java–RecyclerView不调用onCreateViewHolder或onBindView

没有得到任何错误,所有数据似乎都有效.出于某种原因,正在调用与视图相关的方法.我确定了以下内容：

> getItemCount()是唯一被调用的适配器方法,并返回一个正整数值,(我知道这将是你们要看的区域)

>正在调用构造函数,成员变量有效.
>父视图是一个垂直的LinearLayout;没有滚动视图,或任何其他具有自己的滚动属性的视图.
>创建包含片段视图并在屏幕上显示.

这是片段中的声明,后跟适配器.任何帮助将不胜感激,因为这是完全困惑的.

SubMenuAdapter adapter = new SubMenuAdapter(getActivity(), mContentItems);
recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
recyclerView.setItemAnimator(new DefaultItemAnimator());
recyclerView.setAdapter(adapter);


public class SubMenuAdapter extends RecyclerView.Adapter {
private static final String TAG = String.format("==> %S", SubMenuAdapter.class.getSimpleName());
private final List mContentItems;
private Context mContext;
public SubMenuAdapter(Context context, List contenItems) {
Log.d(TAG, "Constructor called");
mCOntentItems= contenItems;
mCOntext= context;
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
Log.d(TAG, "onCreateViewHolder called");
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.row_resource_efficiency, parent, false);
return new ViewHolder(view);
}
@Override
public void onBindViewHolder(ViewHolder holder, int position) {
Log.d(TAG, "onBindViewHolder called");
ContentItem item = mContentItems.get(position);
holder.textName.setText(item.getName());
FontSetter.setMyriadProRegular(mContext, holder.textName);
Picasso.with(mContext).load("file://" + item.getPreviewImageDefault()).into(holder.imageIcon);
}
@Override
public int getItemCount() {
Log.d(mContext, String.format("getItemCount: %d", mContentItems.size()));
return mContentItems.size();
}
// ViewHolder
public static class ViewHolder extends RecyclerView.ViewHolder {
TextView textName;
ImageView imageIcon;
public ViewHolder(View view) {
super(view);
textName = (TextView) view.findViewById(R.id.tv_resource_efficiency_option);
imageIcon = (ImageView) view.findViewById(R.id.iv_resource_efficiency_icon);
}
}


解决方法:

这也可以帮助某人

首次使用

recyclerView.setAdapter(adapter);


接着：

recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));


所以它看起来像这样：

recyclerView.setAdapter(adapter);
recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));


订单相反