添加的 View 将 RecyclerView 作为父级，但视图不是真正的子级

Posted 2023-04-19

【中文标题】添加的 View 将 RecyclerView 作为父级，但视图不是真正的子级

【英文标题】：Added View has RecyclerView as parent but view is not a real child

【发布时间】：2017-01-25 23:10:55

【问题描述】：

当 RecyclerView 的内容发生变化时，有时会出现问题。我有过滤 RecyclerView 数据的搜索视图。过滤后我打电话给notifyDataSetChanged();

我使用this 作为适配器。

我在想这个问题与添加页脚有关，但在删除页脚后问题仍然出现，但不是那么频繁

例外：

java.lang.IllegalStateException: Added View has RecyclerView as parent but view is not a real child. Unfiltered index:0
at android.support.v7.widget.RecyclerView$LayoutManager.addViewInt(RecyclerView.java:7048)
at android.support.v7.widget.RecyclerView$LayoutManager.addView(RecyclerView.java:7012)
at android.support.v7.widget.RecyclerView$LayoutManager.addView(RecyclerView.java:7000)
at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1428)
at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1377)
at android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:578)
at android.support.v7.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:3260)
at android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:3069)
at android.support.v7.widget.RecyclerView.onLayout(RecyclerView.java:3518)
at android.view.View.layout(View.java:16636)
at android.view.ViewGroup.layout(ViewGroup.java:5437)
at android.support.v4.widget.SwipeRefreshLayout.onLayout(SwipeRefreshLayout.java:598)
at android.view.View.layout(View.java:16636)
at android.view.ViewGroup.layout(ViewGroup.java:5437)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336)
at android.widget.FrameLayout.onLayout(FrameLayout.java:273)
at android.view.View.layout(View.java:16636)
at android.view.ViewGroup.layout(ViewGroup.java:5437)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336)
at android.widget.FrameLayout.onLayout(FrameLayout.java:273)
at android.view.View.layout(View.java:16636)
at android.view.ViewGroup.layout(ViewGroup.java:5437)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336)
at android.widget.FrameLayout.onLayout(FrameLayout.java:273)
at android.view.View.layout(View.java:16636)
at android.view.ViewGroup.layout(ViewGroup.java:5437)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336)
at android.widget.FrameLayout.onLayout(FrameLayout.java:273)
at android.view.View.layout(View.java:16636)
at android.view.ViewGroup.layout(ViewGroup.java:5437)
at android.support.v7.widget.ActionBarOverlayLayout.onLayout(ActionBarOverlayLayout.java:435)
at android.view.View.layout(View.java:16636)
at android.view.ViewGroup.layout(ViewGroup.java:5437)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336)
at android.widget.FrameLayout.onLayout(FrameLayout.java:273)
at android.view.View.layout(View.java:16636)
at android.view.ViewGroup.layout(ViewGroup.java:5437)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1743)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1586)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1495)
at android.view.View.layout(View.java:16636)
at android.view.ViewGroup.layout(ViewGroup.java:5437)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336)
at android.widget.FrameLayout.onLayout(FrameLayout.java:273)
at com.android.internal.policy.PhoneWindow$DecorView.onLayout(PhoneWindow.java:2678)
at android.view.View.layout(View.java:16636)
at android.view.ViewGroup.layout(ViewGroup.java:5437)
at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2171)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1931)
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(Nat

【问题讨论】：

得到了这个问题，你有没有机会解决这个问题？

【参考方案1】：

我遇到了同样的问题...我通过使用来自 parent.getContext() 的 Context 膨胀 ViewHolder 的 View 并指定 @987654325 来解决它@ 在对inflate 的调用中：

final override fun onCreateViewHolder(parent:ViewGroup,viewType:Int):RecyclerView.ViewHolder

    View view = LayoutInflater.from(parent.getContext())
        .inflate(R.layout.listitem,parent,false);
    return new RecyclerView.ViewHolder(view) ;

