手把手教你做一个安卓点餐系统

最近有小伙伴要学习安卓，今天给大家展示一个安卓系统的开发，希望能帮到你学习！

传统的点餐方式有：
1） 手工点餐模式。在这种模式下，流程简单，店员很快知道要点什么，但随着点餐人数多，就会让店家分不清谁点的是什么，出错概率就增加。

2） 店员手持PDA等触摸屏掌上电脑进行点餐。这种模式虽然减少了传统手工点餐的纸质浪费，但也需要店员一个一个记录，在这过程中也消耗了部分时间。而且这种模式需要添加基站设备，设备支出成本也是极高。

3） 少数店家用APP或公众号来点餐。目前已经有少数商家用APP来实现点餐，但大多数还是用前两种来点餐。而且现阶段的APP点餐系统发展还不完善，还有待提高。

一，开发需求和技术栈

登录模块设计、点菜模块、付款模块、菜品浏览模块、订单模块、用户管理模块、分享动态模块等等。

技术栈：Android、Java、Mysql、SpringBoot、Mysql

二，系统的界面

三，系统的核心代码

//作者：小孟 v：jishulearn
@Controller
@RequestMapping("/api")
public class ApiController {
    
    
    @Autowired
    private UsersService userService;
    @Autowired
    private ProductsService booksService;
    @Autowired
    private ShopsService bookshopService;
    @Autowired
    private ShopcartService shopcartService;
    @Autowired
    private ShoporderService orderService;
    @Autowired
    private PinglunService pinglunService;
    @Autowired
    private DizhiService dizhiService;
    @Autowired
    private PengyouquanService pengyouquanService;


    @PostMapping("/userlogin")
    @ResponseBody
    public JsonResult login(String username, String password) {
    
    
        if (username == null || username.trim().isEmpty()) return JsonResult.error("请输入账号");
        if (password == null || password.trim().isEmpty()) return JsonResult.error("请输入密码");
        Users user = userService.getOne(new QueryWrapper<Users>().eq("username",username).eq("password",password));
        if(user != null){
    
    
            return JsonResult.ok("登录成功").put("username",username).put("password",password).put("id",user.getId());
        }else{
    
    
            return JsonResult.error("用户名或密码错误");
        }
    }

    @PostMapping("/userreg")
    @ResponseBody
    public JsonResult reg(String username1, String password1,String nickname1) {
    
    
        if (username1 == null || username1.trim().isEmpty()) return JsonResult.error("请输入账号");
        if (password1 == null || password1.trim().isEmpty()) return JsonResult.error("请输入密码");
        Users user1 = new Users();
        user1.setUsername(username1);
        user1.setNickname(nickname1);
        user1.setPassword(password1);
        if (userService.save(user1)) {
    
    
            return JsonResult.ok("注册成功");
        }
        return JsonResult.error("注册失败");
    }

    @PostMapping("/userupdate")
    @ResponseBody
    public JsonResult update(Integer id,String username2, String password2,String nickname2) {
    
    
        if (username2 == null || username2.trim().isEmpty()) return JsonResult.error("请输入账号");
        if (password2 == null || password2.trim().isEmpty()) return JsonResult.error("请输入密码");
        if (nickname2 == null || nickname2.trim().isEmpty()) return JsonResult.error("请输入密码");
        Users userone = userService.getById(id);
        if(userone == null){
    
    
            return JsonResult.ok("用户不存在！");
        }
        userone.setUsername(username2);
        userone.setPassword(password2);
        userone.setNickname(nickname2);
        if (userService.save(userone)) {
    
    
            return JsonResult.ok("修改成功");
        }
        return JsonResult.error("修改失败");
    }

    /**
     * book查询全部
     */
    @ResponseBody
    @RequestMapping("/book/listByname")
    public JsonResult listByname(String name) {
    
    
        PageParam<Products> pageParam = new PageParam<>();
        pageParam.put("name", name);
        List<Products> records = booksService.listAll(pageParam.getNoPageParam());
        return JsonResult.ok().setData(records);
    }

    /**
     * 查询所有
     * @param bookshop
     * @return
     */
    @ResponseBody
    @RequestMapping("/book/list")
    public JsonResult productList(String bookshop) {
    
    
        PageParam<Shops> pageParam = new PageParam<>();
        List<Products> records = booksService.listAll(pageParam.getNoPageParam());
        return JsonResult.ok().setData(records);
    }


    /**
     * bookshop查询全部
     */
    @ResponseBody
    @RequestMapping("/bookshop/list")
    public JsonResult list2(String name) {
    
    
        PageParam<Shops> pageParam = new PageParam<>();
        pageParam.put("name", name);
        List<Shops> records = bookshopService.listAll(pageParam.getNoPageParam());
        return JsonResult.ok().setData(records);
    }

/**
 * 管理
 * Created by 小孟 v:jishulearn
 */
@Controller
@RequestMapping("/zaocan/pengyouquan")
public class PengyouquanController extends BaseController {
    
    
    @Autowired
    private PengyouquanService pengyouquanService;

    @RequestMapping()
    public String view() {
    
    
        return "zaocan/pengyouquan.html";
    }

    /**
     * 分页查询
     */
    @ResponseBody
    @RequestMapping("/page")
    public PageResult<Pengyouquan> page(HttpServletRequest request) {
    
