WanAndroid(鸿蒙版)开发的第二篇

前言

DevEco Studio版本：4.0.0.600

WanAndroid的API链接：玩Android 开放API-玩Android - wanandroid.com

1、WanAndroid(鸿蒙版)开发的第一篇

2、WanAndroid(鸿蒙版)开发的第二篇

3、WanAndroid(鸿蒙版)开发的第三篇

4、WanAndroid(鸿蒙版)开发的第四篇

5、WanAndroid(鸿蒙版)开发的第五篇

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 = trueprivate 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 = truethis.bannerData = result.data} else {this.isVisibility = false}this.onDataFinish()}).catch((error) => {LogUtils.info(TAG, "error: " + JSON.stringify(error))this.isVisibility = falsethis.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 = trueprivate 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.datasfor (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()})}@BuilderitemLayout(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') : $r('app.media.ic_normal_collect')).width(26).height(26).id('imageCollect').alignRules({bottom: { anchor: '__container__', align: VerticalAlign.Bottom },right: { anchor: '__container__', align: HorizontalAlign.End }}).onClick(() => {this.setCollectData(item.id, index)})}.width('100%').height(120).padding(10).margin({ left: 10, right: 10, top: 6, bottom: 6 }).borderRadius(10).backgroundColor(Color.White)}build() {RefreshListView({list: this.homeListData,controller: this.controller,isEnableLog: true,refreshLayout: (item: HomeListItemBean, index: number): void => this.itemLayout(item, index),onItemClick: (item: HomeListItemBean, index: number) => {LogUtils.info(TAG, "点击了：index： " + index + " item: " + item)router.pushUrl({url: 'pages/WebPage',params: {title: item.title,uriLink: item.link,isShowCollect: true,isCollect: this.listCollectState[index]}}, router.RouterMode.Single)},onRefresh: () => {//下拉刷新this.isRefresh = truethis.pageNum = 0this.getHomeListData()},onLoadMore: () => {//上拉加载this.isRefresh = falsethis.pageNum++this.getHomeListData()}})}/*** 设置收藏和取消收藏状态* @param id  文章id* @param index  数据角标*/private setCollectData(id: number, index: number) {let collect = this.listCollectState[index]let urlLink = collect ? `https://www.wanandroid.com/lg/uncollect_originId/${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 = falseaboutToAppear() {//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 = trueLogUtils.info("33333333333 Banner  bannerLoadDataStatus: " + this.bannerLoadDataStatus + "  HomeListLoadDataStatus: " + this.HomeListLoadDataStatus)if (this.bannerLoadDataStatus && this.HomeListLoadDataStatus) {this.dialogController.close()}} })HomeList({ onDataFinish: () => {this.HomeListLoadDataStatus = trueLogUtils.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