购物车订单实现

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原创最新推荐文章于 2026-06-22 14:30:06 发布 1.3k 阅读 AI 写同款· GEO 优化 ›

电商项目购物车及订单系统实现概述 购物车和订单是电商项目的核心，本文将简单介绍一下两者的实现。一、购物车功能实现 1.功能说明 1、商品加入购物车时，不是必须要求登录。 2、计算购物车中商品的总价。当商品数量发生变化时需要重新计算。 3、用户可以删除购物车中的商品。 4、用户下单后，删除购物车的功能。 2.功能分析 1、在用户不登陆的清空下也可以使用购物车，那么就需要把购物车信息放入cookie中。 2、可以把商品信息，存放到pojo中，然后序列化成json存入cookie中。 3、取商品信息可以从cookie中把json数据取出阅读详情

UTils工具类

APIService类

public interface APIService {
    @GET("product/getOrders?uid=71")
    Observable<OrderBean> order();
    @GET("product/updateOrder")
    Call<ResponseBody> update(@Query("uid") int uid,@Query("status") int status,@Query("orderId") int orderId);
}

MyInterceptor类

public class MyInterceptor implements Interceptor {
    @Override
    public Response intercept(Chain chain) throws IOException {

        Request request = chain.request();

        //&source=android这个是get带参数
        //?source=android 这个是只能get不带传参,还有就是post
        String url = request.url().toString()+"&source=android";

        Request request1 = request.newBuilder().url(url).build();

        Response response = chain.proceed(request1);
        return response;
    }
}

OkHttpUtils类

public class OkHttpUtils {

    private static OkHttpClient client = null ;

    public static OkHttpClient getInstance(){

        if(client == null){
            synchronized (OkHttpUtils.class){
                if(client == null){
                    client = new OkHttpClient.Builder()
                            .connectTimeout(20000, TimeUnit.SECONDS)
                            .writeTimeout(20000,TimeUnit.SECONDS)
                            .readTimeout(20000,TimeUnit.SECONDS)
                            //.addInterceptor(new MyInterceptor())
                            .build();
                }
            }
        }
        return client;
    }
}

RetrofitUtils类

public class RetrofitUtils {

    private static APIService service = null ;

    public static APIService getInstance(){
        if(service == null){
            synchronized (RetrofitUtils.class){

                Retrofit retrofit = new Retrofit.Builder()
                        .baseUrl("https://www.zhaoapi.cn/")
                        .addConverterFactory(GsonConverterFactory.create())
                        .addCallAdapterFactory(RxJavaCallAdapterFactory.create())
                        //.client(OkHttpUtils.getInstance())
                        .build();
                service = retrofit.create(APIService.class);
            }
        }
        return service;
    }

}

view层接口

public interface IOrderView {
void showOrder(List<OrderBean.DataBean> list);
}

model层方法

model接口

public interface IOrderModel {
    void showDate(Order order);
    interface Order{
        void complate(List<OrderBean.DataBean> list);
    }
}

model类

public class OrderModel implements IOrderModel {

    @Override
    public void showDate(final Order order) {
        RetrofitUtils.getInstance().order()
                .subscribeOn(Schedulers.io())
                .observeOn(AndroidSchedulers.mainThread())
                .subscribe(new Observer<OrderBean>() {
                    @Override
                    public void onCompleted() {

                    }

                    @Override
                    public void onError(Throwable e) {
                        Log.i("=========", "onError: "+e.toString());
                    }

                    @Override
                    public void onNext(OrderBean orderBean) {
                        List<OrderBean.DataBean> list = orderBean.getData();
                        order.complate(list);
                    }
                });
    }
}

Presenter层方法

IPresenter接口

public interface IPreesenter<T> {
void attach(T view);
void deach();
}

OrderPresenter类

public class OrderPresenter implements IPreesenter<IOrderView>{
    IOrderModel model;
    SoftReference<IOrderView> softReference;

    public OrderPresenter(IOrderView view) {
        attach(view);
        model = new OrderModel();
    }
    public void DateOrder(){
        model.showDate(new IOrderModel.Order() {
            @Override
            public void complate(List<OrderBean.DataBean> list) {
                softReference.get().showOrder(list);
            }
        });
    }
    @Override
    public void attach(IOrderView view) {
        softReference = new SoftReference<IOrderView>(view);
    }

