购物车详情

购物车 详情

第一步 依赖权限
implementation ‘com.google.code.gson:gson:2.8.5’
implementation ‘com.squareup.okhttp3:okhttp:3.7.0’
implementation ‘com.squareup.okio:okio:1.12.0’
implementation ‘com.jakewharton:butterknife:8.6.0’
annotationProcessor ‘com.jakewharton:butterknife-compiler:8.6.0’
implementation ‘com.android.support:recyclerview-v7:28.0.0’
implementation ‘com.github.bumptech.glide:glide:4.8.0’
implementation ‘com.android.support:support-v4:28.0.0’

  <uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>

第二步 网络封装

public class HttpUtils {
private OkHttpClient client;
private static HttpUtils instance;
public Handler handler=new Handler();
//拦截器
private Interceptor getAppInterceptor(){
Interceptor interceptor=new Interceptor() {
@Override
public Response intercept(Chain chain) throws IOException {
Request request=chain.request();
Log.e("+++++++++++++++",“拦截前”);
Response response=chain.proceed(request);
Log.e("+++++++++++++++",“拦截后”);
return response;
}
};
return interceptor;
}
//耗时操作
private HttpUtils(){
File file=new File(Environment.getExternalStorageDirectory(),“cachell”);
client=new OkHttpClient().newBuilder()
.readTimeout(3000,TimeUnit.SECONDS)
.connectTimeout(3000,TimeUnit.SECONDS)
.addInterceptor(getAppInterceptor())
.cache(new Cache(file,10*1024))
.build();
}
//单例模式
public static HttpUtils getInstance(){
if (instance==null){
synchronized (HttpUtils.class){
instance = new HttpUtils();
}
}
return instance;
}
public void doGet(String url, final Class clazz, final NetCallBack netCallBack){
final Request request = new Request.Builder().get().url(url).build();
final Call call = client.newCall(request);
call.enqueue(new Callback() {
@Override
public void onFailure(Call call, final IOException e) {
handler.post(new Runnable() {
@Override
public void run() {
netCallBack.OnFailure(e);
}
});
}

        @Override
        public void onResponse(Call call, Response response) throws IOException {
            String s=response.body().string();
            Gson gson=new Gson();
            final Object oj = gson.fromJson(s, clazz);
            handler.post(new Runnable() {
                @Override
                public void run() {
                    netCallBack.OnSuccess(oj);
                }
            });
        }
    });
}
public interface NetCallBack{
    void OnSuccess(Object oj);
    void OnFailure(Exception e);
}

}

MVP框架
Model
public class ShopModel implements IShopModel{
@Override
public void getData(String url, final Cteanview cteanview) {
HttpUtils.getInstance().doGet(url,CartBean.class, new HttpUtils.NetCallBack() {
@Override
public void OnSuccess(Object oj) {
cteanview.success(oj);
}

        @Override
        public void OnFailure(Exception e) {
            cteanview.Fuils();
        }
    });
}

}

model接口

public interface IShopModel {
void getData(String url,Cteanview cteanview);
interface Cteanview{
void success(Object data);
void Fuils();
}
}
Presenter
public class ShopPresenter implements IShopPresenter{
MainActivity mView;
private final ShopModel shopModel;
String url=“http://www.zhaoapi.cn/product/getCarts?uid=71”;
public ShopPresenter(MainActivity mView){
this.mView=mView;
shopModel = new ShopModel();
}
@Override
public void getModelData() {
shopModel.getData(url, new IShopModel.Cteanview() {
@Override
public void success(Object data) {
mView.getViewData(data);
}

        @Override
        public void Fuils() {

        }
    });

}
}

Presenter 接口

public interface IShopPresenter {
void getModelData();
}

View

public interface ShopView {
void getViewData(Object data);
}

将数据传到List集合

商家适配器
public class CarAdapter1 extends RecyclerView.Adapter<CarAdapter1.CarHolder> {
private final Context context;
private final List<CartBean.DataBean> mList;
private final LayoutInflater from;

public CarAdapter1(Context context, List<CartBean.DataBean> list) {
    this.context = context;
    this.mList = list;
    from = LayoutInflater.from(context);
}

