Recycleview+XRecycleView+购物车

其他 2019-01-02 00:26:17 阅读次数: 0

先看效果图
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因为第一个页面有两次请求数据 所以成功的方法添加了个 int type类型区分
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1.MainActivity
public class MainActivity extends BaseActivity implements View.OnClickListener {

private FragmentManager manager;
private AFragment aFragment;
private BFragment bFragment;
private Button mShouBtn;
private Button mDingBtn;

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

@Override
protected void initView() {
    mShouBtn = findViewById(R.id.ShouYe_Btn);
    mDingBtn = findViewById(R.id.DingDan_Btn);
    manager = getSupportFragmentManager();
    aFragment = new AFragment();
    bFragment = new BFragment();

}

@Override
protected void setOnClick() {
    mShouBtn.setOnClickListener(this);
    mDingBtn.setOnClickListener(this);
}

@Override
protected void pageLogic() {
    manager.beginTransaction().replace(R.id.Frame_Layout,aFragment).commit();
}

@Override
public void onClick(View v) {
    switch (v.getId()){
        case R.id.ShouYe_Btn:
            manager.beginTransaction().replace(R.id.Frame_Layout,aFragment).commit();
            break;
        case R.id.DingDan_Btn:
            manager.beginTransaction().replace(R.id.Frame_Layout,bFragment).commit();
            break;
    }
}

}

2.activity_main
<RelativeLayout 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"
tools:context=".MainActivity">

<LinearLayout
    android:id="@+id/Line"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true">

    <Button
        android:id="@+id/ShouYe_Btn"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:text="首页" />

    <Button
        android:id="@+id/DingDan_Btn"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:text="订单" />
</LinearLayout>

<FrameLayout
    android:id="@+id/Frame_Layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_above="@+id/Line"></FrameLayout>

/RelativeLayout>

3.AFragment recycleview Xrecycleview
public class AFragment extends Fragment implements IVIew {

private ArrayList<MyData1.ResultsBean> mList = new ArrayList<>();
private  ArrayList<MyData2.DataBean> mList2=new ArrayList<>();
private RecyclerView mRecy;
private MyAdapter1 myAdapter1;
private PresenterImpl presenter;
private String mUrl1 = "https://gank.io/api/data/%E7%A6%8F%E5%88%A9/10/1";
private String mUrl2 = "http://www.wanandroid.com/tools/mockapi/6523/restaurants_offset_0_limit_4";
private XRecyclerView mXrecy;
private XRecyAdapter xRecyAdapter;
private LinearLayoutManager manager1;

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    // Inflate the layout for this fragment
    View view = inflater.inflate(R.layout.fragment_a, null);
    initView(view);
    pageLogic();
    return view;
}

private void pageLogic() {
    presenter = new PresenterImpl(this);
    presenter.startRequest(mUrl1, null);
    presenter.startXrecy(mUrl2);
}


private void initView(View view) {
    mRecy = view.findViewById(R.id.Recy_View1);
    myAdapter1 = new MyAdapter1(mList, getContext());
    mRecy.setAdapter(myAdapter1);
    GridLayoutManager manager = new GridLayoutManager(getContext(), 2, GridLayoutManager.HORIZONTAL, false);
    mRecy.setLayoutManager(manager);
    //xrecy
    mXrecy = view.findViewById(R.id.Xrecy_View);
    xRecyAdapter = new XRecyAdapter(mList2,getContext());
    mXrecy.setAdapter(xRecyAdapter);
    //管理类
    LinearLayoutManager manager1= new LinearLayoutManager(getContext());
    mXrecy.setLayoutManager(manager1);
    //XRecyclerView监听事件
    mXrecy.setLoadingListener(new XRecyclerView.LoadingListener() {
        @Override
        public void onRefresh() {
            mList2.clear();
            presenter.startXrecy(mUrl2);
            mXrecy.refreshComplete();
        }

        @Override
        public void onLoadMore() {
            presenter.startXrecy(mUrl2);
            mXrecy.loadMoreComplete();
        }
    });

