我们的QA检测到一个错误:当旋转Android设备(Droid Turbo)时,发生了以下recyclerview相关的崩溃:

java.lang.IndexOutOfBoundsException: 不一致。无效项位置2(偏移量:2).state:3

对我来说,它看起来像一个内部错误在RecyclerView,因为我不能想到这是由我们的代码直接引起的任何方式…

有人遇到过这个问题吗?

解决方案是什么?

一个残酷的解决方法可能是在异常发生时捕获异常并从头重新创建RecyclverView实例,以避免留下损坏的状态。

但是,如果可能的话,我希望更好地理解这个问题(也许从根源上解决它),而不是掩盖它。

这种细菌不容易繁殖,但一旦发生就会致命。

完整的堆栈跟踪:

W/dalvikvm( 7546): threadid=1: thread exiting with uncaught exception (group=0x41987d40)
    E/AndroidRuntime( 7546): FATAL EXCEPTION: main
    E/AndroidRuntime( 7546): Process: com.oblong.mezzedroid, PID: 7546
    E/AndroidRuntime( 7546): java.lang.IndexOutOfBoundsException: Inconsistency detected. Invalid item position 2(offset:2).state:3
    E/AndroidRuntime( 7546):    at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:3382)
    E/AndroidRuntime( 7546):    at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:3340)
    E/AndroidRuntime( 7546):    at android.support.v7.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:1810)
    E/AndroidRuntime( 7546):    at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1306)
    E/AndroidRuntime( 7546):    at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1269)
    E/AndroidRuntime( 7546):    at android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:523)
    E/AndroidRuntime( 7546):    at org.liboid.recycler_view.RecyclerViewContainer$LiLinearLayoutManager.onLayoutChildren(RecyclerViewContainer.java:179)
    E/AndroidRuntime( 7546):    at android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:1942)
    E/AndroidRuntime( 7546):    at android.support.v7.widget.RecyclerView.onLayout(RecyclerView.java:2237)
    E/AndroidRuntime( 7546):    at org.liboid.recycler_view.LiRecyclerView.onLayout(LiRecyclerView.java:30)
    E/AndroidRuntime( 7546):    at android.view.View.layout(View.java:14946)
    E/AndroidRuntime( 7546):    at android.view.ViewGroup.layout(ViewGroup.java:4651)
    E/AndroidRuntime( 7546):    at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453)
    E/AndroidRuntime( 7546):    at android.widget.FrameLayout.onLayout(FrameLayout.java:388)
    E/AndroidRuntime( 7546):    at android.view.View.layout(View.java:14946)
    E/AndroidRuntime( 7546):    at android.view.ViewGroup.layout(ViewGroup.java:4651)
    E/AndroidRuntime( 7546):    at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453)
    E/AndroidRuntime( 7546):    at android.widget.FrameLayout.onLayout(FrameLayout.java:388)
    E/AndroidRuntime( 7546):    at android.view.View.layout(View.java:14946)
    E/AndroidRuntime( 7546):    at android.view.ViewGroup.layout(ViewGroup.java:4651)
    E/AndroidRuntime( 7546):    at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1671)
    E/AndroidRuntime( 7546):    at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1525)
    E/AndroidRuntime( 7546):    at android.widget.LinearLayout.onLayout(LinearLayout.java:1434)
    E/AndroidRuntime( 7546):    at com.oblong.mezzedroid.workspace.content.bins.BinsContainerLayout.onLayout(BinsContainerLayout.java:22)
    E/AndroidRuntime( 7546):    at android.view.View.layout(View.java:14946)
    E/AndroidRuntime( 7546):    at android.view.ViewGroup.layout(ViewGroup.java:4651)
    E/AndroidRuntime( 7546):    at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1671)
    E/AndroidRuntime( 7546):    at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1525)
    E/AndroidRuntime( 7546):    at android.widget.LinearLayout.onLayout(LinearLayout.java:1434)
    E/AndroidRuntime( 7546):    at android.view.View.layout(View.java:14946)
    E/AndroidRuntime( 7546):    at android.view.ViewGroup.layout(ViewGroup.java:4651)
    E/AndroidRuntime( 7546):    at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453)
    E/AndroidRuntime( 7546):    at android.widget.FrameLayout.onLayout(FrameLayout.java:388)
    E/AndroidRuntime( 7546):    at android.view.View.layout(View.java:14946)
    E/AndroidRuntime( 7546):    at android.view.ViewGroup.layout(ViewGroup.java:4651)
    E/AndroidRuntime( 7546):    at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453)
    E/AndroidRuntime( 7546):    at android.widget.FrameLayout.onLayout(FrameLayout.java:388)
    E/AndroidRuntime( 7546):    at android.view.View.layout(View.java:14946)
    E/AndroidRuntime( 7546):    at android.view.ViewGroup.layout(ViewGroup.java:4651)
    E/AndroidRuntime( 7546):    at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1671)
    E/AndroidRuntime( 7546):    at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1525)
    E/AndroidRuntime( 7546):    at android.widget.LinearLayout.onLayout(LinearLayout.java:1434)
    E/AndroidRuntime( 7546):    at android.view.View.layout(View.java:14946)
    E/AndroidRuntime( 7546):    at android.view.ViewGroup.layout(ViewGroup.java:4651)
    E/AndroidRuntime( 7546):    at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453)
    E/AndroidRuntime( 7546):    at android.widget.FrameLayout.onLayout(FrameLayout.java:388)
    E/AndroidRuntime( 7546):    at android.view.View.layout(View.java:14946)
    E/AndroidRuntime( 7546):    at android.view.ViewGroup.layout(ViewGroup.java:4651)
    E/AndroidRuntime( 7546):    at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1671)
    E/AndroidRuntime( 7546):    at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1525)
    E/AndroidRuntime( 7546):    at android.widget.LinearLayout.onLayout(LinearLayout.java:1434)
    E/AndroidRuntime( 7546):    at android.view.View.layout(View.java:14946)
    E/AndroidRuntime( 7546):    at android.view.ViewGroup.layout(ViewGroup.java:4651)
    E/AndroidRuntime( 7546):    at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453)
    E/AndroidRuntime( 7546):    at android.widget.FrameLayout.onLayout(FrameLayout.java:388)
    E/AndroidRuntime( 7546):    at android.view.View.layout(View.java:14946)
    E/AndroidRuntime( 7546):    at android.view.ViewGroup.layout(ViewGroup.java:4651)
    E/AndroidRuntime( 7546):    at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2132)
    E/AndroidRuntime( 7546):    at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1872)
    E/AndroidRuntime( 7546):    at andro

