mvp实现Xrecyclerview的上下拉和购物车功能（仿饿了么）
2024-06-30 05:42:03
首先先导入咱们的依赖
implementation 'com.android.support:design:28.0.0'implementation 'com.google.code.gson:gson:2.8.5'implementation 'cn.bingoogolapple:bga-qrcode-zxing:1.2.5'implementation 'com.squareup.okhttp3:okhttp:3.12.0'implementation 'com.jcodecraeer:xrecyclerview:1.5.9'implementation 'com.github.bumptech.glide:glide:4.8.0'implementation 'com.android.support:recyclerview-v7:28.0.0'implementation 'com.youth.banner:banner:1.4.10'implementation 'com.squareup.okhttp3:logging-interceptor:3.12.0'其次就是我们要用到的权限
<uses-permission android:name="com.dingtao.week3.permission.JPUSH_MESSAGE"/><uses-permission android:name="android.permission.RECEIVE_USER_PRESENT"/><uses-permission android:name="android.permission.INTERNET"/><uses-permission android:name="android.permission.READ_PHONE_STATE"/><uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/><uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/><uses-permission android:name="android.permission.WRITE_SETTINGS"/><uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/><uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/><uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>然后就开始写 我们的主页面了
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"tools:context=".MainActivity"><RelativeLayoutandroid:layout_width="match_parent"android:layout_height="50dp"android:focusable="true"android:focusableInTouchMode="true"><ImageViewandroid:id="@+id/btn_back"android:layout_width="50dp"android:layout_height="50dp"android:layout_alignParentLeft="true"android:padding="15dp"android:src="@drawable/btn_back" /><ImageViewandroid:id="@+id/btn_layout"android:layout_width="50dp"android:layout_height="50dp"android:layout_alignParentRight="true"android:padding="15dp"android:src="@drawable/even_city_draw" /><EditTextandroid:id="@+id/edit_keywords"android:layout_width="match_parent"android:layout_height="36dp"android:layout_centerVertical="true"android:layout_marginRight="5dp"android:layout_toLeftOf="@+id/btn_layout"android:layout_toRightOf="@+id/btn_back"android:background="@drawable/search_edit_bg"android:hint="搜索"android:paddingLeft="40dp"android:singleLine="true"android:text="手机"android:textColor="@color/custom_gray"android:textColorHint="@color/grayblack"android:textSize="16sp" /><ImageViewandroid:id="@+id/btn_search"android:layout_width="30dp"android:layout_height="30dp"android:layout_alignLeft="@+id/edit_keywords"android:layout_centerVertical="true"android:layout_marginLeft="10dp"android:src="@android:drawable/ic_search_category_default" /><ImageViewandroid:layout_width="30dp"android:layout_height="30dp"android:layout_alignRight="@+id/edit_keywords"android:layout_centerVertical="true"android:layout_marginRight="10dp"android:src="@drawable/person_list_sound_up" /></RelativeLayout><ImageViewandroid:layout_width="match_parent"android:layout_height="1dp"android:src="@android:color/darker_gray" /><LinearLayoutandroid:layout_width="match_parent"android:layout_height="50dp"android:orientation="horizontal"><TextViewandroid:id="@+id/cate_text1"android:layout_width="match_parent"android:layout_height="match_parent"android:layout_weight="1"android:gravity="center"android:text="综合▲"android:textColor="@color/set_font_color"android:textSize="14sp"></TextView><TextViewandroid:id="@+id/cate_text2"android:layout_width="match_parent"android:layout_height="match_parent"android:layout_weight="1"android:gravity="center"android:text="价格▲"android:textColor="@color/set_font_color"android:textSize="14sp"></TextView><TextViewandroid:id="@+id/cate_text3"android:layout_width="match_parent"android:layout_height="match_parent"android:layout_weight="1"android:gravity="center"android:text="销量▲"android:textColor="@color/set_font_color"android:textSize="14sp"></TextView><TextViewandroid:id="@+id/cate_text4"android:layout_width="match_parent"android:layout_height="match_parent"android:layout_weight="1"android:gravity="center"android:text="筛选▲"android:textColor="@color/set_font_color"android:textSize="14sp"></TextView></LinearLayout><ImageViewandroid:layout_width="match_parent"android:layout_height="1dp"android:src="@android:color/darker_gray" /><RelativeLayoutandroid:layout_width="match_parent"android:layout_height="match_parent"><com.jcodecraeer.xrecyclerview.XRecyclerViewandroid:id="@+id/list_goods"android:layout_alignParentLeft="true"android:layout_alignParentTop="true"android:layout_width="match_parent"android:layout_height="match_parent"></com.jcodecraeer.xrecyclerview.XRecyclerView><ImageViewandroid:id="@+id/shop_car"android:layout_width="40dp"android:layout_height="40dp"android:layout_alignParentRight="true"android:layout_alignParentBottom="true"android:layout_margin="50dp"android:src="@drawable/gouwuc_r"/></RelativeLayout>
</LinearLayout>布局中有自己写的shap还有自己的照片文件记得导入带drawable-xhdpi下
而xml文件则直接 导入到drawable文件下
先写bean类
public class Goods implements Serializable {// "bargainPrice": 111.99,
// "createtime": "2017-10-14T21:39:05",
// "detailUrl": "https:\/\/item.m.jd.com\/product\/4719303.html?utm_source=androidapp&utm_medium=appshare&utm_campaign=t_335139774&utm_term=QQfriends",
