前言
DevEco Studio版本：4.0.0.600
WanAndroid的API链接：玩Android 开放API-玩Android - wanandroid.com
其他一些参考点，请参考上面的WanAndroid开发第一篇
效果
首页实现
整体布局分为头部的Banner和底部的列表List，知道了整体的机构我们就来进行UI布局
1、Banner实现
参考华为官方 OpenHarmony Swiper
详细代码：
import router from '@ohos.router';
import { BannerItemBean } from '../bean/BannerItemBean';
import { HttpManager, RequestMethod } from '@app/BaseLibrary';
import LogUtils from '@app/BaseLibrary/src/main/ets/utils/LogUtils';
import { BannerBean } from '../bean/BannerBean';
const TAG = 'Banner--- ';
@Component
export struct Banner {
@State bannerData: Array<BannerItemBean> = [];
private swiperController: SwiperController = new SwiperController();
@State isVisibility: boolean = true
private onDataFinish: () => void //数据加载完成回调
aboutToAppear() {
this.getBannerData()
}
private getBannerData() {
HttpManager.getInstance()
.request<BannerBean>({
method: RequestMethod.GET,
header: { "Content-Type": "application/json" },
url: 'https://www.wanandroid.com/banner/json', //wanAndroid的API：Banner
})
.then((result: BannerBean) => {
LogUtils.info(TAG, "result: " + JSON.stringify(result))
if (result.errorCode == 0) {
this.isVisibility = true
this.bannerData = result.data
} else {
this.isVisibility = false
}
this.onDataFinish()
})
.catch((error) => {
LogUtils.info(TAG, "error: " + JSON.stringify(error))
this.isVisibility = false
this.onDataFinish()
})
}
build() {
Swiper(this.swiperController) {
ForEach(this.bannerData, (banner: BannerItemBean) => {
Image(banner.imagePath)
.borderRadius(16)
.onClick(() => {
router.pushUrl({
url: 'pages/WebPage',
params: {
title: banner.title,
uriLink: banner.url,
isShowCollect: false,
}
}, router.RouterMode.Single)
})
}, (banner: BannerItemBean) => banner.url)
}
.margin({ top: 10 })
.autoPlay(true)
.interval(1500)
.visibility(this.isVisibility ? Visibility.Visible : Visibility.None)
.width('100%')
.height(150)
}
}2、List列表实现
因为是带上拉加载和下拉刷新，参考我之前文章：鸿蒙自定义刷新组件使用_harmoneyos 自定义刷新
详细代码：
import {
BaseResponseBean,
Constants,
HtmlUtils,
HttpManager,
RefreshController,
RefreshListView,
RequestMethod
} from '@app/BaseLibrary';
import LogUtils from '@app/BaseLibrary/src/main/ets/utils/LogUtils';
import { HomeListItemBean } from '../bean/HomeListItemBean';
import { HomeListBean } from '../bean/HomeListBean';
import router from '@ohos.router';
import promptAction from '@ohos.promptAction';
const TAG = 'HomeList--- ';
@Component
export struct HomeList {
@State controller: RefreshController = new RefreshController()
@State homeListData: Array<HomeListItemBean> = [];
@State pageNum: number = 0
@State isRefresh: boolean = true
private onDataFinish: () => void //数据加载完成回调
@State userName: string = ''
@State token_pass: string = ''
@State listCollectState: Array<boolean> = [] //用于存储收藏状态
aboutToAppear() {
if (AppStorage.Has(Constants.APPSTORAGE_USERNAME)) {
this.userName = AppStorage.Get(Constants.APPSTORAGE_USERNAME) as string
}
if (AppStorage.Has(Constants.APPSTORAGE_TOKEN_PASS)) {
this.token_pass = AppStorage.Get(Constants.APPSTORAGE_TOKEN_PASS) as string
}
this.getHomeListData()
}
/**
* 获取列表数据
*/
private getHomeListData() {