当前回答

add_location.removeAllViews ();

            for (int i=0;i<arrayList.size();i++)
            {
                add_location.addView(new HolderDropoff(AddDropOffActivtity.this,add_location,arrayList,AddDropOffActivtity.this,this));
            }
            add_location.getAdapter().notifyDataSetChanged();

其他回答

我刚刚解决了同样的问题。我有一个RecyclerView。设置setHasStableIds(true)以避免项目闪烁的适配器。

我在getItemId()中使用了一个可复制的字段(我的模型没有id字段):

override fun getItemId(position: Int): Long {
    // Error-prone due to possibly duplicate name.
    return contacts[position].name.hashCode().toLong()
}

getItemId()应该为每个项目返回一个唯一的id,所以解决方案是这样做:

override fun getItemId(position: Int): Long {
    // Contact's phone is unique, so I use it instead.
    return contacts[position].phone.hashCode().toLong()
}

我解决了这个问题,当它得到新数据时,一个接一个地添加项目。我在适配器内部使用这个函数。

public void add(Data item) {
        if(!params.contains(item){
           params.add(item);
           notifyItemInserted(getItemCount() - 1);
        }
    }
}

当你尝试清除你的列表时,这个问题可能会发生,如果你要清除你的数据列表,特别是当你使用拉刷新尝试使用一个布尔标志,初始化它为假,在OnRefresh方法使它为真,清除你的dataList如果标志为真之前添加新的数据到它,之后使它为假。

您的代码可能是这样的

 private boolean pullToRefreshFlag = false ;
 private ArrayList<your object> dataList ;
 private Adapter adapter ;

 public class myClass extend Fragment implements SwipeRefreshLayout.OnRefreshListener{

 private void requestUpdateList() {

     if (pullToRefresh) {
        dataList.clear
        pullToRefreshFlag = false;
     }

     dataList.addAll(your data);
     adapter.notifyDataSetChanged;


 @Override
 OnRefresh() {
 PullToRefreshFlag = true
 reqUpdateList() ; 
 }

}

在我的例子中,我在一个非ui线程中更新项目并调用notifyDataSetChanged。大多数时候它是有效的,但当大量变化迅速发生时,它就会崩溃。当我这样做的时候,基本上

activity.runOnUiThread(new Runnable() {
    @Override
    public void run() {
        changeData();
        notifyDataSetChanged();
    }
});

然后它停止了崩溃。

这是一个相当讨厌的虫子。

为了处理我的项目点击,我使用了RecyclerView的实现。OnItemTouchListener类似于在这个问题中找到的解决方案。

After many times of refreshing the RecyclerView's datasource and clicking an item, this IndexOutOfBoundsException would crash my application. When an item is clicked, the RecyclerView internally goes looking for the correct underlying view and gives back it position. Checking out the source code, I saw that there were some Tasks and Threads scheduled. To cut the story short, basically it's just some illegal state where two datasources are intermixed and not synchronized and the whole thing goes wild.

基于此,我删除了RecyclerView的实现。OnItemTouchListener,并简单地捕捉到适配器自己的ViewHolder上的点击:

public void onBindViewHolder (final BaseContentView holder, final int position) {

    holder.itemView.setOnClickListener(new OnClickListener() {

      @Override
      public void onClick (View view) {

        // do whatever you like here
      }
    });

}

这可能不是最好的解决方案,但目前没有崩溃。希望这将节省你一些时间:)。