// "images": "https:\/\/m.360buyimg.com\/n0\/jfs\/t9004\/210\/1160833155\/647627\/ad6be059\/59b4f4e1N9a2b1532.jpg!q70.jpg|https:\/\/m.360buyimg.com\/n0\/jfs\/t7504\/338\/63721388\/491286\/f5957f53\/598e95f1N7f2adb87.jpg!q70.jpg|https:\/\/m.360buyimg.com\/n0\/jfs\/t7441\/10\/64242474\/419246\/adb30a7d\/598e95fbNd989ba0a.jpg!q70.jpg",
// "itemtype": 1,
// "pid": 1,
// "price": 118.0,
// "pscid": 1,
// "salenum": 0,
// "sellerid": 17,
// "subhead": "每个中秋都不能简单，无论身在何处，你总需要一块饼让生活更圆满，京东月饼让爱更圆满京东自营，闪电配送，更多惊喜，快用手指戳一下",
// "title": "北京稻香村 稻香村中秋节月饼 老北京月饼礼盒655g"private double bargainPrice;private String createtime;private String detailUrl;private String images;private int num;private int pid;private double price;private int pscid;private int selected;private int sellerid;private String subhead;private String title;private int count=1;public void setCount(int count) {this.count = count;}public int getCount() {return count;}public double getBargainPrice() {return bargainPrice;}public void setBargainPrice(double bargainPrice) {this.bargainPrice = bargainPrice;}public String getCreatetime() {return createtime;}public void setCreatetime(String createtime) {this.createtime = createtime;}public String getDetailUrl() {return detailUrl;}public void setDetailUrl(String detailUrl) {this.detailUrl = detailUrl;}public String getImages() {return images;}public void setImages(String images) {this.images = images;}public int getNum() {return num;}public void setNum(int num) {this.num = num;}public int getPid() {return pid;}public void setPid(int pid) {this.pid = pid;}public double getPrice() {return price;}public void setPrice(double price) {this.price = price;}public int getPscid() {return pscid;}public void setPscid(int pscid) {this.pscid = pscid;}public int getSelected() {return selected;}public void setSelected(int selected) {this.selected = selected;}public int getSellerid() {return sellerid;}public void setSellerid(int sellerid) {this.sellerid = sellerid;}public String getSubhead() {return subhead;}public void setSubhead(String subhead) {this.subhead = subhead;}public String getTitle() {return title;}public void setTitle(String title) {this.title = title;}
}public class Result<T> {int code;String msg;T data;public int getCode() {return code;}public void setCode(int code) {this.code = code;}public String getMsg() {return msg;}public void setMsg(String msg) {this.msg = msg;}public T getData() {return data;}public void setData(T data) {this.data = data;}
}public class Shop {List<Goods> list;String sellerName;String sellerid;int textColor = 0xffffffff;int background = R.color.grayblack;boolean check;public void setTextColor(int textColor) {this.textColor = textColor;}public int getTextColor() {return textColor;}public void setBackground(int background) {this.background = background;}public int getBackground() {return background;}public void setCheck(boolean check) {this.check = check;}public boolean isCheck() {return check;}public List<Goods> getList() {return list;}public void setList(List<Goods> list) {this.list = list;}public String getSellerName() {return sellerName;}public void setSellerName(String sellerName) {this.sellerName = sellerName;}public String getSellerid() {return sellerid;}public void setSellerid(String sellerid) {this.sellerid = sellerid;}
}core类
public interface DataCall<T> {void success(T data);void fail(Result result);}
public abstract class BasePresenter {DataCall dataCall;public BasePresenter(DataCall dataCall){this.dataCall = dataCall;}Handler mHandler = new Handler(Looper.getMainLooper()) {@Overridepublic void handleMessage(Message msg) {Result result = (Result) msg.obj;if (result.getCode()==0){dataCall.success(result.getData());}else{dataCall.fail(result);}}};public void requestData(final Object...args){new Thread(new Runnable() {@Overridepublic void run() {Message message = mHandler.obtainMessage();message.obj = getData(args);mHandler.sendMessage(message);}}).start();}protected abstract Result getData(Object...args);public void unBindCall(){this.dataCall = null;}}public class DTApplication extends Application {private static DTApplication instance;private SharedPreferences mSharedPreferences;@Overridepublic void onCreate() {super.onCreate();instance = this;mSharedPreferences = getSharedPreferences("application",Context.MODE_PRIVATE);}public static DTApplication getInstance() {return instance;}public SharedPreferences getShare() {return mSharedPreferences;}}
//写完之后记得配置清单文件util层
public class HttpUtils {public static String get(String urlString){OkHttpClient okHttpClient = new OkHttpClient();Request request = new Request.Builder().url(urlString).get().build();try {Response response = okHttpClient.newCall(request).execute();String result = response.body().string();Log.i("dt","请求结果："+result);return result;} catch (IOException e) {e.printStackTrace();}return "";}public static String postForm(String url,String[] name,String[] value){OkHttpClient okHttpClient = new OkHttpClient();FormBody.Builder formBuild = new FormBody.Builder();for (int i = 0; i < name.length; i++) {formBuild.add(name[i],value[i]);}Request request = new Request.Builder().url(url).post(formBuild.build()).build();try {Response response = okHttpClient.newCall(request).execute();String result = response.body().string();Log.i("dt",result);return result;} catch (IOException e) {e.printStackTrace();}return "";}public static String postFile(String url,String[] name,String[] value,String fileParamName,File file){OkHttpClient okHttpClient = new OkHttpClient();MultipartBody.Builder requestBody = new MultipartBody.Builder().setType(MultipartBody.FORM);if(file != null){// MediaType.parse() 里面是上传的文件类型。