《仿盒马》app开发技术分享-- 地址管理页（24）

技术栈

Appgallery connect

开发准备

上一节我们实现了个人信息页面的信息展示和页面修改，并且实现了数据的同步修改，这一节我们来实现电商应用里比较重要的模块，地址模块。首先我们来实现地址的展示。

功能分析

地址列表的展示相对来说是比较简单的，首先我们要新增对应的表，然后在云端先添加几条测试数据，然后在页面中实现当前用户对应的地址查询，在列表组件中进行展示

代码实现

首先我们创建对应的表 { "objectTypeName": "address_list", "fields": [ {"fieldName": "id", "fieldType": "Integer", "notNull": true, "belongPrimaryKey": true}, {"fieldName": "user_id", "fieldType": "Integer", "notNull": true, "defaultValue": 0}, {"fieldName": "administrativeArea", "fieldType": "String"}, {"fieldName": "locality", "fieldType": "String"}, {"fieldName": "subLocality", "fieldType": "String"}, {"fieldName": "placeName", "fieldType": "String"}, {"fieldName": "latitude", "fieldType": "String"}, {"fieldName": "longitude", "fieldType": "String"}, {"fieldName": "nikeName", "fieldType": "String"}, {"fieldName": "phone", "fieldType": "String"}, {"fieldName": "address", "fieldType": "String"} ], "indexes": [ {"indexName": "field1IndexId", "indexList": [{"fieldName":"id","sortType":"ASC"}]} ], "permissions": [ {"role": "World", "rights": ["Read", "Upsert", "Delete"]}, {"role": "Authenticated", "rights": ["Read", "Upsert", "Delete"]}, {"role": "Creator", "rights": ["Read", "Upsert", "Delete"]}, {"role": "Administrator", "rights": ["Read", "Upsert", "Delete"]} ] } 然后我们生成对应的实体类，和db类

db import { cloudDatabase } from '@kit.CloudFoundationKit';

class address_list extends cloudDatabase.DatabaseObject { public id: number; public user_id = 0; public administrativeArea: string; public locality: string; public subLocality: string; public placeName: string; public latitude: string; public longitude: string; public nikeName: string; public phone: string; public address: string;

public naturalbase_ClassName(): string { return 'address_list'; } }

export { address_list }; 实体类

class AddressList { id: number; user_id: number = 0; administrativeArea: string; locality: string; subLocality: string; placeName: string; latitude: string; longitude: string; nikeName: string; phone: string; address: string;

constructor() {
}


setId(id: number): void {
    this.id = id;
}

getId(): number  {
    return this.id;
}

setUser_id(user_id: number): void {
    this.user_id = user_id;
}

getUser_id(): number  {
    return this.user_id;
}

setAdministrativeArea(administrativeArea: string): void {
    this.administrativeArea = administrativeArea;
}

getAdministrativeArea(): string  {
    return this.administrativeArea;
}

setLocality(locality: string): void {
    this.locality = locality;
}

getLocality(): string  {
    return this.locality;
}

setSubLocality(subLocality: string): void {
    this.subLocality = subLocality;
}

getSubLocality(): string  {
    return this.subLocality;
}

setPlaceName(placeName: string): void {
    this.placeName = placeName;
}

getPlaceName(): string  {
    return this.placeName;
}

setLatitude(latitude: string): void {
    this.latitude = latitude;
}

getLatitude(): string  {
    return this.latitude;
}

setLongitude(longitude: string): void {
    this.longitude = longitude;
}

getLongitude(): string  {
    return this.longitude;
}

setNikeName(nikeName: string): void {
    this.nikeName = nikeName;
}

getNikeName(): string  {
    return this.nikeName;
}

setPhone(phone: string): void {
    this.phone = phone;
}

getPhone(): string  {
    return this.phone;
}

setAddress(address: string): void {
    this.address = address;
}

getAddress(): string  {
    return this.address;
}

static parseFrom(inputObject: any): AddressList {
    let result = new AddressList();
    if (!inputObject) {
        return result;
    }
    if (inputObject.id) {
        result.id = inputObject.id;
    }
    if (inputObject.user_id) {
        result.user_id = inputObject.user_id;
    }
    if (inputObject.administrativeArea) {
        result.administrativeArea = inputObject.administrativeArea;
    }
    if (inputObject.locality) {
        result.locality = inputObject.locality;
    }
    if (inputObject.subLocality) {
        result.subLocality = inputObject.subLocality;
    }
    if (inputObject.placeName) {
        result.placeName = inputObject.placeName;
    }
    if (inputObject.latitude) {
        result.latitude = inputObject.latitude;
    }
    if (inputObject.longitude) {
        result.longitude = inputObject.longitude;
    }
    if (inputObject.nikeName) {
        result.nikeName = inputObject.nikeName;
    }
    if (inputObject.phone) {
        result.phone = inputObject.phone;
    }
    if (inputObject.address) {
        result.address = inputObject.address;
    }
    return result;
}

}

export { AddressList };

都创建完成之后，接下来我们就可以创建对应的页面开始查询我们云数据库的数据了

@Entry @Component struct AddressListPage { @State user: User|null=null; @State addressList:AddressList[]=[] async aboutToAppear(): Promise { const value = await StorageUtils.getAll('user'); this.user=JSON.parse(value) let databaseZone = cloudDatabase.zone('default'); let condition = new cloudDatabase.DatabaseQuery(address_list); condition.equalTo("user_id",this.user!.user_id) let listData = await databaseZone.query(condition); let json = JSON.stringify(listData) let data1:AddressList[]= JSON.parse(json) this.addressList=data1 hilog.info(0x0000, 'testTag', Succeeded in querying data, result: ${data1}); } } 我们先添加对应的用户信息参数和对应的列表数据接收参数，然后在生命周期内进行数据查询 然后把数据展示到列表中

build() { Column() { CommonTopBar({ title: "地址列表", alpha: 0, titleAlignment: TextAlign.Center ,backButton:true}) Stack({alignContent:Alignment.Bottom}){ Column(){ List(){ ForEach(this.addressList,(item:AddressList,index:number)=>{ ListItem(){ Column(){ Row(){ Column({space:10}){ Row(){ Text(item.nikeName) .fontColor(Color.Black) .fontSize(16) .fontWeight(FontWeight.Bold) Text(item.phone) .fontColor(Color.Black) .fontSize(16) .fontWeight(FontWeight.Bold) .margin({left:20}) } Text(item.address) .fontColor(Color.Black) .fontSize(16) } .alignItems(HorizontalAlign.Start) .justifyContent(FlexAlign.Center)

                Image($r('app.media.address_edit'))
                  .width(20)
                  .height(20)
                  .onClick(()=>{
                    showToast("编辑")
                  })
              }
              .justifyContent(FlexAlign.SpaceBetween)
              .width('100%')
              .padding(10)
              Divider().width('90%').height(0.8)
                .color("#ffb1b0b0")
            }
          }
        })
      }
      .layoutWeight(1)
    }
    .height('90%')
    Text("新增地址")
      .width('70%')
      .height(45)
      .fontWeight(FontWeight.Bold)
      .fontColor(Color.White)
      .backgroundColor(0xff0000)
      .borderRadius(10)
      .textAlign(TextAlign.Center)
  }
  .backgroundColor(Color.White)
}
.backgroundColor(Color.White)
.height('100%')
.width('100%')

}

到这里我们的地址展示就实现了