@NonNull
@Override
public CarAdapter1.CarHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
    final View inflate = from.inflate(R.layout.rec1, viewGroup, false);
    final CarHolder carHolder = new CarHolder(inflate);
    return carHolder;
}

@Override
public void onBindViewHolder(@NonNull CarAdapter1.CarHolder carHolder, final int i) {
    carHolder.tv_shang.setText(mList.get(i).getSellerName());

    final List<CartBean.DataBean.ListBean> list=mList.get(i).getList();
    carHolder.rec1.setLayoutManager(new LinearLayoutManager(context));
    CarAdapter2 carAdapter2=new CarAdapter2(context,mList.get(i).getList());
    LinearLayoutManager linearLayoutManager=new LinearLayoutManager(context);
    carHolder.rec1.setAdapter(carAdapter2);

    //复选框
    carHolder.box_shang.setChecked(mList.get(i).isCheck());
    carAdapter2.setListener(new CarAdapter2.ShopCallBackListener() {
        @Override
        public void callBack() {
            //商品适配里回调给 Activity计算总数 总价格
            if (mShopCallBackListener!=null){
                mShopCallBackListener.callBack();
            }

            mList.get(i).getList();
        }
    });
}

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

public class CarHolder extends RecyclerView.ViewHolder {

    private final TextView tv_shang;
    private final CheckBox box_shang;
    private final RecyclerView rec1;

    public CarHolder(@NonNull View itemView) {
        super(itemView);
        tv_shang = itemView.findViewById(R.id.tv_shang);
        box_shang = itemView.findViewById(R.id.shang_box);
        rec1 = itemView.findViewById(R.id.pin_rec);
    }
}
private CarAdapter2.ShopCallBackListener mShopCallBackListener;
public void setListener(ShopCallBackListener listener){
    this.mShopCallBackListener= (CarAdapter2.ShopCallBackListener) listener;
}

public interface ShopCallBackListener{
    void callBack(List<CartBean.DataBean> list);
}

}

回调给Activity
public class MainActivity extends AppCompatActivity {
private RecyclerView recyclerView;
private List<CartBean.DataBean> list;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    recyclerView=findViewById(R.id.shang_rec);

    LinearLayoutManager linearLayoutManager=new LinearLayoutManager(this);
    linearLayoutManager.setOrientation(OrientationHelper.VERTICAL);
    recyclerView.setLayoutManager(linearLayoutManager);

    ShopPresenter shopPresenter=new ShopPresenter(this);
    shopPresenter.getModelData();
}

public void getViewData(Object data) {
    CartBean cartBean= (CartBean) data;
    list = cartBean.getData();
    //适配器
    CarAdapter1 adapter1=new CarAdapter1(MainActivity.this,list);
    recyclerView.setAdapter(adapter1);

}

}

展示出商家

商品适配器
public class CarAdapter2 extends RecyclerView.Adapter<CarAdapter2.CarHolder1> {
private Context context;
private List<CartBean.DataBean.ListBean> mList;
private final LayoutInflater from;
private CarHolder1 carHolder1;

public CarAdapter2(Context context, List<CartBean.DataBean.ListBean> mList) {
    this.context=context;
    this.mList=mList;
    from = LayoutInflater.from(context);
}

@NonNull
@Override
public CarAdapter2.CarHolder1 onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
    View view=from.inflate(R.layout.rec2,viewGroup,false);
    carHolder1 = new CarHolder1(view);
    return carHolder1;
}

