recyvlerView The specified child already has a parent. You must call removeView() on the child's...

adapter 错误的代码

 @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int position) {
        View view = LayoutInflater.from(mActivity).inflate(R.layout.item_recommend_model,parent);
        ViewHolder viewHolder = new ViewHolder(view);
        return viewHolder;
    }

adapter正确的代码

@Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int position) {
        View view = LayoutInflater.from(mActivity).inflate(R.layout.item_recommend_model,parent,false);
        ViewHolder viewHolder = new ViewHolder(view);
        return viewHolder;
    }

解释：

  View view = LayoutInflater.from(mActivity).inflate(R.layout.item_recommend_model,parent);

当我们翻开inflate源码来看

public View inflate(@LayoutRes int resource, @Nullable ViewGroup root) {
        return inflate(resource, root, root != null);
    }

  // We are supposed to attach all the views we found (int temp)
                    // to root. Do that now.
   if (root != null && attachToRoot) {
         root.addView(temp, params);
    }

1、此时我们的root不是null，底层默认的将attachToRoot设置为true，当attachToRoot的值为true的时候，表示我们将R.layout.item_recommend_model添加到root容器中，如果此时另外一个RecyclerView，也执行了同样的步骤R.layout.item_recommend_model又添加到了另外一个root容器里面此时就会发生崩溃。

2、当我们root不是null且我们将attachToRoot设置为false的时候，表示我们不将resource添加到root中，但是root会协助resource设置布局的参数