    @Override
    public void deach() {
        softReference.clear();
    }
}

适配器

MyAdapter适配器

public class MyAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
    Context context;
    List<OrderBean.DataBean> list;
    OrderPresenter presenter;

    public MyAdapter(Context context, List<OrderBean.DataBean> list,OrderPresenter presenter) {
        this.context = context;
        this.list = list;
        this.presenter = presenter;
    }

    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(context).inflate(R.layout.qb_item,parent, false);;
        MyViewHolder holder = new MyViewHolder(view);
        return holder;
    }
    @Override
    public void onBindViewHolder(RecyclerView.ViewHolder holder, final int position) {
        ((MyViewHolder)holder).mTitleText.setText(list.get(position).getTitle());
        ((MyViewHolder)holder).mPriceText.setText("价格: "+list.get(position).getPrice());
        ((MyViewHolder)holder).mTameText.setText(list.get(position).getCreatetime());
        if (list.get(position).getStatus()==0){
            ((MyViewHolder) holder).mDaizhifuText.setText("待支付");
            ((MyViewHolder) holder).mDaizhifuText.setTextColor(Color.RED);
            ((MyViewHolder) holder).mBtnText.setText("取消订单");
            ((MyViewHolder) holder).mBtnText.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {

                    AlertDialog.Builder builder = new AlertDialog.Builder(context);
                    builder.setTitle("提示");
                    builder.setMessage("确定要取消订单吗?");
                    builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialog, int which) {
                            retrofit2.Call<ResponseBody> call = RetrofitUtils.getInstance().update(71,2,list.get(position).getOrderid());
                            call.enqueue(new retrofit2.Callback<ResponseBody>() {
                                @Override
                                public void onResponse(retrofit2.Call<ResponseBody> call, retrofit2.Response<ResponseBody> response) {
                                    presenter.DateOrder();
                                    notifyDataSetChanged();
                            }

                                @Override
                                public void onFailure(retrofit2.Call<ResponseBody> call, Throwable t) {

                                }
                            });
                        }
                    });

                    builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialog, int which) {

                        }
                    });
                    builder.show();

                }
            });

        }else if (list.get(position).getStatus()==1){
            ((MyViewHolder) holder).mDaizhifuText.setText("已支付");
            ((MyViewHolder) holder).mDaizhifuText.setTextColor(Color.BLACK);
            ((MyViewHolder) holder).mBtnText.setText("查看订单");
        }else if (list.get(position).getStatus()==2){
            ((MyViewHolder) holder).mDaizhifuText.setText("已取消");
            ((MyViewHolder) holder).mDaizhifuText.setTextColor(Color.BLACK);
            ((MyViewHolder) holder).mBtnText.setText("查看订单");
            ((MyViewHolder) holder).mBtnText.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {

                    AlertDialog.Builder builder = new AlertDialog.Builder(context);
                    builder.setTitle("提示");
                    builder.setMessage("确定循环利用吗?");
                    builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialog, int which) {
                            retrofit2.Call<ResponseBody> call = RetrofitUtils.getInstance().update(71,0,list.get(position).getOrderid());
                            call.enqueue(new retrofit2.Callback<ResponseBody>() {
                                @Override
                                public void onResponse(retrofit2.Call<ResponseBody> call, retrofit2.Response<ResponseBody> response) {
                                    presenter.DateOrder();
                                    notifyDataSetChanged();
                                }

                                @Override
                                public void onFailure(retrofit2.Call<ResponseBody> call, Throwable t) {

                                }
                            });
                        }
                    });

                    builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialog, int which) {

                        }
                    });
                    builder.show();
                }
            });

