{"id":58480,"date":"2025-08-16T11:25:12","date_gmt":"2025-08-16T03:25:12","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/58480.html"},"modified":"2025-08-16T11:25:12","modified_gmt":"2025-08-16T03:25:12","slug":"%e5%bc%80%e6%ba%90-arkts-%e9%b8%bf%e8%92%99%e5%ba%94%e7%94%a8-%e5%bc%80%e5%8f%91%ef%bc%88%e5%8d%81%e4%b8%83%ef%bc%89%e9%80%9a%e8%ae%af-http%e5%a4%9a%e6%96%87%e4%bb%b6%e4%b8%8b%e8%bd%bd","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/58480.html","title":{"rendered":"\u5f00\u6e90 Arkts \u9e3f\u8499\u5e94\u7528 \u5f00\u53d1\uff08\u5341\u4e03\uff09\u901a\u8baf--http\u591a\u6587\u4ef6\u4e0b\u8f7d"},"content":{"rendered":"

\u00a0\u6587\u7ae0\u7684\u76ee\u7684\u4e3a\u4e86\u8bb0\u5f55\u4f7f\u7528Arkts\u00a0\u8fdb\u884cHarmony\u00a0app\u00a0\u5f00\u53d1\u5b66\u4e60\u7684\u7ecf\u5386\u3002\u672c\u804c\u4e3a\u5d4c\u5165\u5f0f\u8f6f\u4ef6\u5f00\u53d1，\u516c\u53f8\u5b89\u6392\u5f00\u53d1app，\u4e34\u65f6\u5b66\u4e60，\u5b8c\u6210app\u7684\u5f00\u53d1\u3002\u5f00\u53d1\u6d41\u7a0b\u548c\u8981\u70b9\u6709\u4e9b\u8bb0\u5fc6\u6a21\u7cca，\u8d76\u7d27\u8bb0\u5f55，\u9632\u6b62\u5fd8\u8bb0\u3002<\/p>\n

\u00a0\u76f8\u5173\u94fe\u63a5：<\/p>\n

\u5f00\u6e90 Arkts \u9e3f\u8499\u5e94\u7528 \u5f00\u53d1（\u4e00）\u5de5\u7a0b\u6587\u4ef6\u5206\u6790-CSDN\u535a\u5ba2<\/span><\/p>\n

\u5f00\u6e90 Arkts \u9e3f\u8499\u5e94\u7528 \u5f00\u53d1（\u4e8c）\u5c01\u88c5\u5e93.har\u5236\u4f5c\u548c\u5e94\u7528-CSDN\u535a\u5ba2<\/span><\/p>\n

\u5f00\u6e90 Arkts \u9e3f\u8499\u5e94\u7528 \u5f00\u53d1（\u4e09）Arkts\u7684\u4ecb\u7ecd-CSDN\u535a\u5ba2<\/span><\/p>\n

\u5f00\u6e90 Arkts \u9e3f\u8499\u5e94\u7528 \u5f00\u53d1（\u56db）\u5e03\u5c40\u548c\u5e38\u7528\u63a7\u4ef6-CSDN\u535a\u5ba2<\/span><\/p>\n

\u5f00\u6e90 Arkts \u9e3f\u8499\u5e94\u7528 \u5f00\u53d1（\u4e94）\u63a7\u4ef6\u7ec4\u6210\u548c\u590d\u6742\u63a7\u4ef6-CSDN\u535a\u5ba2<\/span><\/p>\n

\u5f00\u6e90 Arkts \u9e3f\u8499\u5e94\u7528 \u5f00\u53d1（\u516d）\u6570\u636e\u6301\u4e45–\u6587\u4ef6\u548c\u9996\u9009\u9879\u5b58\u50a8-CSDN\u535a\u5ba2<\/span><\/p>\n

\u5f00\u6e90 Arkts \u9e3f\u8499\u5e94\u7528 \u5f00\u53d1（\u4e03）\u6570\u636e\u6301\u4e45–sqlite\u5173\u7cfb\u6570\u636e\u5e93-CSDN\u535a\u5ba2<\/span><\/p>\n

\u5f00\u6e90 Arkts \u9e3f\u8499\u5e94\u7528 \u5f00\u53d1（\u516b）\u591a\u5a92\u4f53–\u76f8\u518c\u548c\u76f8\u673a-CSDN\u535a\u5ba2<\/span><\/p>\n

\u5f00\u6e90 Arkts \u9e3f\u8499\u5e94\u7528 \u5f00\u53d1（\u4e5d）\u901a\u8baf–tcp\u5ba2\u6237\u7aef-CSDN\u535a\u5ba2<\/span><\/p>\n

\u5f00\u6e90 Arkts \u9e3f\u8499\u5e94\u7528 \u5f00\u53d1（\u5341）\u901a\u8baf–Http-CSDN\u535a\u5ba2<\/span><\/p>\n