【参考方案2】：

我们实际上是通过编写自己的适配器来解决的：

public abstract class BaseRVAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> 

    static final int HEADER_VIEW_TYPE = Integer.MAX_VALUE;
    static final int FOOTER_VIEW_TYPE = Integer.MAX_VALUE - 1;

    private BaseRVAdapterHeaderImpl adapterHeader;

    private BaseRVAdapterFooterImpl adapterFooter;

    public void setFooterImpl(BaseRVAdapterFooterImpl footerImpl) 
        adapterFooter = footerImpl;
    

    public void setHeaderImpl(BaseRVAdapterHeaderImpl headerImpl) 
        adapterHeader = headerImpl;
    

    public abstract RecyclerView.ViewHolder onCreateContentItemViewHolder(ViewGroup parent, int viewType);

    public abstract void onBindContentItemViewHolder(RecyclerView.ViewHolder holder, int position);

    public abstract int getContentItemCount();

    public int getContentItemViewType(int position) 
        return 0;
    

    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) 
        if (viewType == HEADER_VIEW_TYPE) 
            return new HeaderViewHolder(adapterHeader.getHeaderView());
        

        if (viewType == FOOTER_VIEW_TYPE) 
            return new FooterViewHolder(adapterFooter.getFooterView());
        

        return onCreateContentItemViewHolder(parent, viewType);
    

    @Override
    public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) 
        if (holder instanceof HeaderViewHolder) 
            //bind header view holder
         else if (holder instanceof FooterViewHolder) 
            adapterFooter.onBind(holder.itemView);
         else 
            onBindContentItemViewHolder(holder, position - getHeaderItemCount());
        
    

    @Override
    public int getItemCount() 
        return getContentItemCount() + getHeaderItemCount() + getFooterItemCount();
    

    @Override
    public int getItemViewType(int position) 
        if (hasHeader() && position < getHeaderItemCount()) 
            return HEADER_VIEW_TYPE;
        

        if (position == getItemCount() - 1 && hasFooter()) 
            return FOOTER_VIEW_TYPE;
        

        return getContentItemViewType(position - getHeaderItemCount());
    

    public int getAdapterContentPosition(RecyclerView.ViewHolder holder) 
        return holder.getAdapterPosition() - getHeaderItemCount();
    

    public void notifyContentItemRangeInserted(int positionStart, int itemCount) 
        notifyItemRangeInserted(positionStart + getHeaderItemCount(), itemCount);
    

    public void notifyContentItemRangeRemoved(int positionStart, int itemCount) 
        notifyItemRangeRemoved(positionStart + getHeaderItemCount(), itemCount);
    

    public void notifyContentItemRemoved(int position) 
        notifyItemRemoved(position + getHeaderItemCount());
    

    public void notifyContentItemChanged(int position) 
        notifyItemChanged(position + getHeaderItemCount());
    

    public void notifyFooterItemChanged() 
        notifyItemChanged(getContentItemCount() + getFooterItemCount());
    

    public boolean hasHeader() 
        return adapterHeader != null;
    

    boolean hasFooter() 
        return adapterFooter != null;
    

    public int getHeaderItemCount() 
        return hasHeader() ? 1 : 0;
    

    public int getFooterItemCount() 
        return hasFooter() ? 1 : 0;
    

    public interface BaseRVAdapterHeaderImpl 
        View getHeaderView();
    

    public static abstract class BaseRVAdapterFooterImpl 
        public abstract View getFooterView();

        public void onBind(View view) 

        
    

    private class HeaderViewHolder extends RecyclerView.ViewHolder 
        HeaderViewHolder(View itemView) 
            super(itemView);
        
    

    private class FooterViewHolder extends RecyclerView.ViewHolder 
        FooterViewHolder(View itemView) 
            super(itemView);
        
    

    public RecyclerView.ItemDecoration getBottomItemDecoration() 
        int marginBottom = App.getContext().getResources().getDimensionPixelSize(R.dimen.dimen_small);

        return new RecyclerView.ItemDecoration() 
            @Override
            public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) 
                super.getItemOffsets(outRect, view, parent, state);

                int position = parent.getChildAdapterPosition(view);
                int contentItemCount = getContentItemCount();
                if (position == contentItemCount) 
                    outRect.bottom = marginBottom;
                
            
        ;