        }
    }

    @Override
    public int getItemCount() {
        if (list!=null){
            return list.size();
        }
        return 0;
    }

    class MyViewHolder extends RecyclerView.ViewHolder {
        TextView mTitleText;
        TextView mDaizhifuText;
        TextView mPriceText;
        TextView mTameText;
        TextView mBtnText;
        public MyViewHolder(View itemView) {
            super(itemView);
            mTitleText = (TextView) itemView.findViewById(R.id.text_title);
            mDaizhifuText = (TextView) itemView.findViewById(R.id.text_daizhifu);
            mPriceText = (TextView) itemView.findViewById(R.id.text_price);
            mTameText = (TextView) itemView.findViewById(R.id.text_tame);
            mBtnText = (TextView) itemView.findViewById(R.id.text_btn);
        }
    }
}

MyFrag适配器

public class MyFrag extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
    Context context;
    List<OrderBean.DataBean> list;
    OrderPresenter presenter;
    public MyFrag(Context context, List<OrderBean.DataBean> list, OrderPresenter presenter) {
        this.context = context;
        this.list = list;
        this.presenter = presenter;
    }
    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(context).inflate(R.layout.daizhifu,parent, false);;
        MyViewHolder holder = new MyViewHolder(view);
        return holder;
    }

    @Override
    public void onBindViewHolder(RecyclerView.ViewHolder holder, final int position) {
        if (list.get(position).getStatus()==0){
            ((MyViewHolder)holder).ll.setVisibility(View.VISIBLE);
            ((MyViewHolder)holder).mTitleText.setText(list.get(position).getTitle());
            ((MyViewHolder)holder).mPriceText.setText("价格: "+list.get(position).getPrice());
            ((MyViewHolder)holder).mTameText.setText(list.get(position).getCreatetime());
            ((MyViewHolder) holder).mDaizhifuText.setText("待支付");
            ((MyViewHolder) holder).mDaizhifuText.setTextColor(Color.RED);
            ((MyViewHolder) holder).mBtnText.setText("取消订单");
            ((MyViewHolder) holder).mBtnText.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {

                    AlertDialog.Builder builder = new AlertDialog.Builder(context);
                    builder.setTitle("提示");
                    builder.setMessage("确定要取消订单吗?");
                    builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialog, int which) {
                            retrofit2.Call<ResponseBody> call = RetrofitUtils.getInstance().update(71,2,list.get(position).getOrderid());
                            call.enqueue(new retrofit2.Callback<ResponseBody>() {
                                @Override
                                public void onResponse(retrofit2.Call<ResponseBody> call, retrofit2.Response<ResponseBody> response) {
                                    presenter.DateOrder();
                                    notifyDataSetChanged();
                                }

                                @Override
                                public void onFailure(retrofit2.Call<ResponseBody> call, Throwable t) {

                                }
                            });
                        }
                    });

                    builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialog, int which) {

                        }
                    });
                    builder.show();

                }
            });
        }
    }

    @Override
    public int getItemCount() {
        if (list!=null){
            return list.size();
        }
        return 0;
    }
    class MyViewHolder extends RecyclerView.ViewHolder {
        TextView mTitleText;
        TextView mDaizhifuText;
        TextView mPriceText;
        TextView mTameText;
        TextView mBtnText;
        LinearLayout ll;
        public MyViewHolder(View itemView) {
            super(itemView);
            mTitleText = (TextView) itemView.findViewById(R.id.text_title);
            mDaizhifuText = (TextView) itemView.findViewById(R.id.text_daizhifu);
            mPriceText = (TextView) itemView.findViewById(R.id.text_price);
            mTameText = (TextView) itemView.findViewById(R.id.text_tame);
            mBtnText = (TextView) itemView.findViewById(R.id.text_btn);
            ll = itemView.findViewById(R.id.ll);
        }
    }
}

MyQx适配器

public class MyQx extends RecyclerView.Adapter<RecyclerView.ViewHolder>{
    Context context;
    List<OrderBean.DataBean> list;
    OrderPresenter presenter;
    public MyQx(Context context, List<OrderBean.DataBean> list,OrderPresenter presenter) {
        this.context = context;
        this.list = list;
        this.presenter = presenter;
    }

    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(context).inflate(R.layout.qx_item,parent, false);;
        MyViewHolder holder = new MyViewHolder(view);
        return holder;
    }