@Override
public void onBindViewHolder(@NonNull CarAdapter2.CarHolder1 carHolder1, final int i) {
    carHolder1.tv_neirong.setText(mList.get(i).getTitle());
    carHolder1.tv_shang_price.setText(mList.get(i).getPrice()+"元");
    Glide.with(context).load(mList.get(i).getImages().split("\\|")[0].replace("https","http")).into(carHolder1.image_pin);
    //设置自定义View
    carHolder1.customAddView.setData(this,mList,i);
    carHolder1.customAddView.setOnCallBack(new CustomAddView.CallBackListener() {
        @Override
        public void callBack() {
            if (mShopCallBackListener!=null){
                mShopCallBackListener.callBack();
            }
        }
    });
    carHolder1.box_pin.setChecked(mList.get(i).isCheck);
    carHolder1.box_pin.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
        @Override
        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
            mList.get(i).setCheck(isChecked);
            //回调,目的是告诉activity有人改变状态
            if (mShopCallBackListener!=null){
                mShopCallBackListener.callBack();
            }
        }
    });

}

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

public class CarHolder1 extends RecyclerView.ViewHolder {

    private final TextView tv_neirong;
    private final ImageView image_pin;
    private final CheckBox box_pin;
    private final RecyclerView rec_pin;
    private final CustomAddView customAddView;

    private final TextView tv_shang_price;


    public CarHolder1(@NonNull View itemView) {
        super(itemView);
        tv_neirong = itemView.findViewById(R.id.neirong);
        image_pin = itemView.findViewById(R.id.image_pin);
        box_pin = itemView.findViewById(R.id.pin_box);
        rec_pin = itemView.findViewById(R.id.pin_rec);
        customAddView = itemView.findViewById(R.id.custom_product);
        tv_shang_price=itemView.findViewById(R.id.tv_shang_price);

    }
}
private ShopCallBackListener mShopCallBackListener;

public void setListener(ShopCallBackListener listener) {
    this.mShopCallBackListener = listener;
}

public interface ShopCallBackListener {
    void callBack();
}

}

传给子条目
public class CustomAddView extends RelativeLayout implements View.OnClickListener {
Context mContext;
private EditText mEditCar;

private List<CartBean.DataBean.ListBean> listBeans;
private CarAdapter2 carAdapter2;
private int i;

public CustomAddView(Context context) {
    super(context);
    init(context);
}

public CustomAddView(Context context, AttributeSet attrs) {
    super(context, attrs);
    init(context);
}



public CustomAddView(Context context, AttributeSet attrs, int defStyleAttr) {
    super(context, attrs, defStyleAttr);
    init(context);
}

private void init(Context context) {
    this.mContext = context;
    View view = View.inflate(context, R.layout.car_num, null);
    ImageView addIamge = (ImageView) view.findViewById(R.id.add_car);
    ImageView jianIamge = (ImageView) view.findViewById(R.id.jian_car);
    mEditCar = view.findViewById(R.id.edit_shop_car);
    addIamge.setOnClickListener(this);
    jianIamge.setOnClickListener(this);
    addView(view);

    mEditCar.addTextChangedListener(new TextWatcher() {
        @Override
        public void beforeTextChanged(CharSequence s, int start, int count, int after) {

        }

        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {
            num = Integer.parseInt(s.toString());
            //TODO:改变数量
        }

        @Override
        public void afterTextChanged(Editable s) {

        }
    });


}

private int num;

@Override
public void onClick(View v) {
    switch (v.getId()) {
        case R.id.add_car:
            //改变数量，设置数量，改变对象内容，回调，局部刷新
            num++;
            mEditCar.setText(num + "");
            listBeans.get(i).getNum();




            break;
        case R.id.jian_car:
            if (num > 1) {
                num--;
                mEditCar.setText(num + "");
            } else {
                Toast.makeText(mContext, "商品数量不能小于1", Toast.LENGTH_LONG).show();
            }

// mEditCar.setText(num + “”);
//// listBeans.get(position).setNum(num);
mCallBackListener.callBack();
// mProductsAdapter.notifyItemChanged(position);
break;
default:
break;
}
}
public void setData(CarAdapter2 carAdapter2, List<CartBean.DataBean.ListBean> list, int position) {
this.listBeans = list;
this.carAdapter2 = carAdapter2;
i = position;
num = Integer.parseInt(listBeans.get(i).getNum());
mEditCar.setText(this.num + “”);
}
private CallBackListener mCallBackListener;

public void setOnCallBack(CallBackListener listener) {
    this.mCallBackListener = listener;
}

public interface CallBackListener {
    void callBack();
}
}

以上是实现的代码

这是布局
布局分别是RecycView嵌套
MianActivity布局

<?xml version="1.0" encoding="utf-8"?>

<android.support.v7.widget.RecyclerView
android:id="@+id/shang_rec"
android:layout_width=“match_parent”
android:layout_height=“match_parent”></android.support.v7.widget.RecyclerView>