HttpManager.getInstance()
.request<HomeListBean>({
method: RequestMethod.GET,
header: {
"Content-Type": "application/json",
"Cookie": `loginUserName=${this.userName}; token_pass=${this.token_pass}`
},
url: `https://www.wanandroid.com/article/list/${this.pageNum}/json` //wanAndroid的API：Banner
})
.then((result: HomeListBean) => {
LogUtils.info(TAG, "result: " + JSON.stringify(result))
if (this.isRefresh) {
this.controller.finishRefresh()
} else {
this.controller.finishLoadMore()
}
if (result.errorCode == 0) {
if (this.isRefresh) {
this.homeListData = result.data.datas
for (let i = 0; i < this.homeListData.length; i++) {
this.listCollectState[i] = this.homeListData[i].collect
}
} else {
this.homeListData = this.homeListData.concat(result.data.datas)
}
}
this.onDataFinish()
})
.catch((error) => {
LogUtils.info(TAG, "error: " + JSON.stringify(error))
if (this.isRefresh) {
this.controller.finishRefresh()
} else {
this.controller.finishLoadMore()
}
this.onDataFinish()
})
}
@Builder
itemLayout(item: HomeListItemBean, index: number) {
RelativeContainer() {
//作者或分享人
Text(item.author.length > 0 ? "作者：" + item.author : "分享人：" + item.shareUser)
.fontColor('#666666')
.fontSize(14)
.id("textAuthor")
.alignRules({
top: { anchor: '__container__', align: VerticalAlign.Top },
left: { anchor: '__container__', align: HorizontalAlign.Start }
})
Text(item.superChapterName + '/' + item.chapterName)
.fontColor('#1296db')
.fontSize(14)
.id("textChapterName")
.alignRules({
top: { anchor: '__container__', align: VerticalAlign.Top },
right: { anchor: '__container__', align: HorizontalAlign.End }
})
//标题
Text(HtmlUtils.formatStr(item.title))
.fontColor('#333333')
.fontWeight(FontWeight.Bold)
.maxLines(2)
.textOverflow({
overflow: TextOverflow.Ellipsis
})
.fontSize(20)
.margin({ top: 10 })
.id("textTitle")
.alignRules({
top: { anchor: 'textAuthor', align: VerticalAlign.Bottom },
left: { anchor: '__container__', align: HorizontalAlign.Start }
})
//更新时间
Text("时间：" + item.niceDate)
.fontColor('#666666')
.fontSize(14)
.id("textNiceDate")
.alignRules({
bottom: { anchor: '__container__', align: VerticalAlign.Bottom },
left: { anchor: '__container__', align: HorizontalAlign.Start }
})
//收藏状态
Image(this.listCollectState[index] ? $r('app.media.ic_select_collect') : $r('app.media.ic_normal_collect'))
.width(26)
.height(26)
.id('imageCollect')
.alignRules({
bottom: { anchor: '__container__', align: VerticalAlign.Bottom },
right: { anchor: '__container__', align: HorizontalAlign.End }
})
.onClick(() => {
this.setCollectData(item.id, index)
})
}
.width('100%')
.height(120)
.padding(10)
.margin({ left: 10, right: 10, top: 6, bottom: 6 })
.borderRadius(10)
.backgroundColor(Color.White)
}
build() {
RefreshListView({
list: this.homeListData,
controller: this.controller,
isEnableLog: true,
refreshLayout: (item: HomeListItemBean, index: number): void => this.itemLayout(item, index),
onItemClick: (item: HomeListItemBean, index: number) => {
LogUtils.info(TAG, "点击了：index： " + index + " item: " + item)
router.pushUrl({
url: 'pages/WebPage',
params: {
title: item.title,
uriLink: item.link,
isShowCollect: true,