RequestBody body = RequestBody.create(MediaType.parse("image/*"), file);String filename = file.getName();// 参数分别为: 文件参数名 ，文件名称 ， RequestBodyrequestBody.addFormDataPart(fileParamName, "jpg", body);}if (name!=null) {for (int i = 0; i < name.length; i++) {requestBody.addFormDataPart(name[i], value[i]);}}Request request = new Request.Builder().url(url).post(requestBody.build()).build();try {Response response = okHttpClient.newCall(request).execute();if (response.code()==200) {return response.body().string();}} catch (IOException e) {e.printStackTrace();}return "";}public static String postJson(String url,String jsonString){OkHttpClient okHttpClient = new OkHttpClient();RequestBody requestBody = RequestBody.create(MediaType.parse("application/json"),jsonString);Request request = new Request.Builder().url(url).post(requestBody).build();try {Response response = okHttpClient.newCall(request).execute();return response.body().string();} catch (IOException e) {e.printStackTrace();}return "";}
}public class GlideImageLoader extends ImageLoader {@Overridepublic void displayImage(Context context, Object path, ImageView imageView) {/**注意：1.图片加载器由自己选择，这里不限制，只是提供几种使用方法2.返回的图片路径为Object类型，由于不能确定你到底使用的那种图片加载器，传输的到的是什么格式，那么这种就使用Object接收和返回，你只需要强转成你传输的类型就行，切记不要胡乱强转！*///Glide 加载图片简单用法Glide.with(context).load(path).into(imageView);//Picasso 加载图片简单用法
// Picasso.with(context).load(path).into(imageView);//用fresco加载图片简单用法，记得要写下面的createImageView方法
// Uri uri = Uri.parse((String) path);
// imageView.setImageURI(uri);}//提供createImageView 方法，如果不用可以不重写这个方法，主要是方便自定义ImageView的创建
// @Override
// public ImageView createImageView(Context context) {
// //使用fresco，需要创建它提供的ImageView，当然你也可以用自己自定义的具有图片加载功能的ImageView
// SimpleDraweeView simpleDraweeView=new SimpleDraweeView(context);
// return simpleDraweeView;
// }
}这个是设置图片的东西
然后设置日志
public class SpacingItemDecoration extends RecyclerView.ItemDecoration {private int spacing;public SpacingItemDecoration(int spacing) {this.spacing = spacing;}@Overridepublic void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {outRect.top = spacing / 2;outRect.bottom = spacing / 2;outRect.left = spacing / 2;outRect.right = spacing / 2;}
}写的自定义view
public class AddSubLayout extends LinearLayout implements View.OnClickListener {private TextView mAddBtn,mSubBtn;private TextView mNumText;private AddSubListener addSubListener;public AddSubLayout(Context context) {super(context);initView();}public AddSubLayout(Context context, AttributeSet attrs) {super(context, attrs);initView();}public AddSubLayout(Context context, AttributeSet attrs, int defStyleAttr) {super(context, attrs, defStyleAttr);initView();}@SuppressLint("NewApi")public AddSubLayout(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {super(context, attrs, defStyleAttr, defStyleRes);initView();}private void initView(){//加载layout布局，第三个参数ViewGroup一定写成thisView view = View.inflate(getContext(),R.layout.car_add_sub_layout,this);mAddBtn = view.findViewById(R.id.btn_add);mSubBtn = view.findViewById(R.id.btn_sub);mNumText = view.findViewById(R.id.text_number);mAddBtn.setOnClickListener(this);mSubBtn.setOnClickListener(this);}@Overrideprotected void onLayout(boolean changed, int l, int t, int r, int b) {super.onLayout(changed, l, t, r, b);int width = r-l;//getWidth();int height = b-t;//getHeight();}@Overridepublic void onClick(View v) {int number = Integer.parseInt(mNumText.getText().toString());switch (v.getId()){case R.id.btn_add:number++;mNumText.setText(number+"");break;case R.id.btn_sub:if (number==0){Toast.makeText(getContext(),"数量不能小于0",Toast.LENGTH_LONG).show();return;}number--;mNumText.setText(number+"");break;}if (addSubListener!=null){addSubListener.addSub(number);}}public void setCount(int count) {mNumText.setText(count+"");}public void setAddSubListener(AddSubListener addSubListener) {this.addSubListener = addSubListener;}public interface AddSubListener{void addSub(int count);}
}model层
public class GoodsListModel {public static Result goodsList(String keywords, final String page) {String resultString = HttpUtils.postForm("http://www.zhaoapi.cn/product/searchProducts",new String[]{"keywords", "page"}, new String[]{keywords, page});try {Gson gson = new Gson();Type type = new TypeToken<Result<List<Goods>>>() {}.getType();Result result = gson.fromJson(resultString, type);
// Result<List<Goods>> result = new Result<>();
// result.setCode(0);
// List<Goods> list = new ArrayList<>();
// for (int i = 0; i < 30; i++) {
// Goods goods = new Goods();
// goods.setImages("");
// goods.setTitle("手机"+i);
// list.add(goods);
// }
// result.setData(list);return result;} catch (Exception e) {}Result result = new Result();result.setCode(-1);result.setMsg("数据解析异常");return result;}}
presenter层
public class GoodsListPresenter extends BasePresenter {private int page=1;private boolean isRefresh=true;public GoodsListPresenter(DataCall dataCall) {super(dataCall);}@Overrideprotected Result getData(Object... args) {isRefresh = (boolean) args[0];//是否需要刷新if (isRefresh){//刷新page = 1;}else{page++;}Result result = GoodsListModel.goodsList((String)args[1],page+"");//调用网络请求获取数据return result;}public boolean isResresh(){return isRefresh;}
