java - 在recyclerview中设置onclicklistener

Question

我的适配器类:

public class Adaptor extends RecyclerView.Adapter<Adaptor.Holder>{

private ArrayList<Winkel> winkels;
private LayoutInflater inflater;
private ImageView icon;
private ItemCLickCallback itemCLickCallback;

public interface ItemCLickCallback {
    void onItemClick(int p);
    void onSecItemClick(int p);

}

public void setItemCLickCallback(final ItemCLickCallback itemCLickCallback1){
    ;this.itemCLickCallback = itemCLickCallback;
}

public Adaptor (ArrayList<Winkel> winkels,Context c){
    this.inflater = LayoutInflater.from(c);
    this.winkels = winkels;
}


@Override
public Holder onCreateViewHolder(ViewGroup parent, int viewType) {
    View view = inflater.inflate(R.layout.list_item,parent,false);
    return new Holder(view);
}

@Override
public void onBindViewHolder(Holder holder, int position) {
    Winkel winkel = winkels.get(position);
    holder.title.setText(winkel.getNaam());
    if (winkel.isFavourtite()){
        holder.icon.setImageResource(R.drawable.ic_star_black_18dp);
    }
    else{
        holder.icon.setImageResource(R.drawable.ic_star_border_black_18dp);
    }

}

@Override
public int getItemCount() {

    return winkels.size();
}

class Holder extends RecyclerView.ViewHolder implements View.OnClickListener{

    private TextView title;
    private View container;
    private ImageView icon;

    public Holder(View itemView) {
        super(itemView);

        title = (TextView)itemView.findViewById(R.id.lbl_item_text);
        container = itemView.findViewById(R.id.cont_item_root);
        icon = (ImageView) itemView.findViewById(R.id.im_item_icon_secondary);
        icon.setOnClickListener(this);
        container.setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        if(v.getId()==R.id.cont_item_root){
            itemCLickCallback.onItemClick(getAdapterPosition());

        }
        else{
            itemCLickCallback.onSecItemClick(getAdapterPosition());
        }
    }
}
}


    @Override
    public void onClick(View v) {

    }
}
}

实现它的代码(我的问题在adaptor.setItemClickCallback(context)

@Override
protected void onPostExecute(Void aVoid) {
    super.onPostExecute(aVoid);
    Adaptor adaptor = new Adaptor(winkels,context);
    recyclerview.setLayoutManager(new LinearLayoutManager(context));
    recyclerview.addItemDecoration(new VerticalSpace(30));
    recyclerview.setAdapter(adaptor);
    adaptor.setItemCLickCallback(context);

}

从 fragment 概述中调用:

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.fragment_overview, container, false);
    mRecyclerView = (RecyclerView) view.findViewById(R.id.recycle);
    ODKortrijkWebservice webs = new ODKortrijkWebservice(this.getActivity(),mRecyclerView);
    webs.execute();
    return view;
 }

如何设置 ItemCLickCallback(this) 的上下文？它应该是上下文(至少我认为是这样？)，因为这是从 fragment 传递的内容，但我似乎不知道如何让它工作，所以一些帮助将不胜感激。基本上我想为我的 recyclerview 中的每个项目添加 onclicklisteners，并且 recyclerview 是通过使用来自 Web 服务的数据创建的，因此为什么从我从 Web 服务获取数据的类调用适配器类，该类在我的分段。谢谢。

Answer 1

我建议您按照以下方式制作ODKortrijkWebservice.Callback。

在您的 ODKortrijkWebservice 中:

public class ODKortrijkWebservice extends AsyncTask<...> {

    private Callback mCallback;

    public interface Callback {
        void onSuccess(ArrayList<Winkel> winkels);
    }

    public ODKortrijkWebservice(Context context, Callback callback) {
        ...
        mCallback = callback;
        ...
    }

    @Override
    protected void onPostExecute(Void aVoid) {
        ...
        mCallback.onSuccess(winkels);
    }
}

在您的 fragment 中:

public class YourFragment extends Fragment implements ODKortrijkWebservice.Callback, Adaptor.ItemCLickCallback {

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragment_overview, container, false);
        mRecyclerView = (RecyclerView) view.findViewById(R.id.recycle);
        ODKortrijkWebservice webs = new ODKortrijkWebservice(this.getActivity(), this);
        webs.execute();

        return view;
    }

    @Override
    public void onSuccess(ArrayList<Winkel> winkels) {
        Adaptor adaptor = new Adaptor(winkels, getContext());
        mRecyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
        mRecyclerView.addItemDecoration(new VerticalSpace(30));
        mRecyclerView.setAdapter(adaptor);
        adaptor.setItemCLickCallback(this);
    }

    @Override
    public void onItemClick(int p) {

    }

    @Override
    public void onSecItemClick(int p) {

    }
}