\u5f00\u6e90 Arkts \u9e3f\u8499\u5e94\u7528 \u5f00\u53d1（\u5341\u4e00）\u8bc1\u4e66\u548c\u5305\u540d\u4fee\u6539-CSDN\u535a\u5ba2<\/span><\/p>\n

\u5f00\u6e90 Arkts \u9e3f\u8499\u5e94\u7528 \u5f00\u53d1（\u5341\u4e8c）\u4f20\u611f\u5668\u7684\u4f7f\u7528-CSDN\u535a\u5ba2<\/span><\/p>\n

\u5f00\u6e90 Arkts \u9e3f\u8499\u5e94\u7528 \u5f00\u53d1（\u5341\u4e09）\u97f3\u9891–MP3\u64ad\u653e_arkts avplayer\u64ad\u653e\u97f3\u9891 mp3-CSDN\u535a\u5ba2<\/span><\/p>\n

\u5f00\u6e90 Arkts \u9e3f\u8499\u5e94\u7528 \u5f00\u53d1（\u5341\u56db）\u7ebf\u7a0b–\u4efb\u52a1\u6c60(taskpool)-CSDN\u535a\u5ba2<\/span><\/p>\n

\u5f00\u6e90 Arkts \u9e3f\u8499\u5e94\u7528 \u5f00\u53d1（\u5341\u4e94）\u81ea\u5b9a\u4e49\u7ed8\u56fe\u63a7\u4ef6–\u4eea\u8868\u76d8-CSDN\u535a\u5ba2<\/span><\/p>\n

\u5f00\u6e90 Arkts \u9e3f\u8499\u5e94\u7528 \u5f00\u53d1（\u5341\u516d）\u81ea\u5b9a\u4e49\u7ed8\u56fe\u63a7\u4ef6–\u6ce2\u5f62\u56fe-CSDN\u535a\u5ba2<\/span><\/p>\n

\u5f00\u6e90 Arkts \u9e3f\u8499\u5e94\u7528 \u5f00\u53d1（\u5341\u4e03）\u901a\u8baf–http\u591a\u6587\u4ef6\u4e0b\u8f7d-CSDN\u535a\u5ba2<\/span><\/p>\n

\u5f00\u6e90 Arkts \u9e3f\u8499\u5e94\u7528 \u5f00\u53d1（\u5341\u516b）\u901a\u8baf–Ble\u4f4e\u529f\u8017\u84dd\u7259\u670d\u52a1\u5668-CSDN\u535a\u5ba2<\/span><\/p>\n

\u00a0\u63a8\u8350\u94fe\u63a5：<\/p>\n

\u5f00\u6e90 java android app \u5f00\u53d1（\u4e00）\u5f00\u53d1\u73af\u5883\u7684\u642d\u5efa-CSDN\u535a\u5ba2<\/p>\n

\u5f00\u6e90 java android app \u5f00\u53d1（\u4e8c）\u5de5\u7a0b\u6587\u4ef6\u7ed3\u6784-CSDN\u535a\u5ba2<\/p>\n

\u5f00\u6e90 java android app \u5f00\u53d1（\u4e09）GUI\u754c\u9762\u5e03\u5c40\u548c\u5e38\u7528\u7ec4\u4ef6-CSDN\u535a\u5ba2<\/p>\n

\u5f00\u6e90 java android app \u5f00\u53d1（\u56db）GUI\u754c\u9762\u91cd\u8981\u7ec4\u4ef6-CSDN\u535a\u5ba2<\/p>\n

\u5f00\u6e90 java android app \u5f00\u53d1（\u4e94）\u6587\u4ef6\u548c\u6570\u636e\u5e93\u5b58\u50a8-CSDN\u535a\u5ba2<\/p>\n

\u5f00\u6e90 java android app \u5f00\u53d1（\u516d）\u591a\u5a92\u4f53\u4f7f\u7528-CSDN\u535a\u5ba2<\/p>\n

\u5f00\u6e90 java android app \u5f00\u53d1（\u4e03）\u901a\u8baf\u4e4bTcp\u548cHttp-CSDN\u535a\u5ba2<\/p>\n

\u5f00\u6e90 java android app \u5f00\u53d1（\u516b）\u901a\u8baf\u4e4bMqtt\u548cBle-CSDN\u535a\u5ba2<\/p>\n

\u5f00\u6e90 java android app \u5f00\u53d1（\u4e5d）\u540e\u53f0\u4e4b\u7ebf\u7a0b\u548c\u670d\u52a1-CSDN\u535a\u5ba2<\/p>\n

\u5f00\u6e90 java android app \u5f00\u53d1（\u5341）\u5e7f\u64ad\u673a\u5236-CSDN\u535a\u5ba2<\/p>\n

\u5f00\u6e90 java android app \u5f00\u53d1（\u5341\u4e00）\u8c03\u8bd5\u3001\u53d1\u5e03-CSDN\u535a\u5ba2<\/p>\n