}给主页面的xrecycleview设置适配器
public class GoodsListAdapter extends RecyclerView.Adapter<GoodsListAdapter.GoodsHodler> {private List<Goods> mList = new ArrayList<>();//数据集合private Context context;public final static int LINEAR_TYPE = 0;//线性public final static int GRID_TYPE = 1;//网格private int viewType = LINEAR_TYPE;private OnItemClickListener onItemClickListener;private OnItemLongClickListener onItemLongClickListener;public GoodsListAdapter(Context context) {this.context = context;}@Overridepublic int getItemViewType(int position) {return viewType;}//设置item的视图类型public void setViewType(int viewType) {this.viewType = viewType;}@NonNull@Overridepublic GoodsHodler onCreateViewHolder(@NonNull ViewGroup viewGroup, int viewType) {View view = null;if (viewType == LINEAR_TYPE) {//通过第二个参数viewType判断选用的视图view = View.inflate(viewGroup.getContext(), R.layout.goods_linear_item, null);//加载item布局} else {view = View.inflate(viewGroup.getContext(), R.layout.goods_grid_item, null);//加载item布局}GoodsHodler goodsHodler = new GoodsHodler(view);return goodsHodler;}@Overridepublic void onBindViewHolder(@NonNull final GoodsHodler goodsHodler, final int position) {final Goods goods = mList.get(position);//拿到商品，开始赋值goodsHodler.itemView.setTag(mList.get(position));//增加点击事件goodsHodler.itemView.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {//*******跳转webActivity进行网页访问
// Intent intent = new Intent(context,WebActivity.class);
// intent.putExtra("url",goods.getDetailUrl());
// context.startActivity(intent);//————————跳转自定义的详情页面Intent intent = new Intent(context,GoodsDetailActivity.class);Bundle bundle = new Bundle();//使用bundle传递引用数据类型的对象bundle.putSerializable("goods",goods);intent.putExtras(bundle);//一定要把值放入了。context.startActivity(intent);// if (onItemClickListener!=null) {
// onItemClickListener.onItemClick(goods);
// }}});goodsHodler.itemView.setOnLongClickListener(new View.OnLongClickListener() {@Overridepublic boolean onLongClick(View v) {//*****************方案1*************
// ObjectAnimator objectAnimator = ObjectAnimator.ofFloat(
// goodsHodler.itemView,"alpha",1,0
// );
// objectAnimator.setDuration(1000);
// objectAnimator.setInterpolator(new LinearInterpolator());
// objectAnimator.addListener(new Animator.AnimatorListener() {
// @Override
// public void onAnimationStart(Animator animation) {
//
// }
//
// @Override
// public void onAnimationEnd(Animator animation) {
// mList.remove(position);//动画执行结束，移除
// notifyDataSetChanged();//刷新列表
// goodsHodler.itemView.setAlpha(1);//由于复用机制，需要重新改成不透明
// }
//
// @Override
// public void onAnimationCancel(Animator animation) {
// mList.remove(position);//动画执行结束，移除
// notifyDataSetChanged();//刷新列表
// goodsHodler.itemView.setAlpha(1);//由于复用机制，需要重新改成不透明
// }
//
// @Override
// public void onAnimationRepeat(Animator animation) {
//
// }
// });
// objectAnimator.start();//***********方案二**************if (onItemLongClickListener!=null) {onItemLongClickListener.onItemLongClick(position);}return true;}});goodsHodler.text.setText(goods.getTitle());//由于我们的数据图片提供的不标准，所以我们需要切割得到图片String imageurl = "https" + goods.getImages().split("https")[1];Log.i("dt", "imageUrl: " + imageurl);imageurl = imageurl.substring(0, imageurl.lastIndexOf(".jpg") + ".jpg".length());Glide.with(context).load(imageurl).into(goodsHodler.imageView);//加载图片}public static void main(String[] args) {String aa = "a111a222a333a";String[] b = aa.split("a");System.out.println(b[0]);}@Overridepublic int getItemCount() {return mList.size();}/*** 添加集合数据*/public void addAll(List<Goods> data) {if (data != null) {mList.addAll(data);}}/*** 清空数据*/public void clearList() {mList.clear();}/*** 设置点击方法*/public void setOnItemClickListener(OnItemClickListener onItemClickListener) {this.onItemClickListener = onItemClickListener;}public void remove(int position) {mList.remove(position);}public class GoodsHodler extends RecyclerView.ViewHolder {TextView text;ImageView imageView;public GoodsHodler(@NonNull View itemView) {super(itemView);text = itemView.findViewById(R.id.text);imageView = itemView.findViewById(R.id.image);}}/*** @author dingtao* @date 2018/12/15 10:28 AM* 点击接口*/public interface OnItemClickListener {void onItemClick(Goods goods);}/*** @author dingtao* @date 2018/12/15 10:28 AM* 点击接口*/public interface OnItemLongClickListener {void onItemLongClick(int position);}public void setOnItemLongClickListener(OnItemLongClickListener onItemLongClickListener) {this.onItemLongClickListener = onItemLongClickListener;}
}列表条目布局
<LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"><ImageViewandroid:id="@+id/image"android:layout_width="match_parent"android:layout_height="wrap_content"android:adjustViewBounds="true"android:minHeight="50dp"android:src="@mipmap/ic_launcher"/><TextViewandroid:id="@+id/text"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="aa"android:padding="10dp"/></LinearLayout><LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="horizontal"><ImageViewandroid:id="@+id/image"android:layout_margin="10dp"android:layout_width="100dp"android:layout_height="wrap_content"android:adjustViewBounds="true"android:minHeight="50dp"android:src="@mipmap/ic_launcher"/><TextViewandroid:id="@+id/text"android:layout_width="match_parent"android:layout_height="wrap_content"android:text="aa"android:padding="10dp"/></LinearLayout>完成