    
        PageParam<Pengyouquan> pageParam = new PageParam<>(request);
        return new PageResult<>(pengyouquanService.page(pageParam, pageParam.getWrapper()).getRecords(), pageParam.getTotal());
        //return pengyouquanService.listPage(pageParam);  // 使用关联查询
    }

    /**
     * 查询全部
     */
    @ResponseBody
    @RequestMapping("/list")
    public JsonResult list(HttpServletRequest request) {
    
    
        PageParam<Pengyouquan> pageParam = new PageParam<>(request);
        return JsonResult.ok().setData(pengyouquanService.list(pageParam.getOrderWrapper()));
        //List<Pengyouquan> records = pengyouquanService.listAll(pageParam.getNoPageParam());  // 使用关联查询
        //return JsonResult.ok().setData(pageParam.sortRecords(records));
    }

    /**
     * 根据id查询
     */
    @ResponseBody
    @RequestMapping("/get")
    public JsonResult get(Integer id) {
    
    
        return JsonResult.ok().setData(pengyouquanService.getById(id));
		// 使用关联查询
        //PageParam<Pengyouquan> pageParam = new PageParam<>();
		//pageParam.put("id", id);
        //List<Pengyouquan> records = pengyouquanService.listAll(pageParam.getNoPageParam());
        //return JsonResult.ok().setData(pageParam.getOne(records));
    }

    /**
     * 添加
     */
    @ResponseBody
    @RequestMapping("/save")
    public JsonResult save(Pengyouquan pengyouquan) {
    
    
        if (pengyouquanService.save(pengyouquan)) {
    
    
            return JsonResult.ok("添加成功");
        }
        return JsonResult.error("添加失败");
    }

public class AddDiZHiActivity extends BaseActivity {
    
    
    @BindView(R.id.tv_title)
    TextView tv_title;
    @BindView(R.id.iv_back)
    ImageView iv_back;
    @BindView(R.id.iv_right)
    ImageView iv_right;
    @BindView(R.id.et_one)
    EditText et_one;
    @BindView(R.id.et_two)
    EditText et_two;
    @BindView(R.id.et_three)
    EditText et_three;

    @Override
    protected int createLayout() {
    
    
        return R.layout.activity_adddizhi;
    }

    @Override
    public void initViews() {
    
    
        iv_back.setVisibility(View.VISIBLE);
        tv_title.setText("添加地址");

    }

    @Override
    public void initData() {
    
    

    }

    @OnClick({
    
    R.id.iv_back, R.id.tv_add})
    public void onViewClicked(View view) {
    
    
        switch (view.getId()) {
    
    
            case R.id.iv_back:
                finish();
                break;
            case R.id.tv_add:
                if (TextUtils.isEmpty(et_one.getText().toString())) {
    
    
                    showToast("请填写地址");
                    return;
                }
                if (TextUtils.isEmpty(et_two.getText().toString())) {
    
    
                    showToast("请填写联系人");
                    return;
                }
                if (TextUtils.isEmpty(et_three.getText().toString())) {
    
    
                    showToast("请填写联系方式");
                    return;
                }

                add();
                break;
        }
    }

public class DiZhiActivity extends BaseActivity {
    
    
    @BindView(R.id.tv_title)
    TextView tv_title;
    @BindView(R.id.iv_back)
    ImageView iv_back;
    private Intent intent;
    @BindView(R.id.rv_shop)
    RecyclerView rv_shop;
    @BindView(R.id.iv_right)
    ImageView iv_right;
    private DiZHiAdapter diZHiAdapter;
    private List<PengListInfoBane> shopBeans = new ArrayList<>();

    @Override
    protected int createLayout() {
    
    
        return R.layout.activity_shop;
    }

    @Override
    public void initViews() {
    
    
        BCManager.instance().listener("DiZhiActivity", "DiZhiActivity", new BlockCallBack() {
    
    
            @Override
            public void block(Object target, String name, Object data) {
    
    
                     getData();
            }
        });
        getData();
        iv_back.setVisibility(View.VISIBLE);
        tv_title.setText("地址管理");
        iv_right.setVisibility(View.VISIBLE);
        iv_right.setImageResource(R.mipmap.ic_add);
    }

    private void getData() {
    
    

        MyHttpUtils.build()//构建myhttputils
                .url(HttpConfig.HTTP_IP + "/dizhi/list")//获取ip的url
                .setJavaBean(DiZhiBean.class)//设置请求结果对应的java对象
                .onExecute(new CommCallback<DiZhiBean>() {
    
    
                    @Override
                    public void onSucceed(DiZhiBean ipBean) {
    
    
                        Log.e("ipBean", ipBean + "ipBean");
                        rv_shop.setLayoutManager(new LinearLayoutManager(DiZhiActivity.this));
                        diZHiAdapter = new DiZHiAdapter(DiZhiActivity.this, R.layout.item_dizhi, ipBean.getData());
                        rv_shop.setAdapter(diZHiAdapter);
                        diZHiAdapter.setOnItemClickListener(new MultiItemTypeAdapter.OnItemClickListener() {
    
    
                            @Override
                            public void onItemClick(View view, RecyclerView.ViewHolder viewHolder, int i) {
    
    
                                BCManager.instance().post("dizhi","dizhi",ipBean.getData().get(i));
                                showToast("选择成功");
                                finish();
                            }

                            @Override
                            public boolean onItemLongClick(View view, RecyclerView.ViewHolder viewHolder, int i) {
    
    
                                return false;
                            }
                        });
                    }

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