isCollect: this.listCollectState[index]
}
}, router.RouterMode.Single)
},
onRefresh: () => {
//下拉刷新
this.isRefresh = true
this.pageNum = 0
this.getHomeListData()
},
onl oadMore: () => {
//上拉加载
this.isRefresh = false
this.pageNum++
this.getHomeListData()
}
})
}
/**
* 设置收藏和取消收藏状态
* @param id 文章id
* @param index 数据角标
*/
private setCollectData(id: number, index: number) {
let collect = this.listCollectState[index]
let urlLink = collect ? `https://www.wanandroid.com/lg/uncollect_originId/${id}/json` : `https://www.wanandroid.com/lg/collect/${id}/json` //取消收藏和收藏接口
HttpManager.getInstance()
.request<BaseResponseBean>({
method: RequestMethod.POST,
header: {
"Content-Type": "application/json",
"Cookie": `loginUserName=${this.userName}; token_pass=${this.token_pass}`
},
url: urlLink //wanAndroid的API：收藏和取消收藏
})
.then((result: BaseResponseBean) => {
LogUtils.info(TAG, "收藏 result: " + JSON.stringify(result))
if (result.errorCode == 0) {
this.listCollectState[index] = !this.listCollectState[index]
promptAction.showToast({ message: collect ? "取消收藏成功" : "收藏成功" })
} else {
promptAction.showToast({ message: result.errorMsg })
}
})
.catch((error) => {
LogUtils.info(TAG, "收藏 error: " + JSON.stringify(error))
})
}
}注意点：就是在获取List数据时，通过WanAndroid的API知道要想获取收藏状态需要传入用户登录时的Cookie,但是鸿蒙没有像Android那样的Cookie处理，只能通过在登录的时候获取loginUserName和token_pass然后在请求时将这两个参数添加到请求头中，实现如下图：
这两个参数获取参考第一篇的文章。
3、将两个视图整合
详细代码：
import { Banner } from './widget/Banner';
import { HomeList } from './widget/HomeList';
import { LoadingDialog } from '@app/BaseLibrary';
import LogUtils from '@app/BaseLibrary/src/main/ets/utils/LogUtils';
@Component
export struct HomePage {
@State bannerLoadDataStatus: boolean = false
@State HomeListLoadDataStatus: boolean = false
aboutToAppear() {
//弹窗控制器，显示
this.dialogController.open()
}
private dialogController = new CustomDialogController({
builder: LoadingDialog(),
customStyle: true,
alignment: DialogAlignment.Center, // 可设置dialog的对齐方式，设定显示在底部或中间等，默认为底部显示
})
build() {
Column() {
Banner({ onDataFinish: () => {
this.bannerLoadDataStatus = true
LogUtils.info("33333333333 Banner bannerLoadDataStatus: " + this.bannerLoadDataStatus + " HomeListLoadDataStatus: " + this.HomeListLoadDataStatus)
if (this.bannerLoadDataStatus && this.HomeListLoadDataStatus) {
this.dialogController.close()
}
} })
HomeList({ onDataFinish: () => {
this.HomeListLoadDataStatus = true
LogUtils.info("33333333333 HomeList bannerLoadDataStatus: " + this.bannerLoadDataStatus + " HomeListLoadDataStatus: " + this.HomeListLoadDataStatus)
if (this.bannerLoadDataStatus && this.HomeListLoadDataStatus) {
this.dialogController.close()
}
} }).flexShrink(1)
.margin({ top: 10 })
}
.visibility(this.bannerLoadDataStatus && this.HomeListLoadDataStatus ? Visibility.Visible : Visibility.Hidden)
.width('100%')
.height('100%')
}
}
4、页面初始化获取Banner和首页列表数据
Banner：
aboutToAppear() {
this.getBannerData()
}
首页列表：
aboutToAppear() {
this.getHomeListData()
}
源代码地址：WanAndroid_Harmony: WanAndroid的鸿蒙版本
标签：__,index,鸿蒙,LogUtils,item,result,import,第二篇,WanAndroid From： https://blog.csdn.net/Abner_Crazy/article/details/136642659