<RelativeLayout
    android:id="@+id/layout_buttom"
    android:layout_width="match_parent"
    android:background="#ffffff"
    android:layout_height="0dp"
    android:layout_weight="1"
    >

    <CheckBox
        android:id="@+id/quan_box"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"

        android:layout_alignParentStart="true"
        android:text="全选/全不选" />

    <TextView
        android:id="@+id/tv_price"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBottom="@+id/quan_box"
        android:layout_alignParentStart="true"
        android:layout_marginStart="118dp"
        android:layout_marginBottom="-16dp"
        android:text="合计: 0.00"
        android:textSize="16sp" />

    <RelativeLayout
        android:layout_width="100dp"
        android:layout_height="match_parent"
        android:layout_alignParentTop="true"
        android:layout_alignParentRight="true"
        android:layout_marginTop="0dp"
        android:background="#FF0000">

        <TextView
            android:id="@+id/sum_tv"

            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:gravity="center"
            android:layout_alignParentEnd="true"
            android:layout_marginEnd="25dp"
            android:layout_marginBottom="0dp"
            android:text="   去结算 (0)" />

    </RelativeLayout>

</RelativeLayout>

RecyclerView1

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout
    android:orientation="horizontal"
    android:layout_width="match_parent"
    android:layout_height="40dp">
    <CheckBox
        android:id="@+id/shang_box"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        />
    <TextView
        android:id="@+id/tv_shang"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="商家"
        />
</LinearLayout>

<android.support.v7.widget.RecyclerView
    android:id="@+id/pin_rec"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"></android.support.v7.widget.RecyclerView>

RecyclerView2

<?xml version="1.0" encoding="utf-8"?>

<CheckBox
    android:id="@+id/pin_box"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" />
<ImageView
    android:id="@+id/image_pin"
    android:layout_width="100dp"
    android:layout_height="100dp"
    android:src="@drawable/ic_launcher_background"
    />
<RelativeLayout
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="80dp">
    <TextView
        android:id="@+id/neirong"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="内容"
        />
<RelativeLayout
    android:layout_alignParentBottom="true"
    android:layout_width="match_parent"
    android:layout_height="100dp">

    <TextView
        android:id="@+id/tv_shang_price"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentStart="true"
        android:layout_centerVertical="true"
        android:text="商品价格" />

    <com.example.wo.shopcar.mvp.view.CustomAddView
        android:id="@+id/custom_product"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/tv_shang_price"
        android:layout_alignParentStart="true"
        android:layout_marginStart="76dp"
        android:layout_marginTop="-6dp"></com.example.wo.shopcar.mvp.view.CustomAddView>


</RelativeLayout>

</RelativeLayout>
<View
    android:background="#cccccc"
    android:layout_width="match_parent"
    android:layout_height="5dp"/>

加减器

<?xml version="1.0" encoding="utf-8"?>

<ImageView
    android:id="@+id/jian_car"
    android:layout_width="20dp"
    android:layout_height="20dp"
    android:layout_centerVertical="true"
    android:src="@mipmap/jian" />

<ImageView
    android:id="@+id/add_car"
    android:layout_width="20dp"
    android:layout_height="20dp"
    android:layout_centerVertical="true"
    android:layout_toRightOf="@+id/edit_shop_car"
    android:src="@mipmap/add" />

<EditText
    android:id="@+id/edit_shop_car"
    android:layout_width="50dp"
    android:layout_height="30dp"
    android:layout_centerVertical="true"
    android:layout_toRightOf="@+id/jian_car"
    android:background="@drawable/home_shop_bg"
    android:gravity="center_horizontal"
    android:inputType="number"
    android:text="1"
    android:textSize="14sp" />