    @Override
    public void onBindViewHolder(RecyclerView.ViewHolder holder, final int position) {
        if (list.get(position).getStatus()==2){
            ((MyViewHolder)holder).ll.setVisibility(View.VISIBLE);
            ((MyViewHolder)holder).mTitleText.setText(list.get(position).getTitle());
            ((MyViewHolder)holder).mPriceText.setText("价格: "+list.get(position).getPrice());
            ((MyViewHolder)holder).mTameText.setText(list.get(position).getCreatetime());
            ((MyViewHolder) holder).mDaizhifuText.setText("已取消");
            ((MyViewHolder) holder).mDaizhifuText.setTextColor(Color.BLACK);
            ((MyViewHolder) holder).mBtnText.setText("查看订单");
            ((MyViewHolder) holder).mBtnText.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {

                    AlertDialog.Builder builder = new AlertDialog.Builder(context);
                    builder.setTitle("提示");
                    builder.setMessage("确定循环利用吗?");
                    builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialog, int which) {
                            retrofit2.Call<ResponseBody> call = RetrofitUtils.getInstance().update(71,0,list.get(position).getOrderid());
                            call.enqueue(new retrofit2.Callback<ResponseBody>() {
                                @Override
                                public void onResponse(retrofit2.Call<ResponseBody> call, retrofit2.Response<ResponseBody> response) {
                                    presenter.DateOrder();
                                    notifyDataSetChanged();
                                }

                                @Override
                                public void onFailure(retrofit2.Call<ResponseBody> call, Throwable t) {

                                }
                            });
                        }
                    });

                    builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialog, int which) {

                        }
                    });
                    builder.show();
                }
            });

        }
    }

    @Override
    public int getItemCount() {
        if (list != null){
            return list.size();
        }
        return 0;
    }
    class MyViewHolder extends RecyclerView.ViewHolder {
        TextView mTitleText;
        TextView mDaizhifuText;
        TextView mPriceText;
        TextView mTameText;
        TextView mBtnText;
        LinearLayout ll;
        public MyViewHolder(View itemView) {
            super(itemView);
            mTitleText = (TextView) itemView.findViewById(R.id.text_title);
            mDaizhifuText = (TextView) itemView.findViewById(R.id.text_daizhifu);
            mPriceText = (TextView) itemView.findViewById(R.id.text_price);
            mTameText = (TextView) itemView.findViewById(R.id.text_tame);
            mBtnText = (TextView) itemView.findViewById(R.id.text_btn);
            ll = itemView.findViewById(R.id.ll);
        }
    }
}

MyZf适配器

public class MyZf extends RecyclerView.Adapter<RecyclerView.ViewHolder>{
    Context context;
    List<OrderBean.DataBean> list;
    private List<String> stringList;

    public MyZf(Context context, List<OrderBean.DataBean> list) {
        this.context = context;
        this.list = list;

    }
    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(context).inflate(R.layout.yizhifu,parent, false);;
        MyViewHolder holder = new MyViewHolder(view);
        return holder;
    }

    @Override
    public void onBindViewHolder(RecyclerView.ViewHolder holder, final int position) {
        stringList = new ArrayList<>();
        if (list.get(position).getStatus()==1){

//            stringList.add(list.get(position).getTitle());
//
//            System.out.println("****"+stringList.size());

            ((MyViewHolder)holder).ll.setVisibility(View.VISIBLE);
            ((MyViewHolder)holder).mTitleText.setText(list.get(position).getTitle());
            ((MyViewHolder)holder).mPriceText.setText("价格: "+list.get(position).getPrice());
            ((MyViewHolder)holder).mTameText.setText(list.get(position).getCreatetime());
            ((MyViewHolder) holder).mDaizhifuText.setText("已支付");
            ((MyViewHolder) holder).mDaizhifuText.setTextColor(Color.BLACK);
            ((MyViewHolder) holder).mBtnText.setText("查看订单");
        }
    }