\u5f00\u6e90 java android app \u5f00\u53d1（\u5341\u4e8c）\u5c01\u5e93.aar-CSDN\u535a\u5ba2<\/p>\n

\u63a8\u8350\u94fe\u63a5：<\/p>\n

\u5f00\u6e90C# .net mvc \u5f00\u53d1（\u4e00）WEB\u642d\u5efa_c#\u90e8\u7f72web\u7a0b\u5e8f-CSDN\u535a\u5ba2<\/p>\n

\u5f00\u6e90 C# .net mvc \u5f00\u53d1（\u4e8c）\u7f51\u7ad9\u5feb\u901f\u642d\u5efa_c#\u7f51\u7ad9\u5f00\u53d1-CSDN\u535a\u5ba2<\/p>\n

\u5f00\u6e90 C# .net mvc \u5f00\u53d1（\u4e09）WEB\u5185\u5916\u7f51\u8bbf\u95ee(VS\u53d1\u5e03\u3001IIS\u914d\u7f6e\u7f51\u7ad9\u3001\u82b1\u751f\u58f3\u5916\u7f51\u7a7f\u523a\u8bbf\u95ee)_c# mvc \u57df\u540d\u4e0b\u4e0d\u53ef\u8a2a\u554f\u5167\u7db2,\u5167\u7db2\u4e0b\u53ef\u4ee5\u8a2a\u554f\u57df\u540d-CSDN\u535a\u5ba2<\/p>\n

\u5f00\u6e90 C# .net mvc \u5f00\u53d1（\u56db）\u5de5\u7a0b\u7ed3\u6784\u3001\u9875\u9762\u63d0\u4ea4\u4ee5\u53ca\u663e\u793a_c#\u5de5\u7a0b\u7ed3\u6784-CSDN\u535a\u5ba2<\/p>\n

\u5f00\u6e90 C# .net mvc \u5f00\u53d1（\u4e94）\u5e38\u7528\u4ee3\u7801\u5feb\u901f\u5f00\u53d1_c# mvc\u5f00\u53d1-CSDN\u535a\u5ba2<\/p>\n<\/p>\n

\u672c\u7ae0\u5185\u5bb9\u4e3b\u8981\u6f14\u793a\u4e86\u4e00\u4e2a\u591a\u6587\u4ef6\u4e0b\u8f7d\u7684HarmonyOS\u5e94\u7528\u754c\u9762，\u4e3b\u8981\u5305\u542b\u4e09\u4e2a\u90e8\u5206：MultipleFilesDownload\u4e3b\u7ec4\u4ef6\u3001FileDownloadItem\u4e0b\u8f7d\u9879\u7ec4\u4ef6\u548cProgressButton\u8fdb\u5ea6\u6309\u94ae\u7ec4\u4ef6\u3002<\/p>\n<\/p>\n

1.\u5de5\u7a0b\u7ed3\u6784<\/p>\n

2.\u6e90\u7801\u89e3\u6790<\/p>\n

3.\u6f14\u793a\u6548\u679c<\/p>\n

4.\u5de5\u7a0b\u4e0b\u8f7d\u7f51\u5740<\/p>\n<\/p>\n

\u4e00\u3001\u5de5\u7a0b\u7ed3\u6784，\u4e3b\u8981\u5305\u62ec3\u4e2a\u6587\u4ef6，Index.ets,FileDownloadItem.ets,ProgressButton.ets\u3002<\/p>\n

\"\"\u200b<\/p>\n<\/p>\n

\u4e8c\u3001\u6e90\u7801\u89e3\u6790<\/p>\n

2.1\u00a0 Index.ets\u6587\u4ef6：\u7ba1\u7406\u591a\u4e2a\u6587\u4ef6\u7684\u4e0b\u8f7d\u4efb\u52a1，\u63d0\u4f9b"\u5168\u90e8\u5f00\u59cb\/\u6682\u505c"\u529f\u80fd，\u663e\u793a\u4e0b\u8f7d\u5217\u8868\u3002<\/p>\n

\u7b80\u5355\u8bf4\u660e：<\/p>\n

\u4f7f\u7528@Entry\u548c@Component\u88c5\u9970\u5668\u58f0\u660e\u4e3a\u5165\u53e3\u7ec4\u4ef6，<\/p>\n

\u7ef4\u62a4\u4e00\u4e2a\u4e0b\u8f7dURL\u6570\u7ec4downloadUrlArray<\/p>\n

\u4f7f\u7528ForEach\u6e32\u67d3\u591a\u4e2aFileDownloadItem\u7ec4\u4ef6<\/p>\n

\u63d0\u4f9b\u5168\u5c40\u7684\u5f00\u59cb\/\u6682\u505c\u6240\u6709\u4e0b\u8f7d\u7684\u529f\u80fd<\/p>\n

