    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:18788)
    at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2100)
    at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1216)
    at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1452)
    at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1107)
    at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6013)
    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:858)
    at android.view.Choreographer.doCallbacks(Choreographer.java:670)
    at android.view.Choreographer.doFrame(Choreographer.java:606)
    at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:844)
    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:5417)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.Zygot

这适用于API 26：

D/EGL_emulation: eglMakeCurrent: 0x9d2e70a0: ver 2 0 (tinfo 0xa8e8b510)
D/AndroidRuntime: Shutting down VM
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.racu.cardgame, PID: 4691
java.util.ConcurrentModificationException
    at java.util.ArrayList$SubList.size(ArrayList.java:1057)
    at com.example.racu.cardgame.adapters.cardgameListMiniAdapter.getItemCount(cardgameListMiniAdapter.java:68)
    at android.support.v7.widget.RecyclerView.dispatchLayoutStep1(RecyclerView.java:3603)
    at android.support.v7.widget.RecyclerView.onMeasure(RecyclerView.java:3103)
    at android.view.View.measure(View.java:21998)
    at android.support.v4.widget.NestedScrollView.measureChildWithMargins(NestedScrollView.java:1446)
    at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
    at android.support.v4.widget.NestedScrollView.onMeasure(NestedScrollView.java:512)
    at android.view.View.measure(View.java:21998)
    at android.support.constraint.ConstraintLayout.internalMeasureChildren(ConstraintLayout.java:934)
    at android.support.constraint.ConstraintLayout.onMeasure(ConstraintLayout.java:973)
    at android.view.View.measure(View.java:21998)
    at android.support.constraint.ConstraintLayout.internalMeasureChildren(ConstraintLayout.java:934)
    at android.support.constraint.ConstraintLayout.onMeasure(ConstraintLayout.java:973)
    at android.view.View.measure(View.java:21998)
    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6580)
    at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1514)
    at android.widget.LinearLayout.measureVertical(LinearLayout.java:806)
    at android.widget.LinearLayout.onMeasure(LinearLayout.java:685)
    at android.view.View.measure(View.java:21998)
    at android.support.v4.widget.DrawerLayout.onMeasure(DrawerLayout.java:1060)
    at android.view.View.measure(View.java:21998)
    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6580)
    at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
    at android.support.v7.widget.ContentFrameLayout.onMeasure(ContentFrameLayout.java:139)
    at android.view.View.measure(View.java:21998)
    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6580)
    at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1514)
    at android.widget.LinearLayout.measureVertical(LinearLayout.java:806)
    at android.widget.LinearLayout.onMeasure(LinearLayout.java:685)
    at android.view.View.measure(View.java:21998)
    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6580)
    at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
    at android.view.View.measure(View.java:21998)
    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6580)
    at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1514)
    at android.widget.LinearLayout.measureVertical(LinearLayout.java:806)
    at android.widget.LinearLayout.onMeasure(LinearLayout.java:685)
    at android.view.View.measure(View.java:21998)
    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6580)
    at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
    at com.android.internal.policy.DecorView.onMeasure(DecorView.java:721)
    at android.view.View.measure(View.java:21998)
    at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2410)
    at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1498)
    at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1751)
    at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1386)
    at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6733)
    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:911)
    at android.view.Choreographer.doCallbacks(Choreographer.java:723)
    at android.view.Choreographer.doFrame(Choreographer.java:658)
    at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:897)
    at android.os.Handler.handleCallback(Handler.java:789)
    at android.os.Handler.dispatchMessage(Handler.java:98)
    at android.os.Looper.loop(Looper.java:164)
    at android.app.ActivityThread.main(ActivityThread.java:6541)
    at java.lang.reflect.Method.invoke(Native Method)
08-14 18:50:44.793 4691-4691/com.example.racu.cardgame E/AndroidRuntime:     at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)

试图让它工作创建游戏。外部的一个for循环而不是SubList的子列表没有崩溃，但swapAdapter没有被调用，最奇怪的是，在我的手机中工作得很好，没有崩溃和预期的行为。

我真的非常喜欢一些亮点。 关心Ne0R @ Cu

3 个答案:

答案 0 :(得分：2)

此问题的根源是 List.subList（）不复制列表：

/ ** * 返回该列表中部分内容的视图 * fromIndex（含）和toIndex（不含）。 （如果 * fromIndex和toIndex相等，返回列表为 *空。）返回的列表由该列表支持，因此是非结构化的 ...

然后，当您在结果视图上调用 size（）时，将引发异常。我还没有研究为什么会发生这种情况，但是 size（）试图验证其当前大小，在这种情况下，整个列表和视图之间存在冲突。

因此，您可以通过简单地复制列表来解决此崩溃：

List<YOUR_TYPE> trimmed = new ArrayList<>( game.subList(0, maxIndex) );
adapter = new GameCardListMiniAdapter(this, trimmed);

答案 1 :(得分：0)

尝试

RecyclerView.LayoutManager layoutManager = new LinearLayoutManager(this);

而不是：

LinearLayoutManager linearLayoutManager = new LinearLayoutManager(ActivityHome.this);

然后做同样的事情

 rc.setHasFixedSize(false);//only use this for fixed ammount
            rc.setLayoutManager(layoutManager);
            rc.setAdapter(dataItemAdapter);

答案 2 :(得分：0)

我找不到任何问题的答案，最后我创建了HorizontalScrollView并将我的观点从代码添加到LinearLayout内的HorizontalScrollView。

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