    @Override
    public int getItemCount() {
        if (list != null){
            return list.size();
        }
        return 0;
    }
    class MyViewHolder extends RecyclerView.ViewHolder {
        TextView mTitleText;
        TextView mDaizhifuText;
        TextView mPriceText;
        TextView mTameText;
        TextView mBtnText;
        LinearLayout ll;
        public MyViewHolder(View itemView) {
            super(itemView);
            mTitleText = (TextView) itemView.findViewById(R.id.text_title);
            mDaizhifuText = (TextView) itemView.findViewById(R.id.text_daizhifu);
            mPriceText = (TextView) itemView.findViewById(R.id.text_price);
            mTameText = (TextView) itemView.findViewById(R.id.text_tame);
            mBtnText = (TextView) itemView.findViewById(R.id.text_btn);
            ll = itemView.findViewById(R.id.ll);
        }
    }
}

Fragment基类

public abstract class BaseFragment<T extends IPreesenter> extends Fragment {
    T presenter;

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        createpresenter();
        return super.onCreateView(inflater, container, savedInstanceState);
    }

    protected abstract void createpresenter();

    @Override
    public void onDestroy() {
        super.onDestroy();
        if (presenter != null){
            presenter.deach();
        }
    }
}

Fragment1类

public class Fragment_1 extends BaseFragment<OrderPresenter> implements IOrderView {
    private RecyclerView mRecy;

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        super.onCreateView(inflater, container, savedInstanceState);
        View view = View.inflate(getActivity(), R.layout.fragment_1, null);
        mRecy = (RecyclerView)view.findViewById(R.id.recy);
        presenter.DateOrder();
        return view;
    }

    @Override
    public void showOrder(List<OrderBean.DataBean> list) {
        LinearLayoutManager mgs = new LinearLayoutManager(getActivity());
        mRecy.setLayoutManager(mgs);
        MyAdapter adapter = new MyAdapter(getActivity(),list,presenter);
        mRecy.setAdapter(adapter);
    }

    @Override
    protected void createpresenter() {
        presenter = new OrderPresenter(this);
    }
}

Fragment2类

public class Fragment_2 extends BaseFragment<OrderPresenter> implements IOrderView {
    RecyclerView recy;
    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        super.onCreateView(inflater, container, savedInstanceState);
        View view = View.inflate(getActivity(), R.layout.fragment_2,null);
        recy = view.findViewById(R.id.recy);
        presenter.DateOrder();
        return view;
    }

    @Override
    protected void createpresenter() {
        presenter = new OrderPresenter(this);
    }

    @Override
    public void showOrder(List<OrderBean.DataBean> list) {
        LinearLayoutManager mgs = new LinearLayoutManager(getActivity());
        recy.setLayoutManager(mgs);
        MyFrag adapter = new MyFrag(getActivity(),list,presenter);
        recy.setAdapter(adapter);
    }
}

Fragment3类

public class Fragment_3 extends BaseFragment<OrderPresenter> implements IOrderView {
    RecyclerView recyclerView;
    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        super.onCreateView(inflater, container, savedInstanceState);
        View view = View.inflate(getActivity(), R.layout.fragment_3,null);
        recyclerView = view.findViewById(R.id.re);
        presenter.DateOrder();
        return view;
    }

    @Override
    public void showOrder(List<OrderBean.DataBean> list) {
        LinearLayoutManager mgs = new LinearLayoutManager(getActivity());
        recyclerView.setLayoutManager(mgs);
        MyQx adapter = new MyQx(getActivity(),list,presenter);
        recyclerView.setAdapter(adapter);
    }

    @Override
    protected void createpresenter() {
        presenter = new OrderPresenter(this);
    }
}

Fragment4类

public class Fragment_4 extends BaseFragment<OrderPresenter> implements IOrderView {
    RecyclerView rv;
    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        super.onCreateView(inflater, container, savedInstanceState);
        View view = View.inflate(getActivity(), R.layout.fragment_4,null);
        presenter.DateOrder();
        rv = view.findViewById(R.id.rv);
        return view;
    }

    @Override
    protected void createpresenter() {
        presenter = new OrderPresenter(this);
    }

    @Override
    public void showOrder(List<OrderBean.DataBean> list) {
        LinearLayoutManager mgs = new LinearLayoutManager(getActivity());
        rv.setLayoutManager(mgs);
        MyZf adapter = new MyZf(getActivity(),list);
        rv.setAdapter(adapter);
    }
}