\u8ddf\u8e2a\u4e0b\u8f7d\u8ba1\u6570\u548c\u5931\u8d25\u8ba1\u6570<\/p>\n<\/p>\n

\u4ee5\u4e0b\u4e3a\u4ee3\u7801：<\/p>\n

import { request } from '@kit.BasicServicesKit';
\nimport { FileDownloadItem } from '..\/view\/FileDownloadItem';<\/p>\n

const NO_TASK: number = 0;<\/p>\n

function downloadConfig(downloadUrl: string): request.agent.Config {
\n const config: request.agent.Config = {
\n action: request.agent.Action.DOWNLOAD,
\n url: downloadUrl,
\n overwrite: true,
\n method: 'GET',
\n saveas: '.\/',
\n mode: request.agent.Mode.BACKGROUND,
\n gauge: true,
\n retry: false
\n };
\n return config;
\n}<\/p>\n

@Entry
\n@Component
\nstruct MultipleFilesDownload {
\n \/**
\n * enter the download urls
\n *\/
\n private downloadUrlArray: string[] = ["https:\/\/m.down.sandai.net\/mobile\/OfficialSite_MobileThunder1.apk"];
\n @State downloadConfigArray: request.agent.Config[] = [];
\n @State isStartAllDownload: boolean = false;
\n @State downloadCount: number = 0;
\n @State downloadFailCount: number = 0;<\/p>\n

aboutToAppear(): void {
\n for (let i = 0; i < this.downloadUrlArray.length; i++) {
\n const config: request.agent.Config = downloadConfig(this.downloadUrlArray[i]);
\n this.downloadConfigArray.push(config);
\n }
\n this.downloadCount = this.downloadUrlArray.length;
\n }<\/p>\n

build() {
\n Column() {
\n Row() {
\n Text($r('app.string.multiple_files_download_transfer_list'))
\n .fontWeight(FontWeight.Bold)
\n .fontSize($r('app.integer.title_font_size'))
\n .width('100%')
\n .fontColor($r('app.color.text_color'))
\n }
\n .alignItems(VerticalAlign.Bottom)
\n .width('91.1%')
\n .height(112)<\/p>\n

Row() {
\n Row() {
\n Text($r('app.string.multiple_files_download_queue'))
\n .fontSize($r('app.integer.multiple_files_download_text_font_size_fourteen'))
\n .fontColor($r('sys.color.ohos_id_color_text_secondary'))
\n }.width($r('app.string.multiple_files_download_row_width'))<\/p>\n

Row() {
\n Text(this.isStartAllDownload && this.downloadCount > NO_TASK ? $r('app.string.pause_all') :
\n $r('app.string.start_all'))
\n .fontSize($r('app.integer.multiple_files_download_text_font_size_fourteen'))
\n .fontWeight(500)
\n .fontColor($r('sys.color.ohos_id_color_text_primary_activated'))
\n .textAlign(TextAlign.End)
\n .width($r('app.string.multiple_files_download_row_text_width'))
\n .onClick(() => {
\n if (this.downloadCount === NO_TASK) {
\n this.getUIContext().showAlertDialog({
\n message: $r('app.string.multiple_files_download_completed'),
\n alignment: DialogAlignment.Center
\n });
\n return;
\n }
\n this.isStartAllDownload = !this.isStartAllDownload;
\n })
\n }.width($r('app.string.multiple_files_download_row_width'))
\n }
\n .margin({
\n left: 16,
\n right: 16,
\n top: $r('app.integer.multiple_files_download_margin_top_twenty_eight'),
\n bottom: $r('app.integer.margin_eight')
\n })<\/p>\n

List() {
\n ForEach(this.downloadConfigArray, (item: request.agent.Config) => {
\n ListItem() {
\n FileDownloadItem({
\n downloadConfig: item,
\n isStartAllDownload: this.isStartAllDownload,
\n downloadCount: this.downloadCount,
\n downloadFailCount: this.downloadFailCount
\n })
\n }
\n }, (item: request.agent.Config) => JSON.stringify(item))
\n }
\n .width('100%')
\n .height('100%')
\n }
\n .focusable(false)
\n }
\n}<\/p>\n

@Builder
\nexport function getMultipleFilesDownload(): void {
\n MultipleFilesDownload();
\n} <\/p>\n

2.2\u00a0\u00a0FileDownloadItem.ets\u7ec4\u4ef6：\u663e\u793a\u6587\u4ef6\u540d\u3001\u4e0b\u8f7d\u8fdb\u5ea6\u548c\u72b6\u6001，\u63d0\u4f9b\u6682\u505c\/\u7ee7\u7eed\u4e0b\u8f7d\u529f\u80fd，\u5904\u7406\u4e0b\u8f7d\u8fc7\u7a0b\u4e2d\u7684\u5404\u79cd\u56de\u8c03\u3002<\/p>\n

