手把手教你做一个安卓点餐系统

大家好，又见面了，我是你们的朋友全栈君。

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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