商品詳情頁面是通過 點選首頁的商品,傳當前商品的資訊到商品詳情頁面展示,

點選 加入購物車的按鈕 將當前商品加入到購物車裡

這是首頁的商品展示

點選商品 跳轉到商品詳情頁面

商品詳情頁面的佈局

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:fresco="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="com.example.jdong.CustomXiangQiangActivity">

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1"
        android:background="#F5F5F5"
        android:gravity="center_vertical"
        android:padding="10dp">

        <ImageView
            android:id="@+id/custom_fanhui"
            android:layout_width="40dp"
            android:layout_height="40dp"
            android:src="@drawable/aa4" />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerHorizontal="true"
            android:text="商品詳情"
            android:textSize="23sp" />
    </RelativeLayout>
    <!-- fresco:failureImage="@drawable/tuijian"
   fresco:placeholderImage="@drawable/tuijian"-->

    <LinearLayout

        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="10"
        android:orientation="vertical">

        <android.support.v4.view.ViewPager
            android:id="@+id/custom_xq_viewpager"
            android:layout_width="match_parent"
            android:layout_height="560dp" />

        <TextView
            android:id="@+id/custom_xq_title"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginLeft="20dp"
            android:layout_marginTop="20dp"
            android:paddingLeft="20dp"
            android:text="Apple iPhone 8 Plus"
            android:textColor="#000"
            android:textSize="23sp" />

        <TextView
            android:id="@+id/custom_xq_bargin_price"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginLeft="20dp"
            android:padding="10dp"
            android:paddingLeft="30dp"
            android:text="¥6688.00"
            android:textColor="#000"
            android:textSize="23sp" />

        <TextView
            android:id="@+id/custom_xq_price"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginLeft="20dp"
            android:padding="10dp"
            android:paddingLeft="30dp"
            android:text="¥6688.00"
            android:textColor="#F23030"
            android:textSize="26sp"
            android:textStyle="bold" />
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1"
        android:gravity="center_vertical"
        android:orientation="horizontal">

        <TextView
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:gravity="center"
            android:text="供應商"
            android:textSize="18sp" />

        <TextView
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:gravity="center"
            android:text="聯絡賣家"
            android:textSize="18sp" />

        <TextView
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:gravity="center"
            android:text="進入店鋪"
            android:textSize="18sp" />

        <TextView
            android:id="@+id/jiagou_btn"
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:background="#f00"
            android:gravity="center"
            android:paddingLeft="20dp"
            android:paddingRight="20dp"
            android:text="加入購物車"
            android:textColor="#fff"
            android:textSize="19sp" />

    </LinearLayout>
</LinearLayout>
 

public class CustomXiangQiangActivity extends AppCompatActivity implements AddCartViewCallBack{

    @BindView(R.id.custom_fanhui)
    ImageView customFanhui;
    @BindView(R.id.custom_xq_viewpager)
    ViewPager customXqViewpager;
    @BindView(R.id.custom_xq_title)
    TextView customXqTitle;
    @BindView(R.id.custom_xq_bargin_price)
    TextView customXqBarginPrice;
    @BindView(R.id.custom_xq_price)
    TextView customXqPrice;
    @BindView(R.id.jiagou_btn)
    TextView jiagouBtn;
    private AddCartPresenter addCartPresenter;
    private String pid;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_custom_xing_qing);
        ButterKnife.bind(this);
        //https://www.zhaoapi.cn/product/addCart
        //新增購物車

        //拿到傳來的引數
        Intent intent = getIntent();
        //images,pid,bargainPrice,title,price
        pid = intent.getStringExtra("pid");
        String images = intent.getStringExtra("images");
        String bargainPrice = intent.getStringExtra("bargainPrice");
        String title = intent.getStringExtra("title");
        String price = intent.getStringExtra("price");


        //原價設定刪除線
        customXqPrice.setText("¥"+price+"");
        customXqTitle.setText(title+"");
        customXqBarginPrice.getPaint().setFlags(Paint.UNDERLINE_TEXT_FLAG);//下劃線
        customXqBarginPrice.getPaint().setFlags(Paint.STRIKE_THRU_TEXT_FLAG); //中間橫線（刪除線）
        customXqBarginPrice.getPaint().setAntiAlias(true);// 抗鋸齒
        customXqBarginPrice.setText("¥"+bargainPrice+"");

        List<String> listImage = new ArrayList<>();

        //圖片的集合
        if(images.contains("|")){
            //如果需要拆分
            String[] split = images.split("\\|");
            for (int i=0;i<split.length;i++){
                listImage.add(split[0]);
            }
        }else{
            listImage.add(images);
        }

        ViewPagerAdapter viewPagerAdapter = new ViewPagerAdapter(this);
        viewPagerAdapter.addData(listImage);
        customXqViewpager.setAdapter(viewPagerAdapter);

        addCartPresenter = new AddCartPresenter(this);

    }

    @OnClick({R.id.custom_fanhui, R.id.custom_xq_viewpager, R.id.custom_xq_title, R.id.custom_xq_bargin_price, R.id.custom_xq_price, R.id.jiagou_btn})
    public void onViewClicked(View view) {
        switch (view.getId()) {
            case R.id.custom_fanhui:
                finish();
                break;

            case R.id.jiagou_btn://點選加入購物車,動態新增商品根據pid,
               // https://www.zhaoapi.cn/product/addCart
                //"uid": 1650,
                // "token": "2FC3EF31EA25696D2715A971ADE38DE1",
                 addCartPresenter.getData(pid);
                break;
        }
    }

    @Override
    public void success(AddCartBean addCartBean) {

         Toast.makeText(this,""+addCartBean.getMsg(),Toast.LENGTH_LONG).show();
    }

    @Override
    public void failure() {

    }
}
 

public class AddCartPresenter {
    AddCartModel addCartModel = new AddCartModel();

    AddCartViewCallBack addCartViewCallBack;
    public AddCartPresenter(AddCartViewCallBack addCartViewCallBack) {
        this.addCartViewCallBack = addCartViewCallBack;
    }

    public void getData(String pid) {

        addCartModel.getData(pid, new AddCartModelCallBack() {
            @Override
            public void success(AddCartBean addCartBean) {
                addCartViewCallBack.success(addCartBean);
            }

            @Override
            public void failure() {
                addCartViewCallBack.failure();
            }
        });

    }
}
 

public class AddCartModel {

  public void getData(String pid, final AddCartModelCallBack addCartModelCallBack) {
      // https://www.zhaoapi.cn/product/addCart?source=android&uid=1650&pid=57
      //"uid": 1650,
      // "token": "2FC3EF31EA25696D2715A971ADE38DE1",
      //"pid":57
        Retrofit retrofit = new Retrofit.Builder()
                .baseUrl("https://www.zhaoapi.cn")
                .addConverterFactory(GsonConverterFactory.create())
                .build();

        IGetDataService service = retrofit.create(IGetDataService.class);

        Map<String,String> map = new HashMap<>();
        map.put("source","android");
        map.put("uid","1650");
        map.put("token","2FC3EF31EA25696D2715A971ADE38DE1");
        map.put("pid",pid);

      service.addCart(map).enqueue(new Callback<AddCartBean>() {
            @Override
            public void onResponse(Call<AddCartBean> call, Response<AddCartBean> response) {
                AddCartBean addCartBean = response.body();
                addCartModelCallBack.success(addCartBean);
            }

            @Override
            public void onFailure(Call<AddCartBean> call, Throwable t) {
                addCartModelCallBack.failure();
            }
        });
    }
}