\u7b80\u5355\u8bf4\u660e：<\/p>\n

completedCallback: \u4e0b\u8f7d\u5b8c\u6210<\/p>\n

failedCallback: \u4e0b\u8f7d\u5931\u8d25<\/p>\n

pauseCallback: \u6682\u505c\u4e0b\u8f7d<\/p>\n

resumeCallback: \u7ee7\u7eed\u4e0b\u8f7d<\/p>\n

progressCallback: \u4e0b\u8f7d\u8fdb\u5ea6\u66f4\u65b0<\/p>\n

responseCallback: HTTP\u54cd\u5e94<\/p>\n

\u4f7f\u7528ProgressButton\u7ec4\u4ef6\u663e\u793a\u4e0b\u8f7d\u8fdb\u5ea6\u548c\u63a7\u5236\u6309\u94ae<\/p>\n

\u5904\u7406\u6587\u4ef6\u5927\u5c0f\u548c\u4e0b\u8f7d\u8fdb\u5ea6\u7684\u663e\u793a\u8f6c\u6362<\/p>\n<\/p>\n

import { common } from '@kit.AbilityKit';
\nimport { request } from '@kit.BasicServicesKit';
\nimport { hilog } from '@kit.PerformanceAnalysisKit';<\/p>\n

import { ProgressButton } from '.\/ProgressButton';<\/p>\n

const uiContext: UIContext | undefined = AppStorage.get('uiContext');<\/p>\n

const TAG = 'FileDownloadItem';
\nconst BYTE_CONVERSION: number = 1024;
\nconst context = uiContext!.getHostContext()! as common.UIAbilityContext;<\/p>\n

function getFileNameFromUrl(url: string): string {
\n const segments = url.split('\/');
\n let tmp = segments.pop() || '';
\n if (tmp.indexOf('?') != -1) {
\n return tmp.split('?')[0];
\n }
\n return tmp;
\n}<\/p>\n

@Component
\nexport struct FileDownloadItem {
\n @State downloadConfig: request.agent.Config = { action: request.agent.Action.DOWNLOAD, url: '' };
\n @State fileName: string = '';
\n @State textState: string | Resource = "";
\n @Link @Watch('onDownLoadUpdated') isStartAllDownload: boolean;
\n private downloadTask: request.agent.Task | undefined = undefined;
\n @Link downloadCount: number;
\n @Link downloadFailCount: number;
\n @State isShow: boolean = false;
\n @State downloading: boolean = false;
\n @State sFileSize: string | number = "-";
\n @State nFileSize: number = 0;
\n @State sCurrentDownloadSize: string = "-";
\n @State @Watch('updateProgress') nCurrentDownloadSize: number = 0;
\n @State progress: number = 0;
\n @State isPaused: boolean = false;
\n private completedCallback = (progress: request.agent.Progress) => {
\n this.textState = $r("app.string.download_completed");
\n if (this.sFileSize === -1) {
\n this.sFileSize = this.sCurrentDownloadSize
\n this.nCurrentDownloadSize = 1;
\n }
\n this.downloadCount–;
\n }
\n private failedCallback = (progress: request.agent.Progress) => {
\n this.textState = $r("app.string.download_fail");
\n this.downloadFailCount++;
\n if (this.downloadFailCount === this.downloadCount) {
\n this.isStartAllDownload = false;
\n }
\n if (this.downloadTask) {
\n request.agent.show(this.downloadTask.tid, (err: Error, taskInfo: request.agent.TaskInfo) => {
\n if (err) {
\n hilog.error(0x0000, TAG, 'agent show error:', err);
\n return;
\n }
\n });
\n }
\n }
\n private pauseCallback = (progress: request.agent.Progress) => {
\n this.isPaused = true;
\n this.downloading = false;
\n this.textState = $r("app.string.paused");
\n }
\n private resumeCallback = (progress: request.agent.Progress) => {
\n this.isPaused = false;
\n this.textState = $r("app.string.downloading");
\n this.downloading = true;
\n }
\n private progressCallback = (progress: request.agent.Progress) => {
\n this.textState = $r("app.string.downloading");
\n this.downloading = true;
\n this.isShow = true;
\n if (this.downloadTask) {
\n if (this.sFileSize === '-') {
\n if (progress.sizes[0] === -1) {
\n this.sFileSize = -1;
\n this.nCurrentDownloadSize = 0;
\n this.nFileSize = 1;
\n } else {
\n this.nFileSize = progress.sizes[0];
\n this.sFileSize = (progress.sizes[0] \/ BYTE_CONVERSION).toFixed() + 'kb';
\n this.nCurrentDownloadSize = progress.processed;
\n }
\n } else if (this.sFileSize === -1) {
\n hilog.info(0x0000, TAG, 'file size unknown');
\n } else {
\n this.nCurrentDownloadSize = progress.processed;
\n }
\n this.sCurrentDownloadSize = (progress.processed \/ BYTE_CONVERSION).toFixed() + 'kb';
\n }
\n }
\n private responseCallback = (response: request.agent.HttpResponse) => {
\n hilog.info(0x0000, TAG, 'response:' + response.statusCode);
\n };<\/p>\n

