HarmonyOS鸿蒙Next中文件预览现是否支持不打开新窗口预览

HarmonyOS鸿蒙Next中文件预览现是否支持不打开新窗口预览

readWriteFile(srcFileString: string, destFileString: string, fileName: string): void {
  console.log(destFileString, 'wudibawanglong', fileName)
  let destPath = getContext(this).resourceDir + '/fang.txt'
  if (!fs.accessSync(destPath)) {
    console.log('不存在')
  }
  console.log(JSON.stringify(getContext(this).resourceDir), '11111111111')
  // 打开文件
  let srcFile = fs.openSync(srcFileString, fs.OpenMode.READ_WRITE | fs.OpenMode.CREATE);
  let destFile = fs.openSync(destFileString, fs.OpenMode.READ_WRITE | fs.OpenMode.CREATE);
  let context = getContext(this) as common.UIAbilityContext;
  let mType: string = '';
  let bufSize = 4096;
  let readSize = 0;
  let buf = new ArrayBuffer(bufSize);
  let readOptions: ReadOptions = {
    offset: readSize,
    length: bufSize
  };
  let readLen = fs.readSync(srcFile.fd, buf, readOptions);
  let uri = fileUri.getUriFromPath(destFileString);
  console.log(uri,'555555555555555')
  let fileInfo: filePreview.PreviewInfo = {
    title: fileName,
    uri: uri,
    mimeType: mType
  };
  while (readLen > 0) {
    readSize += readLen;
    let writeOptions: WriteOptions = {
      length: readLen
    };
    fs.writeSync(destFile.fd, buf, writeOptions);
    readOptions.offset = readSize;
    readLen = fs.readSync(srcFile.fd, buf, readOptions);
  }
  filePreview.openPreview(context, fileInfo).then(() => {
    hilog.info(0x0000, TAG, 'openPreview success');
  }).catch((err: BusinessError) => {
    console.log(JSON.stringify(fileInfo), 'wudibawanglong')
    hilog.error(0x0000, TAG, 'openPreview failed, err = %s', err.message);
  });
}

Text("点击唤起文件选择器")
  .fontSize(px2fp(42))
  .fontWeight(FontWeight.Bold)
  .alignRules({
    center: { anchor: '__container__', align: VerticalAlign.Center },
    middle: { anchor: '__container__', align: HorizontalAlign.Center }
  })
  .onClick(() => {
    const documentSelectOptions = new picker.DocumentSelectOptions();
    // 选择文档的最大数目（可选）
    documentSelectOptions.maxSelectNumber = 5;
    // 指定选择的文件或者目录路径（可选）
    documentSelectOptions.defaultFilePathUri = "file://docs/storage/Users/currentUser/test";
    // 选择文件的后缀类型['后缀类型描述|后缀类型']（可选） 若选择项存在多个后缀名，则每一个后缀名之间用英文逗号进行分隔（可选），后缀类型名不能超过100,选择所有文件：'所有文件(*.*)|.*';
    documentSelectOptions.fileSuffixFilters = ['.xlsx'];
    //选择是否对指定文件或目录授权，true为授权，当为true时，defaultFilePathUri为必选参数，拉起文管授权界面；false为非授权，拉起常规文管界面（可选）
    documentSelectOptions.authMode = false;

    let pathUri: Array<string> = [];
    let context = getContext(this) as common.Context;
    let baseDir = "/data/storage/el2/base/files/";
    // 创建文件选择器实例
    const documentViewPicker = new picker.DocumentViewPicker(context);
    documentViewPicker.select(documentSelectOptions).then((documentSelectResult: Array<string>) => {
      //文件选择成功后，返回被选中文档的uri结果集。
      pathUri = documentSelectResult;
      console.log('文件打印', JSON.stringify(pathUri))
      const filePath = pathUri[0]
      let fileName: string = filePath.split('/').pop() as string
      this.readWriteFile(pathUri[0], baseDir + fileName, fileName)
      console.log(pathUri[0], fileName + 'wudu')
      // fs.copy(pathUri[0],baseDir)
      console.info('documentViewPicker.select to file succeed and uris are:' + pathUri);
    }).catch((err: BusinessError) => {
      console.error(`Invoke documentViewPicker.select failed, code is ${err.code}, message is ${err.message}`);
    })
  })

filePreview.openPreview方法好像只能支持在一个新窗口打开并预览上传文件,怎么能让它打开的这个窗口嵌入页面内呢,或者有没有别的方法做这个文件预览的事情