【HarmonyOS 5】鸿蒙应用实现发票扫描、文档扫描输出PDF图片或者表格的功能

import { DocType, DocumentScanner, DocumentScannerConfig, SaveOption, FilterId, ShootingMode, EditTab, DocumentScannerResultCallback } from "@kit.VisionKit";

private docScanConfig = new DocumentScannerConfig()
  setDocScanConfig() {
    this.docScanConfig.supportType = [DocType.DOC, DocType.SHEET]
    this.docScanConfig.isGallerySupported = true
    this.docScanConfig.editTabs = []
    this.docScanConfig.maxShotCount = 3
    this.docScanConfig.defaultFilterId = FilterId.ORIGINAL
    this.docScanConfig.defaultShootingMode = ShootingMode.MANUAL
    this.docScanConfig.isShareable = true
    this.docScanConfig.originalUris = []
  }

//文档扫描
        DocumentScanner({
          scannerConfig: this.docScanConfig,
          onResult: (code: number, saveType: SaveOption, uris: string[]) => {
            hilog.info(0x0001, TAG, `result code: ${code}, save: ${saveType}`)
            if (code === -1) {
              this.pathStack?.pop()
            }
            uris.forEach(uriString => {
              hilog.info(0x0001, TAG, `uri: ${uriString}`)
            })
            this.docImageUris = uris
          }
        })
          .size({ width: '100%', height: '100%' })

import { NavPathStack } from '@ohos.router';
import { DocDemoPage } from './DocDemoPage'; // 引入扫描实现页
@Entry
@Component
struct MainPage {
  // 导航栈管理页面跳转
  private pathStack: NavPathStack = new NavPathStack()
  build() {
    Navigation(this.pathStack) {
      Column({ space: 20 }) {
        // 标题
        Text('文档扫描Demo').fontSize(24).fontWeight(500);
        
        // 扫描入口按钮
        Button('开始扫描文档', { type: ButtonType.Capsule, stateEffect: true })
          .width('60%')
          .height(50)
          .onClick(() => {
            // 跳转到扫描页面
            this.pathStack.pushPath({ name: 'documentScanner' });
          });
      }
      .justifyContent(FlexAlign.Center)
      .width('100%')
      .height('100%');
    }
    .navDestination(this.PageMap)
    .mode(NavigationMode.Stack)
    .title('文档扫描示例');
  }
}

import { 
  DocType, DocumentScanner, DocumentScannerConfig, 
  SaveOption, FilterId, ShootingMode, EditTab 
} from "@kit.VisionKit";
import { hilog, LogLevel } from '@ohos.hilog'; // 日志工具
const TAG = 'DocScannerDemo'; // 日志标签
@Entry
@Component
export struct DocDemoPage {
  @State scanResults: string[] = []; // 保存扫描结果URI
  private pathStack: NavPathStack | null = null;
  // 扫描配置初始化
  private docScanConfig = new DocumentScannerConfig();
  // 页面加载时配置扫描参数
  aboutToAppear() {
    this.docScanConfig.supportType = [DocType.DOC, DocType.SHEET]; // 支持文档和表格识别
    this.docScanConfig.maxShotCount = 3; // 最多拍摄3张
    this.docScanConfig.isGallerySupported = true; // 允许从图库选图
    this.docScanConfig.defaultFilterId = FilterId.STRENGTHEN; // 默认增强滤镜
    this.docScanConfig.defaultShootingMode = ShootingMode.MANUAL; // 手动拍摄模式
    this.docScanConfig.editTabs = [EditTab.ROTATE_TAB, EditTab.RESHOOT_TAB]; // 显示旋转和重拍按钮
    this.docScanConfig.saveOptions = [SaveOption.JPG, SaveOption.PDF, SaveOption.EXCEL]; // 支持三种保存格式
    this.docScanConfig.isShareable = true; // 开启分享功能
  }
  build() {
    NavDestination({ name: 'documentScanner' }) {
      Stack() {
        // 扫描结果展示区域
        Column() {
          if (this.scanResults.length > 0) {
            Text('扫描结果').fontSize(18).fontWeight(500).margin({ top: 20 });
            Grid() {
              ForEach(this.scanResults, (uri, index) => {
                // 展示缩略图，点击可预览（示例中简化为日志输出）
                Image(uri)
                  .objectFit(ImageFit.Contain)
                  .width(150)
                  .height(150)
                  .margin(10)
                  .onClick(() => hilog.info(LogLevel.INFO, TAG, `预览图片：${uri}`));
              })
              .columnsTemplate('1fr 1fr') // 两行布局
              .rowGap(10)
              .columnGap(10);
          }
        }
        .width('100%')
        .padding(20);
        // 文档扫描控件主体
        DocumentScanner({
          scannerConfig: this.docScanConfig,
          onResult: (code: number, saveType: SaveOption, uris: string[]) => {
            hilog.info(LogLevel.INFO, TAG, `扫描结果：code=${code}, 格式=${SaveOption[saveType]}`);
            switch (code) {
              case 200: // 成功
                this.scanResults = uris; // 更新结果列表
                hilog.info(LogLevel.INFO, TAG, `保存路径：${uris.join(', ')}`);
                break;
              case -1: // 用户取消
                this.pathStack.pop(); // 返回上一页
                break;
              case 1008601001: // URI无效（5.0.5+支持）
                hilog.error(LogLevel.ERROR, TAG, '传入的图片规格不符合要求');
                break;
            }
          }
        })
        .size({ width: '100%', height: '100%' })
        .margin({ top: 80 }); // 留出结果展示区域空间
      }
      .width('100%')
      .height('100%')
      .hideTitleBar(true); // 隐藏导航栏
      .onReady((context: NavDestinationContext)=>{
              this.pathStack = context?.pathStack;
        })
  }
}