}


@Override
public void success(Object data, int type) {
    switch (type) {
        case 0:
            MyData1 myData1 = (MyData1) data;
            mList.addAll(myData1.getResults());
            myAdapter1.notifyDataSetChanged();
            break;
        case 1:
            MyData2 myData2= (MyData2) data;
            mList2.addAll(myData2.getData());
            xRecyAdapter.notifyDataSetChanged();
            break;
    }
}

@Override
public void error(Object error) {

}


//切换页面清空集合
@Override
public void onStop() {
    super.onStop();
    mList2.clear();
    mList.clear();
}

//防止内存泄漏
@Override
public void onDestroy() {
    super.onDestroy();
    presenter.onDetach();
}

}

4.fragment_a
<RelativeLayout 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"
tools:context=".fragment.AFragment">

<android.support.v7.widget.RecyclerView
    android:id="@+id/Recy_View1"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"></android.support.v7.widget.RecyclerView>

<com.jcodecraeer.xrecyclerview.XRecyclerView
    android:id="@+id/Xrecy_View"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_below="@+id/Recy_View1"></com.jcodecraeer.xrecyclerview.XRecyclerView>

/RelativeLayout>

5.GridLayoutManager 适配器

public class MyAdapter1 extends
RecyclerView.Adapter<MyAdapter1.ViewHolder> {

private ArrayList<MyData1.ResultsBean>mList;
private Context mContext;

public MyAdapter1(ArrayList<MyData1.ResultsBean> 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.item1, null);
    ViewHolder holder=new ViewHolder(view);
    return holder;
}

@Override
public void onBindViewHolder(@NonNull ViewHolder viewHolder, int i) {
    Glide.with(mContext).load(mList.get(i).getUrl()).into(viewHolder.img);
    viewHolder.tv.setText(mList.get(i).getWho());
}

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

public class ViewHolder extends RecyclerView.ViewHolder {
    private ImageView img;
    private TextView tv;
    public ViewHolder(@NonNull View itemView) {
        super(itemView);
        img=itemView.findViewById(R.id.Image1);
        tv=itemView.findViewById(R.id.Text_Tv1);
    }
}

}

适配器1布局
<LinearLayout xmlns:android=“http://schemas.android.com/apk/res/android”

android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageView
    android:id="@+id/Image1"
    android:layout_gravity="center_horizontal"
    android:src="@mipmap/ic_launcher_round"
    android:layout_width="150dp"
    android:layout_height="150dp" />
<TextView
    android:id="@+id/Text_Tv1"
    android:layout_gravity="center_horizontal"
    android:text="hahah"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" />

/LinearLayout>

6.XrecycleView 适配器 封装类的时候有一个属性改成布尔类型

public class XRecyAdapter extends RecyclerView.Adapter<XRecyAdapter.ViewHolde> {

private ArrayList<MyData2.DataBean> mList;
private Context mContext;

public XRecyAdapter(ArrayList<MyData2.DataBean> mList, Context mContext) {
    this.mList = mList;
    this.mContext = mContext;
}

@NonNull
@Override
public ViewHolde onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
    View view = View.inflate(mContext, R.layout.item2, null);
    ViewHolde holde=new ViewHolde(view);
    return holde;
}

@Override
public void onBindViewHolder(@NonNull ViewHolde viewHolde, int i) {
    viewHolde.tv.setText(mList.get(i).getName());
    Glide.with(mContext).load(mList.get(i).getPic_url()).into(viewHolde.img);
}

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

public class ViewHolde extends RecyclerView.ViewHolder {
    private ImageView img;
    private TextView tv;
    public ViewHolde(@NonNull View itemView) {
        super(itemView);
        img=itemView.findViewById(R.id.image2);
        tv=itemView.findViewById(R.id.Text2);
    }
}

}

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

android:orientation="horizontal" android:layout_width="wrap_content"
android:layout_height="wrap_content">

 <ImageView
android:src="@mipmap/ic_launcher_round"
android:id="@+id/image2"
android:layout_width="150dp"
android:layout_height="150dp" />
<TextView
    android:id="@+id/Text2"
    android:text="哈哈哈"
    android:layout_gravity="center_vertical"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" />

/LinearLayout>

7.BFragment 购物车逻辑
public class BFragment extends Fragment implements IVIew {

private String murl = "http://www.wanandroid.com/tools/mockapi/6523/restaurant-list";
private ArrayList<MyData3.DataBean> mList = new ArrayList<>();
private ExpandableListView mExpandView;
private GWCAdapter mAdapter;
private PresenterImpl presenter;
private CheckBox Check_All;
private TextView All_Price;
private TextView Go_To_JS;

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    // Inflate the layout for this fragment
    View view = inflater.inflate(R.layout.fragment_b, null);
    initView(view);
    pageLogic();
    return view;
}

private void pageLogic() {
    presenter = new PresenterImpl(this);
    presenter.startExpandView(murl);
}

private void initView(View view) {
    //底部按钮
    Check_All = view.findViewById(R.id.Check_All);
    All_Price = view.findViewById(R.id.All_Price);
    Go_To_JS = view.findViewById(R.id.Go_To_JS);


    mExpandView = view.findViewById(R.id.Expand_View);
    mAdapter = new GWCAdapter(mList, getContext());
    mExpandView.setAdapter(mAdapter);
    //去掉选中箭头
    mExpandView.setGroupIndicator(null);


    mAdapter.setCallBack(new GWCAdapter.AdapterCallback() {
        @Override
        public void setGroupCheck(int groupPosition) {
            boolean childAllCheck = mAdapter.isChildAllCheck(groupPosition);
            mAdapter.childAllCheck(groupPosition, !childAllCheck);
            mAdapter.notifyDataSetChanged();
            flushBottom();

        }

        @Override
        public void setChildCheck(int groupPosition, int childPosition) {
            //得到你要点击的商品Child是否是选中状态
            boolean childChecked = mAdapter.isChildChecked(groupPosition, childPosition);
            mAdapter.setChildChecked(groupPosition, childPosition, !childChecked);
            mAdapter.notifyDataSetChanged();
            flushBottom();

        }

        @Override
        public void setNumber(int groupPosition, int childPosition, int number) {
            mAdapter.notifyDataSetChanged();
            flushBottom();
        }
    });

    Check_All.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            boolean allGoods = mAdapter.isAllGoods();
            mAdapter.setAllGoodsIsChecked(!allGoods);
            mAdapter.notifyDataSetChanged();
            flushBottom();

        }
    });

}

@Override
public void success(Object data, int type) {
    switch (type) {
        case 2:
            MyData3 myData3 = (MyData3) data;
            mList.addAll(myData3.getData());
            mAdapter.notifyDataSetChanged();

            //首次进入加载数据
            for (int i = 0; i < mList.size(); i++) {
                mExpandView.expandGroup(i);
            }
            //点击组条目不能收缩
            mExpandView.setOnGroupClickListener(new ExpandableListView.OnGroupClickListener() {
                @Override
                public boolean onGroupClick(ExpandableListView parent, View v, int groupPosition, long id) {
                    return true;
                }
            });
            break;
    }
}

@Override
public void error(Object error) {

}

private void flushBottom() {
    boolean allGoods = mAdapter.isAllGoods();
    Check_All.setChecked(allGoods);

    float allGoodPrice = mAdapter.getAllGoodPrice();
    int allGoodNumber = mAdapter.getAllGoodNumber();
    All_Price.setText("价格：" + allGoodPrice);
    Go_To_JS.setText("去结算（" + allGoodNumber + ")");

}

@Override
public void onStop() {
    super.onStop();
    mList.clear();
}

}

布局 fragment_b
<RelativeLayout 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"
tools:context=".fragment.BFragment">
<RelativeLayout
    android:id="@+id/bottom_layout"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true">

    <CheckBox
        android:id="@+id/Check_All"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="全选" />

    <TextView
        android:id="@+id/All_Price"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:text="价格" />

    <TextView
        android:id="@+id/Go_To_JS"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:layout_centerVertical="true"
        android:text="去结算(0)" />
</RelativeLayout>


<ExpandableListView

   android:layout_above="@+id/bottom_layout"
   android:id="@+id/Expand_View"
   android:layout_width="match_parent"
   android:layout_height="match_parent"></ExpandableListView>

/RelativeLayout>

8.购物车 适配器
public class GWCAdapter extends BaseExpandableListAdapter {

private ArrayList<MyData3.DataBean> mList;
private Context mContext;

public GWCAdapter(ArrayList<MyData3.DataBean> mList, Context mContext) {
    this.mList = mList;
    this.mContext = mContext;
}

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

@Override
public int getChildrenCount(int groupPosition) {
    return mList.get(groupPosition).getSpus().size();
}

@Override
public Object getGroup(int groupPosition) {
    return null;
}

@Override
public Object getChild(int groupPosition, int childPosition) {
    return null;
}

@Override
public long getGroupId(int groupPosition) {
    return 0;
}

@Override
public long getChildId(int groupPosition, int childPosition) {
    return 0;
}

@Override
public boolean hasStableIds() {
    return false;
}

@Override
public View getGroupView(final int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) {
    GroupHolder holder = null;
    if (convertView == null) {
        convertView = View.inflate(mContext, R.layout.group_item, null);
        holder = new GroupHolder();
        holder.mGroupCheck = convertView.findViewById(R.id.Group_Check);
        holder.mGroupTv = convertView.findViewById(R.id.Group_Name);
        convertView.setTag(holder);
    } else {
        holder = (GroupHolder) convertView.getTag();
    }
    holder.mGroupTv.setText(mList.get(groupPosition).getName());

    //自动选中  当子条目全部选中 小组的checkbox自动会被选中
    boolean childAllCheck = isChildAllCheck(groupPosition);
    holder.mGroupCheck.setChecked(childAllCheck);

    //点击事件
    holder.mGroupCheck.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            if (adapterCallback != null) {
                adapterCallback.setGroupCheck(groupPosition);
            }
        }
    });

    return convertView;
}

@Override
public View getChildView(final int groupPosition, final int childPosition, boolean isLastChild, View convertView, ViewGroup parent) {
    ChildHolder cholder = null;
    if (convertView == null) {
        convertView = View.inflate(mContext, R.layout.child_item, null);
        cholder = new ChildHolder();
        cholder.mChildCheck = convertView.findViewById(R.id.Child_Check);
        cholder.mChildTitle = convertView.findViewById(R.id.Chile_Name);
        cholder.mChildPrice = convertView.findViewById(R.id.Chile_Price);
        cholder.mImage = convertView.findViewById(R.id.Child_Img);
        cholder.jiaJianView=convertView.findViewById(R.id.jiajian_text);
        convertView.setTag(cholder);
    } else {
        cholder = (ChildHolder) convertView.getTag();
    }
    MyData3.DataBean.SpusBean spusBean = mList.get(groupPosition).getSpus().get(childPosition);
    Glide.with(mContext).load(spusBean.getPic_url()).into(cholder.mImage);
    cholder.mChildPrice.setText(spusBean.getSkus().get(0).getPrice());
    cholder.mChildTitle.setText(spusBean.getName() + "");
    //商品数量赋值  后台  接口回调
    cholder.jiaJianView.setNum(spusBean.getPraise_num());

    //子checkxbox赋值
    cholder.mChildCheck.setChecked(spusBean.isChildChecked());
    //子  点击事件
    cholder.mChildCheck.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            if (adapterCallback != null) {
                adapterCallback.setChildCheck(groupPosition, childPosition);
            }
        }
    });

    //商品数量接口回调赋值  别忘了查找自定义组件
    cholder.jiaJianView.setOnChange(new JiaJianView.OnCountChange() {
        @Override
        public void setCount(int count) {

            MyData3.DataBean.SpusBean spusBean = mList.get(groupPosition).getSpus().get(childPosition);
            spusBean.setPraise_num(count);


            if (adapterCallback != null) {
                adapterCallback.setNumber(groupPosition,childPosition,count);
            }
        }
    });


    return convertView;
}

@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
    return false;
}

class GroupHolder {
    private CheckBox mGroupCheck;
    private TextView mGroupTv;
}

class ChildHolder {
    private CheckBox mChildCheck;
    private TextView mChildTitle;
    private ImageView mImage;
    private TextView mChildPrice;
    private JiaJianView jiaJianView;

}


//1.点击group的checkbox让child的全选中   只有全选  全不选功能
public void childAllCheck(int groupPosition, boolean isCheck) {
    MyData3.DataBean dataBean = mList.get(groupPosition);
    List<MyData3.DataBean.SpusBean> spus = dataBean.getSpus();
    for (int i = 0; i < spus.size(); i++) {
        MyData3.DataBean.SpusBean spusBean = spus.get(i);
        spusBean.setChildChecked(isCheck);
    }
}

//2.判断小组是否全部选中
public boolean isChildAllCheck(int groupPosition) {
    boolean boo = true;
    MyData3.DataBean dataBean = mList.get(groupPosition);
    List<MyData3.DataBean.SpusBean> spus = dataBean.getSpus();
    for (int i = 0; i < spus.size(); i++) {
        MyData3.DataBean.SpusBean spusBean = spus.get(i);
        //只要有一个没选中  点击checkbox就是全选功能
        if (!spusBean.isChildChecked()) {
            return false;
        }
    }
    return boo;
}

//3.点击child给他赋值
public void setChildChecked(int groupPosition, int childPosition, boolean isCheckBox) {
    MyData3.DataBean.SpusBean spusBean = mList.get(groupPosition).getSpus().get(childPosition);
    spusBean.setChildChecked(isCheckBox);

}

//4.查看当前商品是否被选中
public boolean isChildChecked(int groupPosition, int childPosition) {
    MyData3.DataBean.SpusBean spusBean = mList.get(groupPosition).getSpus().get(childPosition);
    if (spusBean.isChildChecked()) {
        return true;
    }
    return false;
}

//5.底部视图有一个全选按钮   得到所有条目的状态
public boolean isAllGoods() {
    boolean boo = true;
    for (int i = 0; i < mList.size(); i++) {
        MyData3.DataBean dataBean = mList.get(i);
        for (int j = 0; j < dataBean.getSpus().size(); j++) {
            MyData3.DataBean.SpusBean spusBean = dataBean.getSpus().get(j);
            if (!spusBean.isChildChecked()) {
                boo = false;
            }
        }
    }
    return boo;
}

//6.全选反选功能
public void setAllGoodsIsChecked(boolean isAllCheck) {
    for (int i = 0; i < mList.size(); i++) {
        MyData3.DataBean dataBean = mList.get(i);
        for (int j = 0; j < dataBean.getSpus().size(); j++) {
            MyData3.DataBean.SpusBean spusBean = dataBean.getSpus().get(j);
            spusBean.setChildChecked(isAllCheck);
        }
    }
}

//7.计算所有商品的价格
public float getAllGoodPrice() {
    float allPrice = 0;
    for (int i = 0; i < mList.size(); i++) {
        MyData3.DataBean dataBean = mList.get(i);
        for (int j = 0; j < dataBean.getSpus().size(); j++) {
            MyData3.DataBean.SpusBean spusBean = dataBean.getSpus().get(j);
            if (spusBean.isChildChecked()) {
                allPrice += spusBean.getPraise_num() * Float.parseFloat(spusBean.getSkus().get(0).getPrice());
            }
        }
    }
    return allPrice;
}

//8.计算所有的商品数量
public int getAllGoodNumber() {
    int allNumber = 0;
    for (int i = 0; i < mList.size(); i++) {
        MyData3.DataBean dataBean = mList.get(i);
        for (int j = 0; j < dataBean.getSpus().size(); j++) {
            MyData3.DataBean.SpusBean spusBean = dataBean.getSpus().get(j);
            if (spusBean.isChildChecked()) {
                allNumber += spusBean.getPraise_num();
            }
        }
    }
    return allNumber;
}



//接口回调  声明一个接口
public interface AdapterCallback {
    //小组
    void setGroupCheck(int groupPosition);

    //子条目
    void setChildCheck(int groupPosition, int childPosition);

    //点击加减按钮刷新
    void setNumber(int groupPosition, int childPosition, int number);
}

private AdapterCallback adapterCallback;

public void setCallBack(AdapterCallback madapterCallback) {
    this.adapterCallback = madapterCallback;
}

}

适配器 布局
1.group_item
<LinearLayout xmlns:android=“http://schemas.android.com/apk/res/android”

android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<CheckBox
    android:id="@+id/Group_Check"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:focusable="false"/>
<TextView
    android:id="@+id/Group_Name"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="hahah "/>

