recycleview购物车

1.mainactivity

public class MainActivity extends Activity implements IView {

private String mUrl=\"http://www.wanandroid.com/tools/mockapi/6523/restaurant-list\";
private RecyclerView mLeftRecy;
private RecyclerView mRightRecy;
private ArrayList<MyData.DataBean> mList=new ArrayList<>();
private ArrayList<MyData.DataBean.SpusBean> mRightList=new ArrayList<>();
private LinearLayoutManager manager;
private LeftAdapter mLeftAdapter;
private PresenterImpl presenter;
private RightAdapter mRightAdapter;
private LinearLayoutManager manager1;

@Override
protected int getLayout() {
    return R.layout.activity_main;
}

@Override
protected void initView() {
    mLeftRecy = findViewById(R.id.Left_Recy);
    mRightRecy = findViewById(R.id.Right_Recy);

    //左边的适配器
    mLeftAdapter = new LeftAdapter(mList,this);
    mLeftRecy.setAdapter(mLeftAdapter);
    //左边管理类
    manager = new LinearLayoutManager(this);
    mLeftRecy.setLayoutManager(manager);

    //右边的适配器
    mRightAdapter = new RightAdapter(mRightList,this);
    mRightRecy.setAdapter(mRightAdapter);
    //右边管理类
    manager1 = new LinearLayoutManager(this);
    mRightRecy.setLayoutManager(manager1);

    mLeftAdapter.set Listener(new LeftAdapter.ItemClick() {
        @Override
        public void set (View view, int position) {
            Toast.makeText(MainActivity.this,mList.get(position).getName(), Toast.LENGTH_SHORT).show();
            //点击切换 先清除集合
            mRightList.clear();
            mRightList.addAll(mList.get(position).getSpus());
            mRightAdapter.notifyDataSetChanged();
        }
    });
}

@Override
protected void set () {

}

@Override
protected void progressLogic() {
    presenter = new PresenterImpl(this);
    presenter.startRequest(mUrl,null);
}

@Override
public void success(  data) {
    MyData myData= (MyData) data;
    mList.addAll(myData.getData());
    mLeftAdapter.notifyDataSetChanged();
    
	//进去就展示
    mRightList.addAll(mList.get(0).getSpus());
    mRightAdapter.notifyDataSetChanged();

}

@Override
public void error(  error) {

}

}

2.主布局
<RelativeLayout ns:android=“http://schemas.android.com/apk/res/android”

 ns:app=\"http://schemas.android.com/apk/res-auto\"
 ns:tools=\"http://schemas.android.com/tools\"
android:layout_width=\"match_parent\"
android:layout_height=\"match_parent\"
tools:context=\".MainActivity\">

<LinearLayout
    android:layout_width=\"match_parent\"
    android:layout_height=\"wrap_content\"
    android:orientation=\"horizontal\">
    <android.support.v7.widget.RecyclerView
        android:id=\"@+id/Left_Recy\"
        android:layout_width=\"0dp\"
        android:layout_weight=\"2\"
        android:layout_height=\"match_parent\"></android.support.v7.widget.RecyclerView>
    <android.support.v7.widget.RecyclerView
        android:id=\"@+id/Right_Recy\"
        android:layout_width=\"0dp\"
        android:layout_weight=\"6\"
        android:layout_height=\"match_parent\"></android.support.v7.widget.RecyclerView>
</LinearLayout>

/RelativeLayout>

3.leftAdapter
public class LeftAdapter extends RecyclerView.Adapter<LeftAdapter.ViewHolder> implements View. Listener {

private ArrayList<MyData.DataBean> mList;
private Context mContext;

public LeftAdapter(ArrayList<MyData.DataBean> mList, Context mContext) {
    this.mList = mList;
    this.mContext = mContext;
}

@NonNull
@Override
public ViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
    View view = View.inflate(mContext, R.layout.left_item, null);
    ViewHolder holder = new ViewHolder(view);
    view.set Listener(this);
    return holder;
}

