背景：
前几篇学习了元服务，后面几期就让我们开发简单的元服务吧，里面丰富的内容大家自己加，本期案例 仅供参考
先上本期效果图 ，里面图片自行替换
效果图1完整代码案例如下：
- Index
import { authentication } from '@kit.AccountKit';
import { BusinessError } from '@kit.BasicServicesKit';
import { hilog } from '@kit.PerformanceAnalysisKit';
import { TypeShortVideoItem } from './TypeShortVideoItem';@Entry
@Component
struct Index {@State message: string = 'Hello World';build() {Column() {Text($r('app.string.EntryAbility_label')).fontSize(20).margin({ bottom: 10 })List({ space: 6 }) {ForEach(['《星辰大海》- 黄霄雲','《青花瓷》- 周杰伦','《追光者》- 岑宁儿','《小幸运》- 田馥甄','《野狼 disco》- 宝石 Gem',], (item: string) => {ListItem() {TypeShortVideoItem({ title: item })}})}}.alignItems(HorizontalAlign.Start).height('100%').padding(8).width('100%').margin({ top: 40 })}aboutToAppear() {hilog.info(0x0000, 'testTag', '%{public}s', 'Ability onCreate');this.loginWithHuaweiID();}/*** Sample code for using HUAWEI ID to log in to atomic service.* According to the Atomic Service Review Guide, when a atomic service has an account system,* the option to log in with a HUAWEI ID must be provided.* The following presets the atomic service to use the HUAWEI ID silent login function.* To enable the atomic service to log in successfully using the HUAWEI ID, please refer* to the HarmonyOS HUAWEI ID Access Guide to configure the client ID and fingerprint certificate.*/private loginWithHuaweiID() {// Create a login request and set parameterslet loginRequest = new authentication.HuaweiIDProvider().createLoginWithHuaweiIDRequest();// Whether to forcibly launch the HUAWEI ID login page when the user is not logged in with the HUAWEI IDloginRequest.forceLogin = false;// Execute login requestlet controller = new authentication.AuthenticationController();controller.executeRequest(loginRequest).then((data) => {let loginWithHuaweiIDResponse = data as authentication.LoginWithHuaweiIDResponse;let authCode = loginWithHuaweiIDResponse.data?.authorizationCode;// Send authCode to the backend in exchange for unionID, session}).catch((error: BusinessError) => {hilog.error(0x0000, 'testTag', 'error: %{public}s', JSON.stringify(error));if (error.code == authentication.AuthenticationErrorCode.ACCOUNT_NOT_LOGGED_IN) {// HUAWEI ID is not logged in, it is recommended to jump to the login guide page}});}
}
- Item
@Extend(Image)
function imageExtend(width: Length, height: Length) {.width(width).height(height)
}@Preview
@ComponentV2
export struct TypeShortVideoItem {@Param title: string = ''build() {Column() {RelativeContainer() {Image('').borderRadius({ topLeft: 8, topRight: 8 }).backgroundColor('#565656').width('100%').height(170).alignRules({left: { anchor: '__container__', align: HorizontalAlign.Start },right: { anchor: '__container__', align: HorizontalAlign.End }}).id('bg_img_single_top')Image($r('app.media.ic_video_cover')).height(170).alignRules({middle: { anchor: '__container__', align: HorizontalAlign.Center }}).id('img_single_top')Image($r('app.media.ic_video_item_attitude_positive')).imageExtend(30, 28).id('iv_attitude').alignRules({left: { anchor: '__container__', align: HorizontalAlign.Start }})Text(` ${generateFiveDigitRandomNumber()+''}S `).fontSize(11).fontColor('#ffffff').backgroundColor('#CC222222').borderRadius(2).id('tv_video_duration').margin({ left: 8, bottom: 8, top: 146 })Column() {// Image($r('app.media.ic_video_item_similar')).width(13)// Text('12').fontSize(11).fontColor('#ffffff')// .margin({ top: 2, bottom: 6 })Image($r('app.media.ic_video_item_like')).width(13)Text(generateFiveDigitRandomNumber()+'').fontSize(11).fontColor('#ffffff').margin({ top: 2, bottom: 6 })Image($r('app.media.ic_video_item_comment')).width(13)Text(generateFiveDigitRandomNumber()+'').fontSize(11).fontColor('#ffffff').margin({ top: 2, bottom: 6 })Image($r('app.media.ic_video_item_collection')).width(13)Text(generateFiveDigitRandomNumber()+'').fontSize(11).fontColor('#ffffff').margin({ top: 2, bottom: 6 })}.alignRules({left: { anchor: 'iv_web_logo', align: HorizontalAlign.Start },bottom: { anchor: "iv_web_logo", align: VerticalAlign.Bottom }}).id('cl_right').margin({ left: 3, bottom: 28 })ImageTextShortVideo(this)Image($r('app.media.app_icon')).width(20).borderRadius(10).margin({ top: 140, right: 8, bottom: 8 }).alignRules({right: { anchor: '__container__', align: HorizontalAlign.End },}).id('iv_web_logo')Text(generateRandomDate()).fontSize(11).fontColor('#505050').id('tv_item_time').alignRules({ bottom: { anchor: 'll_item_author_avatar', align: VerticalAlign.Top } }).margin({ left: 8 })Row() {Image($r('app.media.zuijinmusic')).width(16).borderRadius(8)Text(generateFiveCharacterRandomString()).fontSize(11).fontColor('#505050').margin({ left: 4, right: 4 })Text('发布于 北京').fontSize(11).fontColor('#666666').margin({ left: 4, right: 4 })Blank()Image($r('app.media.ic_item_more')).width(16).onClick(() => {})}.width('100%').height(36).id('ll_item_author_avatar').alignRules({ bottom: { anchor: '__container__', align: VerticalAlign.Bottom } }).padding({ left: 8, right: 8 })//是否选中状态Row() {Toggle({ type: ToggleType.Checkbox, isOn: true }).width(21)}.width('100%').height(276).backgroundColor('#4D000000').justifyContent(FlexAlign.End).alignItems(VerticalAlign.Top).borderRadius(8).id('cl_back').alignRules({right: { anchor: '__container__', align: HorizontalAlign.End }}).visibility(Visibility.None)}.width('100%').height(276).border({ width: 1, color: '#E3E3E3', radius: 8 })}//测试用 .width(px2vp(display.getDefaultDisplaySync().width)/2-10).width('100%')// .height('100%')}
}/** 短视频专属图片+文字 */
@Builder
export function ImageTextShortVideo(text: TypeShortVideoItem) {Text() {Span(text.title).fontColor('#222222').fontSize(14).fontWeight(FontWeight.Bold)}.width('100%').maxLines(2).lineHeight(20).textOverflow({ overflow: TextOverflow.Ellipsis }).padding({ left: 8, top: 8, right: 8 }).alignRules({ top: { anchor: 'bg_img_single_top', align: VerticalAlign.Bottom } })
}function generateRandomDate(): string {const minYear = 2023; // 最小年份const maxYear = 2024; // 最大年份const minMonth = 1; // 最小月份const maxMonth = 12; // 最大月份const minDay = 1; // 最小日期const maxDay = 31; // 最大日期// 生成随机年份const year = Math.floor(Math.random() * (maxYear - minYear + 1)) + minYear;// 生成随机月份const month = Math.floor(Math.random() * (maxMonth - minMonth + 1)) + minMonth;// 根据月份生成合理的日期let day = 0;if ([1, 3, 5, 7, 8, 10, 12].includes(month)) {day = Math.floor(Math.random() * (31 - minDay + 1)) + minDay;} else if ([4, 6, 9, 11].includes(month)) {day = Math.floor(Math.random() * (30 - minDay + 1)) + minDay;} else if (month === 2) {// 处理闰年if ((year % 4 === 0 && year % 100 !== 0) || year % 400 === 0) {day = Math.floor(Math.random() * (29 - minDay + 1)) + minDay;} else {day = Math.floor(Math.random() * (28 - minDay + 1)) + minDay;}}// 返回格式化的日期字符串return `${year}-${String(month).padStart(2, '0')}-${String(day).padStart(2, '0')}`;
}
function generateFiveCharacterRandomString(): string {const characters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';let result = '';for (let i = 0; i < 5; i++) {result += characters.charAt(Math.floor(Math.random() * characters.length));}return result;
}function generateFiveDigitRandomNumber(): number {const min = 100; // 五位数的最小值const max = 999; // 五位数的最大值return Math.floor(Math.random() * (max - min + 1)) + min;
}最近文章>>>>>>>>>>>
HarmonyOS NEXT实战：元服务与应用 APP 发布应用市场的详细步骤与流程
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有兴趣的同学可以点击查看源码
- gitee：https://gitee.com/jiaojiaoone/explore-harmony-next/tree/case%2Fwanandroid/
- github：https://github.com/JasonYinH/ExploreHarmonyNext.git