Android报错：java.lang.IllegalStateException: ViewHolder views must not be attached when created.

╰半夏微凉° 2022-05-18 22:12 153阅读 0赞

这个错误很奇怪，先记录下来，

错误信息如下，

E/AndroidRuntime: FATAL EXCEPTION: main  
Process: com.spacesoftwares.myapplication3, PID: 11575  
java.lang.IllegalStateException: ViewHolder views must not be attached when created. Ensure that you are not passing 'true' to the attachToRoot parameter of LayoutInflater.inflate(..., boolean attachToRoot)  
    at android.support.v7.widget.RecyclerView$Adapter.createViewHolder(RecyclerView.java:6687)  
    at android.support.v7.widget.RecyclerView$Recycler.tryGetViewHolderForPositionByDeadline(RecyclerView.java:5869)  
    at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5752)  
    at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5748)  
    at android.support.v7.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:2232)  
    at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1559)  
    at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1519)  
    at android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:614)  
    at android.support.v7.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:3812)  
    at android.support.v7.widget.RecyclerView.onMeasure(RecyclerView.java:3225)

解决方案在stackoverflow上面【1】，毕竟我的源码和人家源码不一样，我贴出来，全文如下，

package com.spacesoftwares.myapplication3.MyRecyclerView;
    
    import android.content.Context;
    import android.support.annotation.NonNull;
    import android.support.v7.widget.RecyclerView;
    import android.view.LayoutInflater;
    import android.view.View;
    import android.view.ViewGroup;
    import android.widget.TextView;
    
    import com.spacesoftwares.myapplication3.R;
    
    import org.w3c.dom.Text;
    
    import java.util.List;
    
    
    public class LinearAdaptor extends RecyclerView.Adapter<LinearAdaptor.LinearViewHolder> {
    
        private Context mContext;
    
        public LinearAdaptor(Context context){
            this.mContext = context;
        }
    
        @NonNull
        @Override
        public LinearAdaptor.LinearViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
            //return new LinearViewHolder(LayoutInflater.from(mContext).inflate(R.layout.layout_linear_item, parent));
            View view = LayoutInflater.from(mContext).inflate(R.layout.layout_linear_item, parent, false);
            return new LinearViewHolder(view);
        }
    
        @Override
        public void onBindViewHolder(@NonNull LinearAdaptor.LinearViewHolder holder, int position) {
            holder.textView.setText("LinearViewHolder");
        }
    
        @Override
        public int getItemCount() {
            return 20;
        }
    
        class LinearViewHolder extends  RecyclerView.ViewHolder{
            private TextView textView;
            public LinearViewHolder(View itemView){
                super(itemView);
                textView = itemView.findViewById(R.id.li_title);
            }
        }
    }

报错的部分在这里，

//return new LinearViewHolder(LayoutInflater.from(mContext).inflate(R.layout.layout\_linear\_item, parent));

我改写成下面的形式，就没有报错了，主要是inflate后面加了一个false，如下  
View view = LayoutInflater.from(mContext).inflate(R.layout.layout\_linear\_item, parent, false);  
return new LinearViewHolder(view);

【1】[https://stackoverflow.com/questions/50655791/a-difficulty-with-recyclerview-adapter-after-update-to-api-27][https_stackoverflow.com_questions_50655791_a-difficulty-with-recyclerview-adapter-after-update-to-api-27]

[https_stackoverflow.com_questions_50655791_a-difficulty-with-recyclerview-adapter-after-update-to-api-27]: https://stackoverflow.com/questions/50655791/a-difficulty-with-recyclerview-adapter-after-update-to-api-27