@Override
public void onBindViewHolder(@NonNull ViewHolder viewHolder, int i) {
    viewHolder.tv.setText(mList.get(i).getName());
    viewHolder.itemView.setTag(i);
}

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



public class ViewHolder extends RecyclerView.ViewHolder {
    private TextView tv;

    public ViewHolder(@NonNull View itemView) {
        super(itemView);
        tv = itemView.findViewById(R.id.Left_Text);
    }
}

//接口回调
public interface ItemClick {
    void set (View view, int position);
}

private ItemClick mItemClick;

public void set Listener(ItemClick itemClick) {
    this.mItemClick = itemClick;
}

@Override
public void  (View v) {
    if(mItemClick!=null){
        mItemClick.set (v,(int)v.getTag());
    }
}

}

4.rightAdapter
public class RightAdapter extends RecyclerView.Adapter<RightAdapter.ViewHolder> {

private ArrayList<MyData.DataBean.SpusBean> mList;
private Context mContext;

public RightAdapter(ArrayList<MyData.DataBean.SpusBean> mList, Context mContext) {
    this.mList = mList;
    this.mContext = mContext;
}

@NonNull
@Override
public ViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
    View view = View.inflate(mContext, R.layout.right_item, null);
    ViewHolder holder=new ViewHolder(view);
    return holder;
}

@Override
public void onBindViewHolder(@NonNull ViewHolder viewHolder, int i) {
    viewHolder.name.setText(mList.get(i).getName()+\"\");
    viewHolder.price.setText(mList.get(i).getSkus().get(0).getPrice());
    Glide.with(mContext).load(mList.get(i).getPic_url()).into(viewHolder.img);
}

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

public class ViewHolder extends RecyclerView.ViewHolder {
    private ImageView img;
    private TextView name;
    private TextView price;
    public ViewHolder(@NonNull View itemView) {
        super(itemView);
        img=itemView.findViewById(R.id.Right_Image);
        name=itemView.findViewById(R.id.Right_ );
        price=itemView.findViewById(R.id.Right_Price);
    }
}

}

左边布局

<LinearLayout ns:android=“http://schemas.android.com/apk/res/android”

android:orientation=\"vertical\"
android:layout_width=\"match_parent\"
android:layout_height=\"match_parent\">
<TextView
    android:id=\"@+id/Left_Text\"
    android:text=\"哈哈哈\"
    android:layout_width=\"match_parent\"
    android:layout_height=\"wrap_content\" />

/LinearLayout>

右边 布局
<LinearLayout ns:android=“http://schemas.android.com/apk/res/android”

android:layout_width=\"match_parent\"
android:layout_height=\"120dp\"
android:gravity=\"center_vertical\"
android:orientation=\"horizontal\">

<ImageView

    android:id=\"@+id/Right_Image\"
    android:layout_width=\"80dp\"
    android:layout_height=\"80dp\" />

<LinearLayout
    android:layout_width=\"wrap_content\"
    android:layout_height=\"wrap_content\"
    android:layout_weight=\"1\"
    android:orientation=\"vertical\">

    <TextView
        android:id=\"@+id/Right_ \"
        android:layout_width=\"wrap_content\"
        android:layout_height=\"wrap_content\"
        android:text=\"哈哈哈\" />

    <TextView
        android:id=\"@+id/Right_Price\"
        android:layout_width=\"wrap_content\"
        android:layout_height=\"wrap_content\"
        android:layout_marginTop=\"10dp\"
        android:text=\"哈哈哈\" />
</LinearLayout>

<com.bawei.wangyaxiao.yuekaomoni2.weight.JiaJianView

    android:id=\"@+id/JiaJian_View\"
    android:layout_width=\"wrap_content\"
    android:layout_height=\"wrap_content\"></com.bawei.wangyaxiao.yuekaomoni2.weight.JiaJianView>