updateProgress() {
\n setTimeout(() => {
\n if (this.textState == $r("app.string.paused")) {
\n this.isPaused = true;
\n return;
\n }
\n let tmp = this.nCurrentDownloadSize \/ this.nFileSize * 100;
\n if (tmp <= this.progress) {
\n return;
\n }
\n this.progress = tmp;
\n }, 10)
\n }<\/p>\n

aboutToAppear(): void {
\n this.fileName = getFileNameFromUrl(this.downloadConfig.url);
\n }<\/p>\n

onDownLoadUpdated(): void {
\n if (this.isStartAllDownload) {
\n if (this.textState === $r("app.string.download_fail")) {
\n this.downloadTask = undefined;
\n this.isShow = false;
\n this.textState = "";
\n }
\n this.startDownload();
\n } else {
\n if (this.downloadFailCount > 0 && this.downloadFailCount === this.downloadCount) {
\n this.downloadFailCount = 0;
\n } else {
\n this.pauseDownload();
\n }
\n }
\n }<\/p>\n

startDownload(): void {
\n if (this.downloadTask === undefined) {
\n request.agent.create(context, this.downloadConfig).then((task: request.agent.Task) => {
\n task.on('completed', this.completedCallback);
\n task.on('failed', this.failedCallback);
\n task.on('pause', this.pauseCallback);
\n task.on('resume', this.resumeCallback);
\n task.on('progress', this.progressCallback);
\n task.on('response', this.responseCallback);<\/p>\n

task.start().then(() => {
\n this.downloadTask = task;
\n }).catch((err: Error) => {
\n hilog.error(0x0000, TAG, 'task start error:', err);
\n })
\n }).catch((err: Error) => {
\n hilog.error(0x0000, TAG, 'create error:', err);
\n });
\n } else {
\n this.resumeDownload();
\n }
\n }<\/p>\n

pauseOrResumeDownload(): void {
\n if (this.downloadTask) {
\n request.agent.show(this.downloadTask.tid, (err: Error, taskInfo: request.agent.TaskInfo) => {
\n if (err) {
\n hilog.error(0x0000, TAG, 'agent show error:', err);
\n return;
\n }
\n if (taskInfo.progress.state === request.agent.State.PAUSED) {
\n this.resumeDownload();
\n } else {
\n this.pauseDownload();
\n }
\n });
\n }
\n }<\/p>\n

pauseDownload(): void {
\n if (this.downloadTask) {
\n request.agent.show(this.downloadTask.tid, (err: Error, taskInfo: request.agent.TaskInfo) => {
\n if (err) {
\n hilog.error(0x0000, TAG, 'agent show error:', err);
\n return;
\n }
\n if (this.downloadTask && (taskInfo.progress.state === request.agent.State.WAITING || taskInfo.progress.state
\n === request.agent.State.RUNNING || taskInfo.progress.state === request.agent.State.RETRYING)) {
\n this.downloadTask.pause().then(() => {
\n }).catch((err: Error) => {
\n hilog.error(0x0000, TAG, 'task pause error:', err);
\n });
\n }
\n });
\n }
\n }<\/p>\n

resumeDownload(): void {
\n if (this.downloadTask) {
\n request.agent.show(this.downloadTask.tid, (err: Error, taskInfo: request.agent.TaskInfo) => {
\n if (err) {
\n hilog.error(0x0000, TAG, 'agent show error:', err);
\n return;
\n }
\n if (this.downloadTask && taskInfo.progress.state === request.agent.State.PAUSED) {
\n this.downloadTask.resume().then(() => {
\n }).catch((err: Error) => {
\n hilog.error(0x0000, TAG, 'task resume error:', err);
\n });
\n }
\n });
\n }
\n }<\/p>\n

build() {
\n RelativeContainer() {
\n Image($r('app.media.multiple_files_download_file'))
\n .height($r("app.integer.multiple_files_download_image_size"))
\n .width($r("app.integer.multiple_files_download_image_size"))
\n .id('fileImage')
\n .alignRules({
\n center: { anchor: '__container__', align: VerticalAlign.Center }
\n })<\/p>\n

Text(this.fileName)
\n .fontSize($r("app.integer.multiple_files_download_text_font_size"))
\n .padding({ left: $r("app.integer.multiple_files_download_padding") })
\n .alignRules({
\n left: { anchor: 'fileImage', align: HorizontalAlign.End },
\n top: { anchor: 'fileImage', align: VerticalAlign.Top },
\n })
\n .fontWeight(FontWeight.Medium)
\n .margin({ top: $r('app.integer.item_name_top_margin') })
\n .id('fileName')<\/p>\n

