41.我的收藏

效果图：

1.我们将hotFragment中的商品详细信息的hotgoodsbean，传入到list<HotGoodsBean>  list中，然后再将这个list加入到MyfavitorActivity创建的一个hasmap中，这样就将我选择的商品成功的放入了缓存当中，然后在放入MyfavitorActivity中的recyclerview中。

2.点击删除adapter中的item，使用如下代码：

removebutton为删除按钮

holder.removeButton.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        list.remove(position);
        notifyItemRemoved(position);
        notifyItemRangeChanged(0,list.size());
    }
});

3.加入购物车，这里我们将每个点击的item将入到一个list<ShoppingCart>中，然后复制给HotFragment中的hasmap，实现在购物车中也能显示商品，代码如下：

package zuo.com.ui.adapter;

import android.content.Context;
import android.net.Uri;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.TextView;

import com.facebook.drawee.backends.pipeline.Fresco;
import com.facebook.drawee.backends.pipeline.PipelineDraweeController;
import com.facebook.drawee.view.SimpleDraweeView;
import com.facebook.imagepipeline.request.ImageRequest;
import com.facebook.imagepipeline.request.ImageRequestBuilder;

import java.util.ArrayList;
import java.util.List;

import zuo.com.ui.R;
import zuo.com.ui.bean.HotGoodsBean;
import zuo.com.ui.bean.ShoppingCart;
import zuo.com.ui.fragment.CartFragment;

/**
 * Created by Administrator on 2016/11/10.
 */
public class MyFavitorAdapter extends RecyclerView.Adapter<MyFavitorAdapter.ViewHolder> {
    private List<HotGoodsBean> list;
    private Context context;
    private LayoutInflater layoutInflater;
    public MyFavitorAdapter(List<HotGoodsBean> list, Context context){
        this.list=list;
        this.context=context;

    }
    @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        layoutInflater=LayoutInflater.from(parent.getContext());
        View view=layoutInflater.inflate(R.layout.item_my_favitor,parent,false);
        return new ViewHolder(view);
    }

    @Override
    public void onBindViewHolder(ViewHolder holder, final int position) {
        Uri uri=Uri.parse(list.get(position).getImgUrl());
        ImageRequest request = ImageRequestBuilder.newBuilderWithSource(uri)
                .setProgressiveRenderingEnabled(true)
                .build();
        PipelineDraweeController controller = (PipelineDraweeController) Fresco.newDraweeControllerBuilder()
                .setImageRequest(request)
                .build();
        holder.simpleDraweeView.setController(controller);
        holder.nameTextView.setText(list.get(position).getName());
        holder.priceTextView.setText(list.get(position).getPrice());
        holder.removeButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                list.remove(position);
                notifyItemRemoved(position);
                notifyItemRangeChanged(0,list.size());
            }
        });
        holder.addButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                List<ShoppingCart> s=new ArrayList<ShoppingCart>();
                s.add(new ShoppingCart(list.get(position).getId(),
                        list.get(position).getName(),
                        list.get(position).getImgUrl(),
                        list.get(position).getDescription(),
                        list.get(position).getPrice()));
                HotGoodsAdapter.hashMap.put("123",s);
                HotGoodsAdapter.hashMap.put("456",s);
                HotGoodsAdapter.hashMap.put("789",s);

            }
        });

    }

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



    class ViewHolder extends RecyclerView.ViewHolder{
        private SimpleDraweeView simpleDraweeView;
        private TextView nameTextView,priceTextView;
        private Button removeButton,addButton;

        public ViewHolder(View itemView) {
            super(itemView);
            simpleDraweeView= (SimpleDraweeView) itemView.findViewById(R.id.drawee_view);
            nameTextView= (TextView) itemView.findViewById(R.id.text_title);
            priceTextView= (TextView) itemView.findViewById(R.id.text_price);
            removeButton= (Button) itemView.findViewById(R.id.btn_remove);
            addButton= (Button) itemView.findViewById(R.id.btn_like);
        }

    }
}

4.至此功能全部实现