Question

我的应用程序中有一个RecyclerView一切正常我正在滚动时最后一项可见我正在向底部添加更多项目并且工作正常。现在问题是我有一个Handler每隔5秒运行一次并检查Web服务是否有任何更新，如果有任何更新我只是将数据加载到{{1的顶部我没有滚动RecyclerView但是当我滚动它并调用RecyclerView（因为它是每5秒调用一次）然后更新Handler时它工作正常应用程序顶部崩溃。

顶部更新功能：

RecyclerView

这是错误日志：

public void addOnTop(ArrayList<ItemPOJO> topItemList) {
    for (int i = topItemList.size() - 1; i >= 0; i--) {
        itemList.add(0, topItemList.get(i));
    }
    notifyItemRangeInserted(0, topItemList.size());
    notifyDataSetChanged();
}

使用

P。：java.lang.IndexOutOfBoundsException: Inconsistency detected. Invalid view holder adapter positionViewHolder{419b8760 position=5 id=-1, oldPos=-1, pLpos:-1 no parent} at android.support.v7.widget.RecyclerView$Recycler.validateViewHolderForOffsetPosition(RecyclerView.java:4214) at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:4345) at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:4326) at android.support.v7.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:1955) at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1364) at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1327) at android.support.v7.widget.LinearLayoutManager.scrollBy(LinearLayoutManager.java:1155) at android.support.v7.widget.LinearLayoutManager.scrollVerticallyBy(LinearLayoutManager.java:1012) at android.support.v7.widget.RecyclerView.scrollByInternal(RecyclerView.java:1363) at android.support.v7.widget.RecyclerView.onTouchEvent(RecyclerView.java:2227) at android.view.View.dispatchTouchEvent(View.java:7190) at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2274) at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2009) at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2280) at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2023) at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2280) at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2023) at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2280) at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2023) at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2280) at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2023) at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2280) at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2023) at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2280) at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2023) at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2280) at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2023) at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1931) at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1385) at android.app.Activity.dispatchTouchEvent(Activity.java:2396) at android.support.v7.internal.view.WindowCallbackWrapper.dispatchTouchEvent(WindowCallbackWrapper.java:59) at android.support.v7.internal.view.WindowCallbackWrapper.dispatchTouchEvent(WindowCallbackWrapper.java:59) at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1879) at android.view.View.dispatchPointerEvent(View.java:7370) at android.view.ViewRootImpl.deliverPointerEvent(ViewRootImpl.java:3182) at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:3127) at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:4164) at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:4143) at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:4235) at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:171) at android.view.InputEventReceiver.nativeConsumeBatchedInputEvents(Native Method) at android.view.InputEventReceiver.consumeBatchedInputEvents(InputEventReceiver.java:163) at android.view.ViewRootImpl.doConsumeBatchedInput(ViewRootImpl.java:4214) at android.view.ViewRootImpl$ConsumeBatchedInputRunnable.run(ViewRootImpl.java:4254) at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725) at android.view.Choreographer.doCallbacks(Choreographer.java:555) at android.view.Choreographer.doFrame(Choreographer.java:523) at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreog

Answer 1

此崩溃可能是由于在更新列表（由适配器使用）时调用setViewHolder和onBind方法，但notifyDataSetChanged()没有＆＃39被叫了。如果您在更新列表时滚动列表或fling，通常会发生这种情况。

解决方案：维护ItemPOJO的单独列表（tempList）并在该列表中附加topData。然后清除用于适配器的列表，使用tempList设置适配器列表，并调用notifyDataSetChanged()。

Answer 2

这是RV的错误，请参阅discussion here 在大多数情况下，使用notifyDataSetChanged()将避免此崩溃，但它会杀死动画和性能。

Answer 3

更改您的代码：

public void addOnTop(ArrayList<ItemPOJO> topItemList) {
    Collections.reverse(topItemList);
    itemList.addAll(0, topItemList);
    notifyItemRangeInserted(0, topItemList.size());
}

这很奇怪，但这样我解决了我的问题！

Answer 4

尝试在刷新时禁用recyclerview：

recyclerView.setOnTouchListener(new View.OnTouchListener() {
      @Override
      public boolean onTouch(View v, MotionEvent event) {
          return true;
      }
  });

Answer 5

试试这个：

 notifyItemRangeInserted(0, topItemList.size()-1);

在顶部

5 个答案: