一级列表展示购物车

于 2017-11-23 08:33:00 发布
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CC 4.0 BY-SA版权
文章标签： 移动开发
原文链接：http://www.cnblogs.com/wsq110/p/7883053.html

依赖包

 compile 'com.android.support:appcompat-v7:24.2.1'
    testCompile 'junit:junit:4.12'
    compile 'com.android.support.constraint:constraint-layout:1.0.2'
    compile 'com.squareup.okhttp3:okhttp:3.9.0'
    compile 'com.squareup.okhttp3:logging-interceptor:3.9.0'
    compile 'com.google.code.gson:gson:2.8.2'
    compile 'com.nostra13.universalimageloader:universal-image-loader:1.9.5'
    compile 'org.greenrobot:eventbus:3.1.1'
    compile 'com.android.support:recyclerview-v7:24.2.1'

布局///主布局

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

    <TextView
        android:layout_width="match_parent"
        android:layout_height="40dp"
        android:background="#990000ff"
        android:gravity="center"
        android:text="购物车"
        android:textColor="#ff3660"
        android:textSize="25sp" />

    <android.support.v7.widget.RecyclerView
        android:id="@+id/rv"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1"/>

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:layout_alignParentBottom="true"
        android:background="@android:color/white"
        android:gravity="center_vertical">

        <CheckBox
            android:id="@+id/checkbox2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerVertical="true"
            android:layout_marginLeft="10dp"
            android:focusable="false" />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="50dp"
            android:layout_centerVertical="true"
            android:layout_marginLeft="10dp"
            android:layout_toRightOf="@+id/checkbox2"
            android:gravity="center_vertical"
            android:text="全选"
            android:textSize="20sp" />

        <LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentRight="true"
            android:orientation="horizontal">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginLeft="10dp"
                android:text="合计 ：" />


            <TextView
                android:id="@+id/tv_price"
                android:layout_width="wrap_content"
                android:layout_height="50dp"
                android:layout_marginLeft="10dp"
                android:paddingRight="10dp"
                android:text="0"
                android:textColor="@android:color/holo_red_light" />


            <TextView
                android:id="@+id/tv_num"
                android:layout_width="wrap_content"
                android:layout_height="50dp"
                android:background="@android:color/holo_red_dark"
                android:gravity="center"
                android:padding="10dp"
                android:text="结算(0)"
                android:textColor="@android:color/white" />
        </LinearLayout>
    </RelativeLayout>
</LinearLayout>

　child.xml注意自定义View

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@android:color/darker_gray"
    android:gravity="center_vertical"
    android:orientation="horizontal">

    <CheckBox

        android:id="@+id/cb_child"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="30dp"
        android:layout_marginLeft="40dp"
        android:layout_marginTop="30dp"
        android:focusable="false" />

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="vertical">

        <TextView
            android:id="@+id/tv_tel"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="20dp"
            android:text="iphone6" />

        <TextView
            android:id="@+id/tv_content"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="20dp"
            android:text="什么手机" />

        <TextView
            android:id="@+id/tv_time"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="20dp"
            android:text="2016-12-10" />
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:orientation="vertical">

        <TextView
            android:id="@+id/tv_price"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"

            android:text="¥3000.00" />

        <bwie.com.gwc2.view.MyView
            android:id="@+id/mv"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />
    </LinearLayout>

    <TextView
        android:id="@+id/tv_del"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="删除" />
</LinearLayout>

　　myview.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:gravity="center_vertical"
    android:orientation="horizontal">


    <ImageView
        android:id="@+id/iv_del"
        android:layout_width="20dp"
        android:layout_height="20dp"
        android:src="@drawable/shopcart_minus_grey" />

    <TextView
        android:id="@+id/tv_num"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="5dp"
        android:background="@drawable/shopcart_add_btn"
        android:paddingBottom="2dp"
        android:paddingLeft="20dp"
        android:paddingRight="20dp"
        android:paddingTop="2dp"
        android:text="1" />

    <ImageView
        android:id="@+id/iv_add"
        android:layout_width="20dp"
        android:layout_height="20dp"
        android:layout_marginLeft="5dp"
        android:src="@drawable/shopcart_add_red" />

</LinearLayout>

　　presenter  GoodsPresenter

public class GoodsPresenter {
    private IMainActivity iMainActivity;
    private IGoodsModel iGoodsModel;
    public GoodsPresenter(IMainActivity iMainActivity){
        iGoodsModel = new GoodsModel();
        this.iMainActivity = iMainActivity;

    }
    public void getGoods(){
        iGoodsModel.getGoods(new OnNetLisenter<GoodsBean>() {
            @Override
            public void onSuccess(GoodsBean goodsBean) {
                List<GoodsBean.DataBean.DatasBean> list = new ArrayList<GoodsBean.DataBean.DatasBean>();
                List<GoodsBean.DataBean> data = goodsBean.getData();
                for(int i = 0; i < data.size(); i++){
                    List<GoodsBean.DataBean.DatasBean> datas = data.get(i).getDatas();
                        list.addAll(datas);

                }
                iMainActivity.showList(list);
            }

            @Override
            public void onFailure(Exception e) {

            }
        });
    }

}

　　MyAdapter

public class MyAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
    private Context context;
    private List<GoodsBean.DataBean.DatasBean> list;

    public MyAdapter(Context context, List<GoodsBean.DataBean.DatasBean> list) {
        this.context = context;
        this.list = list;
    }

    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(context).inflate(R.layout.child, parent, false);

        return new MyViewHolder(view);
    }

    @Override
    public void onBindViewHolder(RecyclerView.ViewHolder holder, final int position) {
        final GoodsBean.DataBean.DatasBean datasBean = list.get(position);
        final MyViewHolder myViewHolder = (MyViewHolder) holder;
        myViewHolder.cbChild.setChecked(datasBean.isChecked());
        myViewHolder.tv_tel.setText(datasBean.getType_name());
        myViewHolder.tv_content.setText(datasBean.getMsg());
        myViewHolder.tv_time.setText(datasBean.getAdd_time());
        myViewHolder.tv_price.setText(datasBean.getPrice()+"");
        myViewHolder.myView.setNum(datasBean.getNum()+"");
        myViewHolder.cbChild.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                datasBean.setChecked(myViewHolder.cbChild.isChecked());
                PriceAndCountEvent compute = compute();
                EventBus.getDefault().post(compute);
                if(myViewHolder.cbChild.isChecked()){
                    if(isAllCbSelected()){
                        changeAllCbState(true);
                    }

                }else {
                    changeAllCbState(false);
                }
                notifyDataSetChanged();
            }
        });
        //增加数量
        myViewHolder.myView.setAddClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                int num = myViewHolder.myView.getNum();
                num++;
                datasBean.setNum(num);
                if (myViewHolder.cbChild.isChecked()){
                    EventBus.getDefault().post(compute());
                }
                notifyDataSetChanged();
            }
        });
        //减少数量
        myViewHolder.myView.setDelClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                int num = myViewHolder.myView.getNum();
                if(num==1){
                    return;
                }
                num--;
                datasBean.setNum(num);
                if (myViewHolder.cbChild.isChecked()){
                    EventBus.getDefault().post(compute());
                }
                notifyDataSetChanged();
            }
        });
        //删除
        myViewHolder.tv_del.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                list.remove(position);
                EventBus.getDefault().post(compute());
                notifyDataSetChanged();
            }
        });
    }
    /**
     * 改变全选的状态
     * @param flag
     */
    public void changeAllCbState(boolean flag){
        MessageEvent messageEvent = new MessageEvent();
        messageEvent.setChecked(flag);
        EventBus.getDefault().post(messageEvent);
    }
    public  boolean isAllCbSelected(){
        for (int i = 0;i<list.size();i++){
            GoodsBean.DataBean.DatasBean datasBean = list.get(i);
            if(!datasBean.isChecked()){
                return false;
            }
        }
        return true;
    }

    @Override
    public int getItemCount() {
        return list.size();
    }
    class MyViewHolder extends RecyclerView.ViewHolder{


        private final CheckBox cbChild;
        private  TextView tv_tel;
        private  TextView tv_content;
        private  TextView tv_time;
        private  TextView tv_price;
        private MyView myView;
        private  TextView tv_del;

        public MyViewHolder(View itemView) {
            super(itemView);
             cbChild = (CheckBox) itemView.findViewById(R.id.cb_child);
            tv_tel = (TextView) itemView.findViewById(R.id.tv_tel);
            tv_content = (TextView) itemView.findViewById(R.id.tv_content);
            tv_time = (TextView) itemView.findViewById(R.id.tv_time);
            tv_price = (TextView) itemView.findViewById(R.id.tv_price);
            tv_del = (TextView) itemView.findViewById(R.id.tv_del);
            myView = (MyView) itemView.findViewById(R.id.mv);
        }
    }
    /*
    计算数量的方法
     */
    private PriceAndCountEvent compute(){
        int price = 0;
        int count = 0;
        for (int i = 0;i<list.size();i++){
            GoodsBean.DataBean.DatasBean datasBean = list.get(i);
            if(datasBean.isChecked()){
                price+=datasBean.getPrice()*datasBean.getNum();
                count+=datasBean.getNum();
            }
        }
        PriceAndCountEvent priceAndCountEvent = new PriceAndCountEvent();
        priceAndCountEvent.setPrice(price);
        priceAndCountEvent.setCount(count);
        return priceAndCountEvent;
    }
    /**
     * 全选
     */
    public void allSelect(boolean flag){
        for (int i=0;i<list.size();i++){
            GoodsBean.DataBean.DatasBean datasBean = list.get(i);
            datasBean.setChecked(flag);
        }
        EventBus.getDefault().post(compute());
        notifyDataSetChanged();
    }
}

　　MyView

public class MyView extends LinearLayout{


    private ImageView iv_add;
    private ImageView iv_del;
    private TextView tv_num;

    public MyView(Context context) {
        this(context,null);
    }

    public MyView(Context context, AttributeSet attrs) {
        super(context, attrs);
        View view = LayoutInflater.from(context).inflate(R.layout.myview, this);
        iv_add = (ImageView) findViewById(R.id.iv_add);
        iv_del = (ImageView) findViewById(R.id.iv_del);
        tv_num = (TextView) findViewById(R.id.tv_num);
    }

    public void setAddClickListener(OnClickListener onClickListener){
        iv_add.setOnClickListener(onClickListener);
    }
    public void setDelClickListener(OnClickListener onClickListener){
        iv_del.setOnClickListener(onClickListener);
    }
    public void setNum(String num){
        tv_num.setText(num);
    }
    public int getNum(){
        String num = tv_num.getText().toString();
        return Integer.parseInt(num);
    }

}

　MainActivity

public class MainActivity extends AppCompatActivity implements IMainActivity{

    private RecyclerView mRv;
    private CheckBox mCheckbox2;
    /**
     * 0
     */
    private TextView mTvPrice;
    /**
     * 结算(0)
     */
    private TextView mTvNum;
    private GoodsPresenter goodsPresenter;
    private MyAdapter myAdapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        EventBus.getDefault().register(this);
        goodsPresenter = new GoodsPresenter(this);
        initView();
        mRv.setLayoutManager(new LinearLayoutManager(this));

        goodsPresenter.getGoods();
        mCheckbox2.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                myAdapter.allSelect(mCheckbox2.isChecked());
            }
        });
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        EventBus.getDefault().unregister(this);
    }

    @Subscribe
    public void onMessageEvent(MessageEvent event){
        mCheckbox2.setChecked(event.isChecked());
    }
    @Subscribe
    public void onMessageEvent(PriceAndCountEvent event){
        mTvNum.setText("结算("+event.getCount()+")");
        mTvPrice.setText(event.getPrice()+"");
    }
    private void initView() {
        mRv = (RecyclerView) findViewById(R.id.rv);
        mCheckbox2 = (CheckBox) findViewById(R.id.checkbox2);
        mTvPrice = (TextView) findViewById(R.id.tv_price);
        mTvNum = (TextView) findViewById(R.id.tv_num);
    }

    @Override
    public void showList(List<GoodsBean.DataBean.DatasBean> list) {
        myAdapter = new MyAdapter(this, list);
        mRv.setAdapter(myAdapter);
    }
}

　　M层  GoodsModel

public class GoodsModel implements IGoodsModel{
   private Handler handler = new Handler(Looper.getMainLooper());

   public void getGoods(final OnNetLisenter<GoodsBean> onNetLisenter){
       Httputils.getHttputils().doGet(Api.url, new Callback() {
           @Override
           public void onFailure(Call call, final IOException e) {
               handler.post(new Runnable() {
                   @Override
                   public void run() {
                       onNetLisenter.onFailure(e);
                   }
               });

           }

           @Override
           public void onResponse(Call call, Response response) throws IOException {
               String string = response.body().string();
               final GoodsBean goodsBean = new Gson().fromJson(string, GoodsBean.class);
               handler.post(new Runnable() {
                   @Override
                   public void run() {
                       onNetLisenter.onSuccess(goodsBean);
                   }
               });
           }
       });

   }
}

　　

 

　

 

转载于:https://www.cnblogs.com/wsq110/p/7883053.html

android1986
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