设置点击条目进入详情页面
详情页布局
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:orientation="vertical" android:layout_width="match_parent"android:layout_height="match_parent"><ScrollViewandroid:layout_width="match_parent"android:layout_height="match_parent"android:layout_weight="1"><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="vertical"><com.youth.banner.Bannerandroid:id="@+id/goods_banner"android:layout_width="match_parent"android:layout_height="200dp" /></LinearLayout></ScrollView><RelativeLayoutandroid:layout_width="match_parent"android:layout_height="50dp"><Buttonandroid:id="@+id/goods_add_cart_btn"android:layout_width="100dp"android:layout_height="50dp"android:background="@color/mark_red"android:textColor="@color/white"android:layout_alignParentRight="true"android:text="加入购物车"/></RelativeLayout>
</LinearLayout>详情页功能实现
public class GoodsDetailActivity extends AppCompatActivity implements View.OnClickListener {private Goods mGoods;//商品详情@Overrideprotected void onCreate(@Nullable Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_goods_details);Bundle bundle = getIntent().getExtras();mGoods = (Goods) bundle.getSerializable("goods");//读取列表传递过来的商品数据initBanner();findViewById(R.id.goods_add_cart_btn).setOnClickListener(this);}/*** 初始化banner*/private void initBanner() {List<String> imageList = new ArrayList<>();//图片url集合String[] imageurls = mGoods.getImages().split("https");//对图片进行切割for (int i = 0; i < imageurls.length; i++) {if (!TextUtils.isEmpty(imageurls[i])) {String url = "https" + imageurls[i];Log.i("dt", "imageUrl: " + url);url = url.substring(0, url.lastIndexOf(".jpg") + ".jpg".length());imageList.add(url);//图片路径拼接完成，重新赋值给数组}}Banner banner = findViewById(R.id.goods_banner);//设置图片加载器banner.setImageLoader(new GlideImageLoader());//设置banner样式banner.setBannerStyle(BannerConfig.NUM_INDICATOR);//设置图片集合banner.setImages(imageList);//设置标题集合（当banner样式有显示title时）
// banner.setBannerTitles(titleList);//设置banner动画效果banner.setBannerAnimation(Transformer.DepthPage);//设置自动轮播，默认为truebanner.isAutoPlay(false);//设置轮播时间
// banner.setDelayTime(1500);//设置指示器位置（当banner模式中有指示器时）banner.setIndicatorGravity(BannerConfig.RIGHT);//banner设置方法全部调用完毕时最后调用banner.start();}@Overridepublic void onClick(View v) {if (v.getId()==R.id.goods_add_cart_btn){Toast.makeText(this,"加入购物车",Toast.LENGTH_LONG).show();}}
}
点击购物车进入购物车页面
购物车页面的布局
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"><LinearLayoutandroid:layout_width="match_parent"android:layout_height="match_parent"android:layout_weight="1"android:orientation="horizontal"><android.support.v7.widget.RecyclerViewandroid:id="@+id/left_recycler"android:layout_width="100dp"android:layout_height="match_parent"android:background="@color/grayblack"></android.support.v7.widget.RecyclerView><android.support.v7.widget.RecyclerViewandroid:id="@+id/right_recycler"android:layout_width="match_parent"android:layout_height="match_parent"></android.support.v7.widget.RecyclerView></LinearLayout><RelativeLayoutandroid:layout_width="match_parent"android:layout_height="80dp"><ImageViewandroid:id="@+id/shop_car_image"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_centerVertical="true"android:layout_marginLeft="10dp"android:src="@drawable/gouwuc_r" /><TextViewandroid:id="@+id/goods_sum_price"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignParentRight="true"android:text="价格："android:layout_marginLeft="20dp"android:layout_centerVertical="true"/><TextViewandroid:id="@+id/goods_number"android:layout_width="30dp"android:layout_height="30dp"android:textSize="10sp"android:gravity="center"android:textColor="@color/white"android:layout_marginLeft="-10dp"android:background="@drawable/circle_red_bg"android:layout_alignParentTop="true"android:layout_toEndOf="@+id/shop_car_image"android:text="7"tools:ignore="RtlCompat" /></RelativeLayout>
</LinearLayout>model层
public class CartModel {public static Result goodsList() {
// String resultString = HttpUtils.get("http://www.zhaoapi.cn/product/getCarts?uid=71");String resultString = "{\"msg\":\"请求成功\",\"code\":\"0\",\"data\":[{\"list\":[],\"sellerName\":\"\",\"sellerid\":\"0\"},{\"list\":[{\"bargainPrice\":111.99,\"createtime\":\"2017-10-14T21:48:08\",\"detailUrl\":\"https:\\/\\/item.m.jd.com\\/product\\/4719303.html?utm_source=androidapp&utm_medium=appshare&utm_campaign=t_335139774&utm_term=QQfriends\",\"images\":\"https:\\/\\/m.360buyimg.com\\/n0\\/jfs\\/t9004\\/210\\/1160833155\\/647627\\/ad6be059\\/59b4f4e1N9a2b1532.jpg!q70.jpg|https:\\/\\/m.360buyimg.com\\/n0\\/jfs\\/t7504\\/338\\/63721388\\/491286\\/f5957f53\\/598e95f1N7f2adb87.jpg!q70.jpg|https:\\/\\/m.360buyimg.com\\/n0\\/jfs\\/t7441\\/10\\/64242474\\/419246\\/adb30a7d\\/598e95fbNd989ba0a.jpg!q70.jpg\",\"num\":11,\"pid\":11,\"price\":8989.0,\"pscid\":1,\"selected\":0,\"sellerid\":4,\"subhead\":\"每个中秋都不能简单，无论身在何处，你总需要一块饼让生活更圆满，京东月饼让爱更圆满京东自营，闪电配送，更多惊喜，快用手指戳一下\",\"title\":\"北京稻香村 稻香村中秋节月饼 