Question

我使用RecyclerView显示包含Image和TextView作为rawitem的数据。

我的适配器类如下：

public class MyAdapter extends RecyclerView.Adapter<MyAdapter.RecyclerViewHolders> {

private List<MyModel> itemList;
private Context context;

private DisplayImageOptions displayImageOptions;

public MyAdapter(Activity context, List<MyModel> itemList) {
    this.itemList = itemList;
    this.context = context;
}

@Override
public RecyclerViewHolders onCreateViewHolder(ViewGroup parent, int viewType) {
    View layoutView = LayoutInflater.from(parent.getContext()).inflate(R.layout.singleview_grid_location, null);
    RecyclerViewHolders rcv = new RecyclerViewHolders(layoutView);
    return rcv;
}

@Override
public void onBindViewHolder(final RecyclerViewHolders holder, final int position) {
    holder.rl_main.setTag(position);
    final MyModel mainModel = itemList.get((int) holder.rl_main.getTag());
    if (mainModel.is_selected()) {
        holder.rl_main.setBackgroundResource(R.drawable.border_theme);
        holder.iv_selection.setVisibility(View.VISIBLE);
    } else {
        holder.rl_main.setBackgroundColor(Color.parseColor("#FFFFFF"));
        holder.iv_selection.setVisibility(View.GONE);
    }

    holder.txt_location_name.setText(mainModel.getLocationName());
    if (mainModel.getImagePath() != null && !mainModel.getImagePath().equals("")) {
        Constant.getImageLoader().displayImage(mainModel.getImagePath(),
                holder.iv_location_photo, Constant.getInstanceImageOptions(R.mipmap.popup_placeholder), new SimpleImageLoadingListener() {
                    @Override
                    public void onLoadingStarted(String imageUri, View view2) {
                    }

                    @Override
                    public void onLoadingFailed(String imageUri, View view2, FailReason failReason) {
                        holder.iv_location_photo.setImageResource(R.mipmap.popup_placeholder);
                    }

                    @Override
                    public void onLoadingComplete(String imageUri, View view2, Bitmap loadedImage) {
                    }
                });
    }
    holder.itemView.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            if (mainModel.is_selected()) {
                mainModel.setIs_selected(false);
            } else {
                mainModel.setIs_selected(true);
            }
            itemList.set(position, mainModel);
            notifyDataSetChanged();
        }
    });
}

@Override
public int getItemCount() {
    return this.itemList.size();
}

public class RecyclerViewHolders extends RecyclerView.ViewHolder {
    public TextView txt_location_name;
    public ImageView iv_location_photo;
    public CardView card_view;
    public ImageView iv_selection;
    public RelativeLayout rl_main;

    public RecyclerViewHolders(View itemView) {
        super(itemView);
        txt_location_name = (TextView) itemView.findViewById(R.id.txt_location_name);
        iv_location_photo = (ImageView) itemView.findViewById(R.id.iv_location_photo);
        card_view = (CardView) itemView.findViewById(R.id.card_view);
        iv_selection = (ImageView) itemView.findViewById(R.id.iv_selection);
        rl_main = (RelativeLayout) itemView.findViewById(R.id.rl_main);
    }
}
}

问题在于，当我点击Recyclerview的视图时，图像发生了变化。 Ya，textview和我的选择保持不变并且工作准确。问题是图像被更改为视图。

可能是什么问题？请结账。感谢。

Answer 1

这样做有什么意义？

holder.rl_main.setTag(position);
final MyModel mainModel = itemList.get((int) holder.rl_main.getTag());

您需要从onBindView为您提供的位置参数本身获取List位置。接下来你应该在Class上编写onClickListener而不是在onBindView.Bad实践中实现，并且可能会产生一些问题。覆盖方法。 “getItemViewType（int position）”。修改模型后。您应该根据需要和getAdapterPosition提供的提供位置来执行添加/删除/更改/插入的通知项目。

在recyclerview适配器点击中更改了图像

1 个答案: