京东分类

àì夳堔傛蜴生んèń 2023-10-17 22:01 55阅读 0赞

阅读数：9

Xml文件
    <ListView
            android:id="@+id/left_listview"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
    
            />
    
        <ListView
            android:id="@+id/right_listview"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="3"
    
            />
     left_xml---------------------------------------------
     <TextView xmlns:android="http://schemas.android.com/apk/res/android"
        android:id="@+id/left_item_tv"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:orientation="vertical"
        android:text="商品"
        android:textSize="20sp">
    
    
      right_xml------------------------------------------------------
      <TextView
            android:id="@+id/right_title"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="标题"
            android:textSize="20sp" />
    
        <com.example.administrator.fenlei.view.MyGridView
            android:id="@+id/right_gv"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:numColumns="3"></com.example.administrator.fenlei.view.MyGridView>
    
    
    gv_xlm---------------------------------------------------
      <ImageView
            android:id="@+id/gv_pic"
            android:layout_width="60dp"
            android:layout_height="60dp"
            android:scaleType="centerCrop"
            android:src="@mipmap/ic_launcher" />
    
        <TextView
            android:id="@+id/gv_name"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="商品名称"
            android:textSize="15sp" />
    
    MainActivity主页面------------------------------------------------
    
    public class MainActivity extends AppCompatActivity implements IMainView{
        private static final String TAG = "MainActivity";
        private ListView left_listview;
        private IPresenterImpl iPresenter;
        private List<LeftBean.DataBean> list;
        private String cid;
        private ListView right_listview;
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
    
    
            initDate();
            initView();
        }
    
        private void initView() {
            left_listview = findViewById(R.id.left_listview);
            right_listview = findViewById(R.id.right_listview);
            left_listview.setOnItemClickListener(new AdapterView.OnItemClickListener() {
                @Override
                public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                    MainActivity.this.cid=list.get(position).getCid()+"";
                    iPresenter.RightDate(new IModeImpl(),MainActivity.this);
                }
            });
        }
    
        private void initDate() {
            iPresenter = new IPresenterImpl();
            iPresenter.LeftDate(new IModeImpl(),this);
        }
    
        @Override
        public void showLeft(List<LeftBean.DataBean> list) {
            this.list=list;
            Log.d(TAG, "showLeft: "+list.size());
            LeftAdapter leftAdapter=new LeftAdapter(list,MainActivity.this);
            left_listview.setAdapter(leftAdapter);
            int cid = list.get(0).getCid();
            MainActivity.this.cid=cid+"";
            iPresenter.RightDate(new IModeImpl(),MainActivity.this);
        }
    
        @Override
        public void showRight(List<RightBean.DataBean> list) {
    
            Log.d(TAG, "showRight: "+list.size());
            RightAdapter rightAdapter=new RightAdapter(list,this);
            right_listview.setAdapter(rightAdapter);
        }
    
        @Override
        public String getCid() {
            return this.cid;
        }
    }
    
    p层----------------------------------------------------------------
    
    public class IPresenterImpl implements IPresenter {
        private static final String TAG = "IPresenterImpl";
        @Override
        public void LeftDate(IModel iModel, final IMainView iMainView) {
            Map<String,String> map=new HashMap<>();
    
            iModel.GetLeft(Httpfig.left_url, map, new GetLeftListener() {
                @Override
                public void getLeftSuccess(String json) {
                    Gson gson=new Gson();
                    LeftBean leftBean = gson.fromJson(json, LeftBean.class);
                    List<LeftBean.DataBean> data = leftBean.getData();
                    iMainView.showLeft(data);
                }
    
                @Override
                public void getLeftError(String error) {
                    Log.d(TAG, "getLeftError: 失败");
                }
            });
        }
    
        @Override
        public void RightDate(IModel iModel, final IMainView iMainView) {
            Map<String,String> map=new HashMap<>();
            map.put("cid",iMainView.getCid());
            iModel.GetRight(Httpfig.right_url, map, new GetRightListener() {
                @Override
                public void getRightSuccess(String json) {
                    Gson gson=new Gson();
    
                    RightBean rightBean = gson.fromJson(json, RightBean.class);
                    List<RightBean.DataBean> data = rightBean.getData();
                    iMainView.showRight(data);
                }
    
                @Override
                public void getRightError(String error) {
                    Log.d(TAG, "getLeftError: 失败");
                }
            });
        }
    }
    
    model层------------------------------------------------------------
    public class IModeImpl implements IModel{
        @Override
        public void GetLeft(String url, Map<String, String> map, final GetLeftListener getLeftListener) {
            OKHttpUtils okHttpUtils=new OKHttpUtils();
            okHttpUtils.okPost(url,map);
            okHttpUtils.setOnLoginListener(new OKHttpUtils.LoginListener() {
                @Override
                public void loginSuccess(String json) {
                    getLeftListener.getLeftSuccess(json);
                }
    
                @Override
                public void loginError(String error) {
                    getLeftListener.getLeftError(error);
                }
            });
        }
    
        @Override
        public void GetRight(String url, Map<String, String> map, final GetRightListener getRightListener) {
            OKHttpUtils okHttpUtils=new OKHttpUtils();
            okHttpUtils.okPost(url,map);
            okHttpUtils.setOnLoginListener(new OKHttpUtils.LoginListener() {
                @Override
                public void loginSuccess(String json) {
                    getRightListener.getRightSuccess(json);
                }
    
                @Override
                public void loginError(String error) {
                    getRightListener.getRightError(error);
                }
            });
        }
    
    -------------------------------------------------------------------
    MyGridView---------------------
    public class MyGridView extends GridView {
        public MyGridView(Context context, List<RightBean.DataBean.ListBean> list) {
            super(context);
        }
    
        public MyGridView(Context context, AttributeSet attrs) {
            super(context, attrs);
        }
    
        public MyGridView(Context context, AttributeSet attrs, int defStyleAttr) {
            super(context, attrs, defStyleAttr);
        }
    
        @Override
        protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
    
            int i = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2, MeasureSpec.AT_MOST);
    
            super.onMeasure(widthMeasureSpec, i);
        }
    }