老北京月饼礼盒655g\"}],\"sellerName\":\"商家4\",\"sellerid\":\"4\"},{\"list\":[{\"bargainPrice\":111.99,\"createtime\":\"2017-10-03T23:43:53\",\"detailUrl\":\"https:\\/\\/item.m.jd.com\\/product\\/4719303.html?utm_source=androidapp&utm_medium=appshare&utm_campaign=t_335139774&utm_term=QQfriends\",\"images\":\"https:\\/\\/m.360buyimg.com\\/n0\\/jfs\\/t9004\\/210\\/1160833155\\/647627\\/ad6be059\\/59b4f4e1N9a2b1532.jpg!q70.jpg|https:\\/\\/m.360buyimg.com\\/n0\\/jfs\\/t7504\\/338\\/63721388\\/491286\\/f5957f53\\/598e95f1N7f2adb87.jpg!q70.jpg|https:\\/\\/m.360buyimg.com\\/n0\\/jfs\\/t7441\\/10\\/64242474\\/419246\\/adb30a7d\\/598e95fbNd989ba0a.jpg!q70.jpg\",\"num\":1,\"pid\":13,\"price\":465.0,\"pscid\":1,\"selected\":0,\"sellerid\":6,\"subhead\":\"每个中秋都不能简单，无论身在何处，你总需要一块饼让生活更圆满，京东月饼让爱更圆满京东自营，闪电配送，更多惊喜，快用手指戳一下\",\"title\":\"北京稻香村 稻香村中秋节月饼 老北京月饼礼盒655g\"}],\"sellerName\":\"商家6\",\"sellerid\":\"6\"},{\"list\":[{\"bargainPrice\":11800.0,\"createtime\":\"2017-10-14T21:38:26\",\"detailUrl\":\"https:\\/\\/mitem.jd.hk\\/ware\\/view.action?wareId=1988853309&cachekey=1acb07a701ece8d2434a6ae7fa6870a1\",\"images\":\"https:\\/\\/m.360buyimg.com\\/n0\\/jfs\\/t6130\\/97\\/1370670410\\/180682\\/1109582a\\/593276b1Nd81fe723.jpg!q70.jpg|https:\\/\\/m.360buyimg.com\\/n0\\/jfs\\/t5698\\/110\\/2617517836\\/202970\\/c9388feb\\/593276b7Nbd94ef1f.jpg!q70.jpg|https:\\/\\/m.360buyimg.com\\/n0\\/jfs\\/t5698\\/110\\/2617517836\\/202970\\/c9388feb\\/593276b7Nbd94ef1f.jpg!q70.jpg|https:\\/\\/m.360buyimg.com\\/n0\\/jfs\\/t5815\\/178\\/2614671118\\/51656\\/7f52d137\\/593276c7N107b725a.jpg!q70.jpg|https:\\/\\/m.360buyimg.com\\/n0\\/jfs\\/t5878\\/60\\/2557817477\\/30873\\/4502b606\\/593276caN5a7d6357.jpg!q70.jpg\",\"num\":3,\"pid\":63,\"price\":10000.0,\"pscid\":40,\"selected\":0,\"sellerid\":7,\"subhead\":\"购买电脑办公部分商品满1元返火车票5元优惠券（返完即止）\",\"title\":\"全球购 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33\\/32(175\\/84A)\"},{\"bargainPrice\":3455.0,\"createtime\":\"2017-10-03T23:53:28\",\"detailUrl\":\"https:\\/\\/item.m.jd.com\\/product\\/12224420750.html?utm_source=androidapp&utm_medium=appshare&utm_campaign=t_335139774&utm_term=QQfriends\",\"images\":\"https:\\/\\/m.360buyimg.com\\/n0\\/jfs\\/t9106\\/106\\/1785172479\\/537280\\/253bc0ab\\/59bf78a7N057e5ff7.jpg!q70.jpg|https:\\/\\/m.360buyimg.com\\/n0\\/jfs\\/t9106\\/106\\/1785172479\\/537280\\/253bc0ab\\/59bf78a7N057e5ff7.jpg!q70.jpg|https:\\/\\/m.360buyimg.com\\/n0\\/jfs\\/t8461\\/5\\/1492479653\\/68388\\/7255e013\\/59ba5e84N91091843.jpg!q70.jpg|https:\\/\\/m.360buyimg.com\\/n0\\/jfs\\/t8461\\/5\\/1492479653\\/68388\\/7255e013\\/59ba5e84N91091843.jpg!q70.jpg|https:\\/\\/m.360buyimg.com\\/n0\\/jfs\\/t8803\\/356\\/1478945529\\/489755\\/2a163ace\\/59ba5e84N7bb9a666.jpg!q70.jpg\",\"num\":2,\"pid\":52,\"price\":666.0,\"pscid\":39,\"selected\":0,\"sellerid\":8,\"subhead\":\"【现货新品抢购】全面屏2.0震撼来袭，骁龙835处理器，四曲面陶瓷机\",\"title\":\"小米（MI） 小米MIX2 手机 黑色 全网通 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老北京月饼礼盒655g\"}],\"sellerName\":\"商家9\",\"sellerid\":\"9\"},{\"list\":[{\"bargainPrice\":11800.0,\"createtime\":\"2017-10-14T21:38:26\",\"detailUrl\":\"https:\\/\\/mitem.jd.hk\\/ware\\/view.action?wareId=1988853309&cachekey=1acb07a701ece8d2434a6ae7fa6870a1\",\"images\":\"https:\\/\\/m.360buyimg.com\\/n0\\/jfs\\/t6130\\/97\\/1370670410\\/180682\\/1109582a\\/593276b1Nd81fe723.jpg!q70.jpg|https:\\/\\/m.360buyimg.com\\/n0\\/jfs\\/t5698\\/110\\/2617517836\\/202970\\/c9388feb\\/593276b7Nbd94ef1f.jpg!q70.jpg|https:\\/\\/m.360buyimg.com\\/n0\\/jfs\\/t5698\\/110\\/2617517836\\/202970\\/c9388feb\\/593276b7Nbd94ef1f.jpg!q70.jpg|https:\\/\\/m.360buyimg.com\\/n0\\/jfs\\/t5815\\/178\\/2614671118\\/51656\\/7f52d137\\/593276c7N107b725a.jpg!q70.jpg|https:\\/\\/m.360buyimg.com\\/n0\\/jfs\\/t5878\\/60\\/2557817477\\/30873\\/4502b606\\/593276caN5a7d6357.jpg!q70.jpg\",\"num\":3,\"pid\":66,\"price\":13000.0,\"pscid\":40,\"selected\":0,\"sellerid\":10,\"subhead\":\"购买电脑办公部分商品满1元返火车票5元优惠券（返完即止）\",\"title\":\"全球购 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XL\"},{\"bargainPrice\":22.9,\"createtime\":\"2017-10-14T21:38:26\",\"detailUrl\":\"https:\\/\\/item.m.jd.com\\/product\\/2542855.html?utm_source=androidapp&utm_medium=appshare&utm_campaign=t_335139774&utm_term=QQfriends\",\"images\":\"https:\\/\\/m.360buyimg.com\\/n0\\/jfs\\/t1930\\/284\\/2865629620\\/390243\\/e3ade9c4\\/56f0a08fNbd3a1235.jpg!q70.jpg|https:\\/\\/m.360buyimg.com\\/n0\\/jfs\\/t2137\\/336\\/2802996626\\/155915\\/e5e90d7a\\/56f0a09cN33e01bd0.jpg!q70.jpg|https:\\/\\/m.360buyimg.com\\/n0\\/jfs\\/t1882\\/31\\/2772215910\\/389956\\/c8dbf370\\/56f0a0a2Na0c86ea6.jpg!q70.jpg|https:\\/\\/m.360buyimg.com\\/n0\\/jfs\\/t2620\\/166\\/2703833710\\/312660\\/531aa913\\/57709035N33857877.jpg!q70.jpg\",\"num\":5,\"pid\":34,\"price\":9.0,\"pscid\":2,\"selected\":0,\"sellerid\":11,\"subhead\":\"三只松鼠零食特惠，专区满99减50，满199减100，火速抢购》\",\"title\":\"三只松鼠 坚果炒货 零食奶油味 碧根果225g\\/袋\"},{\"bargainPrice\":111.99,\"createtime\":\"2017-10-14T21:48:08\",\"detailUrl\":\"https:\\/\\/item.m.jd.com\\/product\\/4719303.html?utm_source=androidapp&utm_medium=appshare&utm_campaign=t_335139774&utm_term=QQfriends\",\"images\":\"https:\\/\\/m.360buyimg.com\\/n0\\/jfs\\/t9004\\/210\\/1160833155\\/647627\\/ad6be059\\/59b4f4e1N9a2b1532.jpg!q70.jpg|https:\\/\\/m.360buyimg.com\\/n0\\/jfs\\/t7504\\/338\\/63721388\\/491286\\/f5957f53\\/598e95f1N7f2adb87.jpg!q70.jpg|https:\\/\\/m.360buyimg.com\\/n0\\/jfs\\/t7441\\/10\\/64242474\\/419246\\/adb30a7d\\/598e95fbNd989ba0a.jpg!q70.jpg\",\"num\":2,\"pid\":18,\"price\":399.0,\"pscid\":1,\"selected\":0,\"sellerid\":11,\"subhead\":\"每个中秋都不能简单，无论身在何处，你总需要一块饼让生活更圆满，京东月饼让爱更圆满京东自营，闪电配送，更多惊喜，快用手指戳一下\",\"title\":\"北京稻香村 稻香村中秋节月饼 老北京月饼礼盒655g\"}],\"sellerName\":\"商家11\",\"sellerid\":\"11\"},{\"list\":[{\"bargainPrice\":111.99,\"createtime\":\"2017-10-14T21:39:05\",\"detailUrl\":\"https:\\/\\/item.m.jd.com\\/product\\/4719303.html?utm_source=androidapp&utm_medium=appshare&utm_campaign=t_335139774&utm_term=QQfriends\",\"images\":\"https:\\/\\/m.360buyimg.com\\/n0\\/jfs\\/t9004\\/210\\/1160833155\\/647627\\/ad6be059\\/59b4f4e1N9a2b1532.jpg!q70.jpg|https:\\/\\/m.360buyimg.com\\/n0\\/jfs\\/t7504\\/338\\/63721388\\/491286\\/f5957f53\\/598e95f1N7f2adb87.jpg!q70.jpg|https:\\/\\/m.360buyimg.com\\/n0\\/jfs\\/t7441\\/10\\/64242474\\/419246\\/adb30a7d\\/598e95fbNd989ba0a.jpg!q70.jpg\",\"num\":3,\"pid\":19,\"price\":499.0,\"pscid\":1,\"selected\":0,\"sellerid\":12,\"subhead\":\"每个中秋都不能简单，无论身在何处，你总需要一块饼让生活更圆满，京东月饼让爱更圆满京东自营，闪电配送，更多惊喜，快用手指戳一下\",\"title\":\"北京稻香村 稻香村中秋节月饼 老北京月饼礼盒655g\"}],\"sellerName\":\"商家12\",\"sellerid\":\"12\"},{\"list\":[{\"bargainPrice\":111.99,\"createtime\":\"2017-10-14T21:39:05\",\"detailUrl\":\"https:\\/\\/item.m.jd.com\\/product\\/4719303.html?utm_source=androidapp&utm_medium=appshare&utm_campaign=t_335139774&utm_term=QQfriends\",\"images\":\"https:\\/\\/m.360buyimg.com\\/n0\\/jfs\\/t9004\\/210\\/1160833155\\/647627\\/ad6be059\\/59b4f4e1N9a2b1532.jpg!q70.jpg|https:\\/\\/m.360buyimg.com\\/n0\\/jfs\\/t7504\\/338\\/63721388\\/491286\\/f5957f53\\/598e95f1N7f2adb87.jpg!q70.jpg|https:\\/\\/m.360buyimg.com\\/n0\\/jfs\\/t7441\\/10\\/64242474\\/419246\\/adb30a7d\\/598e95fbNd989ba0a.jpg!q70.jpg\",\"num\":3,\"pid\":1,\"price\":118.0,\"pscid\":1,\"selected\":0,\"sellerid\":17,\"subhead\":\"每个中秋都不能简单，无论身在何处，你总需要一块饼让生活更圆满，京东月饼让爱更圆满京东自营，闪电配送，更多惊喜，快用手指戳一下\",\"title\":\"北京稻香村 稻香村中秋节月饼 老北京月饼礼盒655g\"}],\"sellerName\":\"商家17\",\"sellerid\":\"17\"}]}";try {Gson gson = new Gson();Type type = new TypeToken<Result<List<Shop>>>() {}.getType();Result result = gson.fromJson(resultString, type);
// Result<List<Goods>> result = new Result<>();
// result.setCode(0);
// List<Goods> list = new ArrayList<>();
// for (int i = 0; i < 30; i++) {
// Goods goods = new Goods();
// goods.setImages("");
// goods.setTitle("手机"+i);
// list.add(goods);
// }
// result.setData(list);return result;} catch (Exception e) {}Result result = new Result();result.setCode(-1);result.setMsg("数据解析异常");return result;}}presenter
public class CartPresenter extends BasePresenter {public CartPresenter(DataCall dataCall) {super(dataCall);}@Overrideprotected Result getData(Object... args) {Result result = CartModel.goodsList();//调用网络请求获取数据return result;}}两个recycleview 的条目布局
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:orientation="vertical" android:layout_width="match_parent"android:layout_height="match_parent"><TextViewandroid:id="@+id/left_text"android:layout_width="100dp"android:layout_height="50dp"android:textSize="16sp"android:gravity="center"android:textColor="@color/white"android:text="aa" />
</LinearLayout><RelativeLayoutxmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="wrap_content"android:padding="10dp"android:layout_marginLeft="10dp"android:layout_marginRight="10dp"android:orientation="horizontal"><ImageViewandroid:id="@+id/image"android:layout_width="100dp"android:layout_height="wrap_content"android:adjustViewBounds="true"android:minHeight="50dp"android:layout_alignParentLeft="true"android:src="@mipmap/ic_launcher"/><TextViewandroid:id="@+id/text"android:layout_toRightOf="@+id/image"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_marginTop="10dp"android:text="aa"android:padding="10dp"/><TextViewandroid:id="@+id/text_price"android:layout_toRightOf="@+id/image"android:layout_below="@+id/text"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_marginTop="10dp"android:text="价格"android:padding="10dp"/><com.example.yue3.util.view.AddSubLayoutandroid:id="@+id/add_sub_layout"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignParentRight="true"android:layout_alignParentBottom="true"android:layout_marginRight="20dp"android:layout_marginBottom="20dp"></com.example.yue3.util.view.AddSubLayout></RelativeLayout>加减布局
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"xmlns:tools="http://schemas.android.com/tools"android:layout_width="wrap_content"android:layout_height="wrap_content"android:orientation="horizontal"><TextViewandroid:id="@+id/btn_add"android:layout_width="30dp"android:layout_height="30dp"android:focusable="false"android:textSize="20sp"android:gravity="center"android:text="+" /><TextViewandroid:id="@+id/text_number"android:layout_width="60dp"android:layout_height="30dp"android:gravity="center"android:textSize="14sp"android:text="1000" /><TextViewandroid:id="@+id/btn_sub"android:layout_width="30dp"android:layout_height="30dp"android:textSize="20sp"android:focusable="false"android:gravity="center"android:text="-" />
</LinearLayout>适配器
两个recycleview 的适配器