ProgressButton({
\n paused: this.isPaused,
\n progress: this.progress,
\n progressButtonWidth: $r('app.integer.progress_btn_width'),
\n content: this.textState,
\n enable: true,
\n clickCallback: () => {
\n this.pauseOrResumeDownload();
\n }
\n })
\n .visibility(this.isShow ? Visibility.Visible : Visibility.Hidden)
\n .alignRules({
\n right: { anchor: '__container__', align: HorizontalAlign.End },
\n center: { anchor: '__container__', align: VerticalAlign.Center }
\n })<\/p>\n

Text(this.sCurrentDownloadSize + "\/" + this.sFileSize)
\n .fontSize($r('app.integer.multiple_files_download_text_font_size_fourteen'))
\n .width($r('app.string.multiple_files_download_text_width'))
\n .fontColor($r('app.color.multiple_files_download_text_font_color'))
\n .margin({ top: $r("app.integer.multiple_files_download_margin_top") })
\n .padding({ left: $r("app.integer.multiple_files_download_padding") })
\n .alignRules({
\n top: { anchor: 'fileName', align: VerticalAlign.Bottom },
\n left: { anchor: 'fileImage', align: HorizontalAlign.End }
\n })
\n .id('downloadVal')<\/p>\n

}
\n .height($r('app.integer.item_height'))
\n .margin({ left: 16, right: 16 })
\n .padding({ left: 12, right: 12 })
\n }
\n} <\/p>\n

2.3\u00a0\u00a0ProgressButton.ets,\u8fd9\u4e2a\u81ea\u5b9a\u4e49\u7684\u7ec4\u5efa\u5b9e\u73b0\u4e86：\u663e\u793a\u4e0b\u8f7d\u8fdb\u5ea6\u767e\u5206\u6bd4，\u6839\u636e\u72b6\u6001\u663e\u793a\u4e0d\u540c\u6587\u672c（\u4e0b\u8f7d\u4e2d\/\u6682\u505c\/\u5b8c\u6210），\u63d0\u4f9b\u70b9\u51fb\u56de\u8c03\u529f\u80fd\u3002<\/p>\n

\u7b80\u5355\u8bf4\u660e：<\/p>\n

\u4f7f\u7528HarmonyOS\u7684Progress\u7ec4\u4ef6\u663e\u793a\u8fdb\u5ea6\u6761<\/p>\n

\u6839\u636e\u8fdb\u5ea6\u503c\u81ea\u52a8\u66f4\u65b0\u663e\u793a\u6587\u672c<\/p>\n

\u652f\u6301\u542f\u7528\/\u7981\u7528\u72b6\u6001<\/p>\n

\u63d0\u4f9b\u5706\u89d2\u80f6\u56ca\u6837\u5f0f<\/p>\n<\/p>\n

const EMPTY_STRING: string = '';
\nconst MAX_PROGRESS: number = 100;
\nconst MAX_PERCENTAGE: string = '100%';
\nconst MIN_PERCENTAGE: string = '0%';
\nconst TEXT_OPACITY: number = 0.4;
\nconst BUTTON_NORMAL_WIDTH: number = 44;
\nconst BUTTON_NORMAL_HEIGHT: number = 28;
\nconst BUTTON_BORDER_RADIUS: number = 14;
\nconst TEXT_ENABLE: number = 1.0;
\nconst MIN_WIDTH: Length = 44;
\nconst PADDING_TEXT: Length = 8;<\/p>\n

const PROGRESS_BUTTON_PROGRESS_KEY = 'progress_button_progress_key';
\nconst PROGRESS_BUTTON_PRIMARY_FONT_KEY = 'progress_button_primary_font_key';
\nconst PROGRESS_BUTTON_CONTAINER_BACKGROUND_COLOR_KEY = 'progress_button_container_background_color_key';
\nconst PROGRESS_BUTTON_EMPHASIZE_SECONDARY_BUTTON_KEY = 'progress_button_emphasize_secondary_button_key';<\/p>\n

@Component
\nexport struct ProgressButton {
\n @Prop @Watch('updateText') paused: boolean = false;
\n @Prop @Watch('getProgressContext') progress: number;
\n @State textProgress: string = EMPTY_STRING;
\n @Prop content: string | Resource = EMPTY_STRING;
\n @State isLoading: boolean = false;
\n progressButtonWidth?: Length = BUTTON_NORMAL_WIDTH;
\n clickCallback: () => void = () => {
\n };
\n @Prop enable: boolean = true;
\n @State progressColor: ResourceColor = '#330A59F7';
\n @State containerBorderColor: ResourceColor = '#330A59F7';
\n @State containerBackgroundColor: ResourceColor = $r('sys.color.ohos_id_color_foreground_contrary');<\/p>\n

private getButtonProgress(): number {
\n if (this.progress < 0) {
\n return 0;
\n } else if (this.progress > MAX_PROGRESS) {
\n return MAX_PROGRESS;
\n }
\n return this.progress;
\n }<\/p>\n

updateText() {
\n if (this.paused) {
\n setTimeout(() => {
\n this.isLoading = !this.paused;
\n }, 10);
\n } else {
\n this.isLoading = !this.paused;
\n }
\n }<\/p>\n