/LinearLayout>

2.child_item
<LinearLayout xmlns:android=“http://schemas.android.com/apk/res/android”

android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="120dp"
android:gravity="center_vertical">
<CheckBox
    android:layout_marginLeft="20dp"
    android:id="@+id/Child_Check"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    />
<ImageView
    android:layout_marginLeft="20dp"
    android:id="@+id/Child_Img"
    android:layout_width="80dp"
    android:layout_height="80dp"
    android:src="@mipmap/ic_launcher_round"/>
<LinearLayout
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_weight="1"
    android:orientation="vertical">
    <TextView
        android:text="hahah"
        android:id="@+id/Chile_Name"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />
    <TextView
        android:text="hahah"
        android:layout_marginTop="10dp"
        android:id="@+id/Chile_Price"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />
</LinearLayout>
<com.bawei.wangyaxiao.yuekaomoni.weight.JiaJianView
    android:id="@+id/jiajian_text"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"></com.bawei.wangyaxiao.yuekaomoni.weight.JiaJianView>

/LinearLayout>

9.自定义view 加减器
public class JiaJianView extends LinearLayout implements View.OnClickListener {

private TextView mDelete;
private TextView mAdd;
private TextView mShow;

private int mConut;

public JiaJianView(Context context, AttributeSet attrs) {
    super(context, attrs);
    LayoutInflater.from(context).inflate(R.layout.jiajianview, this);
    initView();
}

private void initView() {
    mDelete = findViewById(R.id.Delete_Tv);
    mAdd = findViewById(R.id.Add_Tv);
    mShow = findViewById(R.id.Show_Tv);

    mDelete.setOnClickListener(this);
    mAdd.setOnClickListener(this);

}

public void setNum(int number) {
    this.mConut = number;
    mShow.setText(number + "");
}

@Override
public void onClick(View v) {
    switch (v.getId()) {
        case R.id.Delete_Tv:
            if (mConut > 0) {
                mConut--;
                mShow.setText(mConut + "");
                if(mOnCountChange!=null){
                    mOnCountChange.setCount(mConut);
                }
            }else{
                Toast.makeText(getContext(), "商品已售空", Toast.LENGTH_SHORT).show();
            }
            break;
        case R.id.Add_Tv:
            mConut++;
            mShow.setText(mConut + "");
            if (mOnCountChange != null) {
                mOnCountChange.setCount(mConut);
            }

            break;
    }

}


//接口回调
public interface OnCountChange {
    void setCount(int count);
}

private OnCountChange mOnCountChange;

public void setOnChange(OnCountChange onCountChange) {
    this.mOnCountChange = onCountChange;
}

}

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

android:layout_width="wrap_content"
android:layout_height="30dp"
android:layout_gravity="center_vertical"
android:orientation="horizontal">

<TextView
    android:id="@+id/Delete_Tv"
    android:layout_width="10dp"
    android:layout_height="match_parent"
    android:layout_marginLeft="2dp"
    android:background="#ffffff"
    android:gravity="center"
    android:text="-"
    android:textSize="16sp" />

<TextView
    android:id="@+id/Show_Tv"
    android:layout_width="18dp"
    android:layout_height="match_parent"
    android:background="#ffffff"
    android:gravity="center"
    android:layout_weight="1"
    android:text="1" />

<TextView
    android:id="@+id/Add_Tv"
    android:layout_width="10dp"
    android:layout_height="match_parent"
    android:layout_marginLeft="2dp"
    android:background="#ffffff"
    android:gravity="center"
    android:text="+"
    android:textSize="16sp" />

/LinearLayout>

10.工具类

public class OkUtils {
private OkHttpClient okHttpClient;

private OkUtils() {
  //拦截器依赖:  implementation 'com.squareup.okhttp3:logging-interceptor:3.12.0'
    HttpLoggingInterceptor loggingInterceptor=new HttpLoggingInterceptor();
    okHttpClient = new OkHttpClient.Builder()
            .connectTimeout(20,TimeUnit.SECONDS)
            .callTimeout(20,TimeUnit.SECONDS)
            .readTimeout(20,TimeUnit.SECONDS)
            .addInterceptor(loggingInterceptor)
            .build();
}

public static OkUtils getInstance() {
    return OkHolder.okutils;
}

//私有静态方法
private static class OkHolder {
    //实例化
    private static final OkUtils okutils = new OkUtils();
}

public void getAsync(String url, Callback callback){
    Request request=new Request.Builder().url(url).build();
    okHttpClient.newCall(request).enqueue(callback);
}

}

11.model层

public class ModelImpl implements Model {

private Handler mHandler = new Handler() {
    @Override
    public void handleMessage(Message msg) {
        switch (msg.what) {
            case 0:
                String str = (String) msg.obj;
		/* 、   JSONObject jsonObject = new JSONObject();
	//          String string = jsonObject.optString("status");
                int status = jsonObject.optInt("status");
                if (status==200){

                }*/
                Gson gson = new Gson();
                MyData1 myData1 = gson.fromJson(str, MyData1.class);
                callBack.getData(myData1, 0);
                break;
            case 1:
                String str1 = (String) msg.obj;
                Gson gson1 = new Gson();
                MyData2 myData2 = gson1.fromJson(str1, MyData2.class);
                callBack.getData(myData2, 1);
                break;
            case 2:
                String str2 = (String) msg.obj;
                Gson gson2=new Gson();
                MyData3 myData3 = gson2.fromJson(str2, MyData3.class);
                callBack.getData(myData3,2);
                break;
        }


    }
};

private MyCallBack callBack;

@Override
public void setData(String url, String params, MyCallBack callBack) {
    this.callBack = callBack;
    OkUtils.getInstance().getAsync(url, new Callback() {
        @Override
        public void onFailure(Call call, IOException e) {

        }

        @Override
        public void onResponse(Call call, Response response) throws IOException {
            String string = response.body().string();
            mHandler.sendMessage(mHandler.obtainMessage(0, string));
        }
    });
}

@Override
public void setXrecydata(String url, MyCallBack callBack) {
    this.callBack =callBack;
    OkUtils.getInstance().getAsync(url, new Callback() {
        @Override
        public void onFailure(Call call, IOException e) {

        }

        @Override
        public void onResponse(Call call, Response response) throws IOException {
            String string = response.body().string();
            mHandler.sendMessage(mHandler.obtainMessage(1, string));
        }
    });
}

@Override
public void ExpandView(String url, MyCallBack callBack) {
   this.callBack =callBack;
    OkUtils.getInstance().getAsync(url, new Callback() {
        @Override
        public void onFailure(Call call, IOException e) {

        }

        @Override
        public void onResponse(Call call, Response response) throws IOException {
            String string = response.body().string();
            mHandler.sendMessage(mHandler.obtainMessage(2, string));
        }
    });
}

}

12.presenter 层
public class PresenterImpl implements IPresenter{

private IVIew ivIew;
private ModelImpl model;

public PresenterImpl(IVIew ivIew) {
    this.ivIew = ivIew;
    model=new ModelImpl();
}

@Override
public void startRequest(String url, String params) {
        model.setData(url, params, new MyCallBack() {
            @Override
            public void getData(Object data, int type) {
                ivIew.success(data,type);
            }

            @Override
            public void error(Object error) {
                ivIew.error(error);
            }
        });
}

@Override
public void startXrecy(String url) {
        model.setXrecydata(url, new MyCallBack() {
            @Override
            public void getData(Object data, int type) {
                ivIew.success(data,type);
            }

            @Override
            public void error(Object error) {
                ivIew.error(error);
            }
        });
}

@Override
public void startExpandView(String url) {
    model.ExpandView(url, new MyCallBack() {
        @Override
        public void getData(Object data, int type) {
            ivIew.success(data,type);
        }

        @Override
        public void error(Object error) {
            ivIew.error(error);
        }
    });
}


public void onDetach(){
    if(model!=null){
        model=null;
    }
    if(ivIew!=null){
        ivIew=null;
    }
}

}

13.baseactivity
public abstract class BaseActivity extends AppCompatActivity {

@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    init();
}
protected abstract int getLayout();
protected abstract void initView();
protected abstract void setOnClick();
protected abstract void pageLogic();
void init(){
    if(getLayout()!=0){
        setContentView(getLayout());
        initView();
        setOnClick();
        pageLogic();
    }else{
        throw new IllegalStateException("请加载布局");
    }
}

}

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