public class LeftAdapter extends RecyclerView.Adapter<LeftAdapter.MyHolder> {private List<Shop> mList = new ArrayList<>();public void addAll(List<Shop> list){mList.addAll(list);}@NonNull@Overridepublic MyHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {View view = View.inflate(viewGroup.getContext(), R.layout.recycler_left_item,null);MyHolder myHolder = new MyHolder(view);return myHolder;}@Overridepublic void onBindViewHolder(@NonNull final MyHolder myHolder, int i) {final Shop shop = mList.get(i);myHolder.text.setText(shop.getSellerName());myHolder.text.setBackgroundResource(shop.getBackground());myHolder.text.setTextColor(shop.getTextColor());myHolder.itemView.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {for (int j = 0; j <mList.size() ; j++) {mList.get(j).setTextColor(0xffffffff);mList.get(j).setBackground(R.color.grayblack);}shop.setBackground(R.color.white);shop.setTextColor(0xff000000);notifyDataSetChanged();onItemClickListenter.onItemClick(shop);//切换右边的列表}});}@Overridepublic int getItemCount() {return mList.size();}public List<Shop> getList() {return mList;}class MyHolder extends RecyclerView.ViewHolder{TextView text;public MyHolder(@NonNull View itemView) {super(itemView);text = itemView.findViewById(R.id.left_text);}}private OnItemClickListenter onItemClickListenter;public void setOnItemClickListenter(OnItemClickListenter onItemClickListenter) {this.onItemClickListenter = onItemClickListenter;}public interface OnItemClickListenter{void onItemClick(Shop shop);}}public class RightAdapter extends RecyclerView.Adapter<RightAdapter.ChildHolder> {private List<Goods> mList = new ArrayList<>();public void addAll(List<Goods> list) {mList.addAll(list);}@NonNull@Overridepublic ChildHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int viewType) {View view = View.inflate(viewGroup.getContext(), R.layout.recycler_right_item, null);ChildHolder myHolder = new ChildHolder(view);return myHolder;}@Overridepublic void onBindViewHolder(@NonNull ChildHolder childHolder, int position) {final Goods goods = mList.get(position);childHolder.text.setText(goods.getTitle());childHolder.price.setText("单价：" + goods.getPrice());//单价String imageurl = "https" + goods.getImages().split("https")[1];Log.i("dt", "imageUrl: " + imageurl);imageurl = imageurl.substring(0, imageurl.lastIndexOf(".jpg") + ".jpg".length());Glide.with(DTApplication.getInstance()).load(imageurl).into(childHolder.image);//加载图片childHolder.addSub.setCount(goods.getNum());//设置商品数量childHolder.addSub.setAddSubListener(new AddSubLayout.AddSubListener() {@Overridepublic void addSub(int count) {goods.setNum(count);onNumListener.onNum();//计算价格}});}@Overridepublic int getItemCount() {return mList.size();}public void clearList() {mList.clear();}class ChildHolder extends RecyclerView.ViewHolder {TextView text;TextView price;ImageView image;AddSubLayout addSub;public ChildHolder(@NonNull View itemView) {super(itemView);text = itemView.findViewById(R.id.text);price = itemView.findViewById(R.id.text_price);image = itemView.findViewById(R.id.image);addSub = itemView.findViewById(R.id.add_sub_layout);}}private OnNumListener onNumListener;public void setOnNumListener(OnNumListener onNumListener) {this.onNumListener = onNumListener;}public interface OnNumListener{void onNum();}
}页面实现
public class ShopCartActivity1 extends AppCompatActivity implementsDataCall<List<Shop>> {private TextView mSumPrice;private TextView mCount;private RecyclerView mLeftRecycler,mRightRecycler;private LeftAdapter mLeftAdapter;private RightAdapter mRightAdapter;private CartPresenter cartPresenter = new CartPresenter(this);@Overrideprotected void onCreate(@Nullable Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_cart);mSumPrice = findViewById(R.id.goods_sum_price);mCount = findViewById(R.id.goods_number);mLeftRecycler = findViewById(R.id.left_recycler);mRightRecycler = findViewById(R.id.right_recycler);mLeftRecycler.setLayoutManager(new LinearLayoutManager(this));mRightRecycler.setLayoutManager(new LinearLayoutManager(this));mLeftAdapter = new LeftAdapter();mLeftAdapter.setOnItemClickListenter(new LeftAdapter.OnItemClickListenter() {@Overridepublic void onItemClick(Shop shop) {mRightAdapter.clearList();//清空数据mRightAdapter.addAll(shop.getList());mRightAdapter.notifyDataSetChanged();}});mLeftRecycler.setAdapter(mLeftAdapter);mRightAdapter = new RightAdapter();mRightAdapter.setOnNumListener(new RightAdapter.OnNumListener() {@Overridepublic void onNum() {calculatePrice(mLeftAdapter.getList());}});mRightRecycler.setAdapter(mRightAdapter);cartPresenter.requestData();}@Overridepublic void success(List<Shop> data) {calculatePrice(data);//计算价格和数量mLeftAdapter.addAll(data);//左边的添加类型//得到默认选中的shop，设置上颜色和背景Shop shop = data.get(1);shop.setTextColor(0xff000000);shop.setBackground(R.color.white);mRightAdapter.addAll(shop.getList());mLeftAdapter.notifyDataSetChanged();mRightAdapter.notifyDataSetChanged();}@Overridepublic void fail(Result result) {Toast.makeText(this, result.getCode() + " " + result.getMsg(), Toast.LENGTH_LONG).show();}/*** @author dingtao* @date 2018/12/18 7:01 PM* 计算总价格*/private void calculatePrice(List<Shop> shopList){double totalPrice=0;int totalNum = 0;for (int i = 0; i < shopList.size(); i++) {//循环的商家Shop shop = shopList.get(i);for (int j = 0; j < shop.getList().size(); j++) {Goods goods = shop.getList().get(j);//计算价格totalPrice = totalPrice + goods.getNum() * goods.getPrice();totalNum+=goods.getNum();//计数}}mSumPrice.setText("价格："+totalPrice);mCount.setText(""+totalNum);}}mvp实现Xrecyclerview的上下拉和购物车功能（仿饿了么）相关推荐
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