private getProgressContext() {
\n if (this.progress < 0) {
\n this.isLoading = false;
\n this.textProgress = MIN_PERCENTAGE;
\n } else if (this.progress >= MAX_PROGRESS) {
\n this.isLoading = false;
\n this.textProgress = MAX_PERCENTAGE;
\n } else {
\n this.isLoading = true;
\n this.textProgress = Math.floor(this.progress \/ MAX_PROGRESS * MAX_PROGRESS).toString() + "%";
\n }
\n }<\/p>\n

build() {
\n Button() {
\n Stack() {
\n Progress({
\n value: this.getButtonProgress(), total: MAX_PROGRESS,
\n style: ProgressStyle.Capsule
\n })
\n .height(BUTTON_NORMAL_HEIGHT)
\n .borderRadius(BUTTON_BORDER_RADIUS)
\n .width('100%')
\n .hoverEffect(HoverEffect.None)
\n .clip(false)
\n .enabled(this.enable)
\n .key(PROGRESS_BUTTON_PROGRESS_KEY)
\n .color(this.progressColor)
\n Text(this.isLoading ? this.textProgress : this.content)
\n .fontSize($r('sys.float.ohos_id_text_size_button3'))
\n .fontWeight(FontWeight.Medium)
\n .key(PROGRESS_BUTTON_PRIMARY_FONT_KEY)
\n .maxLines(1)
\n .textOverflow({ overflow: TextOverflow.Ellipsis })
\n .padding({ left: PADDING_TEXT, right: PADDING_TEXT })
\n .opacity(this.enable ? TEXT_ENABLE : TEXT_OPACITY)<\/p>\n

Row()
\n .key(PROGRESS_BUTTON_CONTAINER_BACKGROUND_COLOR_KEY)
\n .backgroundColor(Color.Transparent)
\n .border({ width: 1, color: this.containerBorderColor })
\n .height(BUTTON_NORMAL_HEIGHT)
\n .borderRadius(BUTTON_BORDER_RADIUS)
\n .width('100%')
\n }
\n }
\n .borderRadius(BUTTON_BORDER_RADIUS)
\n .clip(false)
\n .hoverEffect(HoverEffect.None)
\n .key(PROGRESS_BUTTON_EMPHASIZE_SECONDARY_BUTTON_KEY)
\n .backgroundColor(this.containerBackgroundColor)
\n .constraintSize({ minWidth: MIN_WIDTH })
\n .width((!this.progressButtonWidth || this.progressButtonWidth < BUTTON_NORMAL_WIDTH) ?
\n BUTTON_NORMAL_WIDTH : this.progressButtonWidth)
\n .stateEffect(this.enable)
\n .onClick(() => {
\n if (!this.enable) {
\n return;
\n }
\n if (this.progress < MAX_PROGRESS) {
\n this.isLoading = !this.isLoading;
\n }
\n this.clickCallback && this.clickCallback();
\n })
\n }
\n} <\/p>\n

2.4\u00a0 module.json5\u6743\u9650\u9700\u8981\u6dfb\u52a0ohos.permission.INTERNET<\/p>\n

{
\n "module": {
\n "name": "entry",
\n "type": "entry",
\n "description": "$string:module_desc",
\n "mainElement": "EntryAbility",
\n "deviceTypes": [
\n "phone"
\n ],
\n "requestPermissions": [
\n {
\n "name": "ohos.permission.INTERNET",
\n "reason": "$string:reason_internet",
\n "usedScene": {
\n "abilities": [
\n "EntryAbility"
\n ],
\n "when": "always"
\n }
\n },
\n ],
\n "deliveryWithInstall": true,
\n "installationFree": false,
\n "pages": "$profile:main_pages",
\n "abilities": [
\n {
\n "name": "EntryAbility",
\n "srcEntry": ".\/ets\/entryability\/EntryAbility.ets",
\n "description": "$string:EntryAbility_desc",
\n "icon": "$media:layered_image",
\n "label": "$string:EntryAbility_label",
\n "startWindowIcon": "$media:startIcon",
\n "startWindowBackground": "$color:start_window_background",
\n "exported": true,
\n "skills": [
\n {
\n "entities": [
\n "entity.system.home"
\n ],
\n "actions": [
\n "action.system.home"
\n ]
\n }
\n ]
\n }
\n ]
\n }
\n} <\/p>\n

\u4e09\u3001\u6f14\u793a\u6548\u679c,\u4e0b\u8f7d\u5730\u5740\u6570\u7ec4\u91cc\u53ea\u7528\u5199\u4e861\u4e2a，\u6240\u4ee5\u53ea\u67091\u4e2a\u6587\u4ef6，\u9700\u8981\u7684\u53ef\u4ee5\u81ea\u884c\u6dfb\u52a0\u3002<\/p>\n

\"\"<\/p>\n<\/p>\n

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