MainAtivity主方法类

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

    private RadioGroup radioGroup;
    private RadioButton button_1;
    private RadioButton button_2;
    private RadioButton button_3;
    private RadioButton button_4;
    private Fragment_1 fragment_1;
    private Fragment_2 fragment_2;
    private Fragment_3 fragment_3;
    private Fragment_4 fragment_4;
    private List<Fragment> list;
    private FrameLayout frameLayout;
    private ImageView mBtnImage;
    private View item_popup;
    private PopupWindow popupWindow;
    private View view;
    private TextView btn_daizhi;
    private TextView btn_yizhi;
    private TextView btn_yiqu;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initView();
    }

    private void initView() {
        frameLayout = (FrameLayout) findViewById(R.id.framelayout);
        radioGroup = (RadioGroup) findViewById(R.id.radioGroup);

        //找到四个按钮
        button_1 = (RadioButton) findViewById(R.id.button_1);
        button_2 = (RadioButton) findViewById(R.id.button_2);
        button_3 = (RadioButton) findViewById(R.id.button_3);
        button_4 = (RadioButton) findViewById(R.id.button_4);

        //创建Fragment对象及集合
        fragment_1 = new Fragment_1();
        fragment_2 = new Fragment_2();
        fragment_3 = new Fragment_3();
        fragment_4 = new Fragment_4();

        //将Fragment对象添加到list中
        list = new ArrayList<>();
        list.add(fragment_1);
        list.add(fragment_2);
        list.add(fragment_3);
        list.add(fragment_4);

        //设置RadioGroup开始时设置的按钮，设置第一个按钮为默认值
        radioGroup.check(R.id.button_1);

        //设置按钮点击监听
        button_1.setOnClickListener(this);
        button_2.setOnClickListener(this);
        button_3.setOnClickListener(this);
        button_4.setOnClickListener(this);

        //初始时向容器中添加第一个Fragment对象
        addFragment(fragment_1);

        mBtnImage = (ImageView) findViewById(R.id.image_btn);
        mBtnImage.setOnClickListener(this);
        item_popup = View.inflate(this, R.layout.item_popup, null);
        view = View.inflate(this, R.layout.activity_main, null);
        popupWindow = new PopupWindow(item_popup, ActionBar.LayoutParams.WRAP_CONTENT,ActionBar.LayoutParams.WRAP_CONTENT);
        popupWindow.setTouchable(true);

        btn_daizhi = item_popup.findViewById(R.id.btn_daizhi);
        btn_yizhi = item_popup.findViewById(R.id.btn_yizhi);
        btn_yiqu = item_popup.findViewById(R.id.btn_yiqu);
        btn_daizhi.setOnClickListener(this);
        btn_yizhi.setOnClickListener(this);
        btn_yiqu.setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        //我们根据参数的id区别不同按钮
        //不同按钮对应着不同的Fragment对象页面
        switch (v.getId()) {
            case R.id.button_1:
                addFragment(fragment_1);
                break;
            case R.id.button_2:
                addFragment(fragment_2);
                break;
            case R.id.button_3:
                addFragment(fragment_3);
                break;
            case R.id.button_4:
                addFragment(fragment_4);
                break;
            case R.id.image_btn:
                popupWindow.showAsDropDown(mBtnImage);
                break;
            case R.id.btn_daizhi:
                addFragment(fragment_2);
                popupWindow.dismiss();
                break;
            case R.id.btn_yizhi:
                addFragment(fragment_4);
                popupWindow.dismiss();
                break;
            case R.id.btn_yiqu:
                addFragment(fragment_3);
                popupWindow.dismiss();
                break;
            default:
                break;
        }

    }

    //向Activity中添加Fragment的方法
    public void addFragment(Fragment fragment) {

        //获得Fragment管理器
        FragmentManager fragmentManager = getSupportFragmentManager();
        //使用管理器开启事务
        FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
        //使用事务替换Fragment容器中Fragment对象
        fragmentTransaction.replace(R.id.framelayout, fragment);
        //提交事务，否则事务不生效
        fragmentTransaction.commit();
    }
}