如何拉起选择图片的界面，并选择图片、视频？

import picker from '@ohos.file.picker';
/**
 * 通过选择模式拉起PhotoViewPicker界面，用户可以选择一个或多个图片/视频。
 * @param options
 * @returns
 */
static async selectPhoto(options?: picker.PhotoSelectOptions): Promise<Array<string>> {
  try {
    if (!options) {
      options = new picker.PhotoSelectOptions();
    }
    if (!options.MIMEType) { //可选择的媒体文件类型，若无此参数，则默认为图片和视频类型。
      options.MIMEType = picker.PhotoViewMIMETypes.IMAGE_TYPE;
    }
    if (!options.maxSelectNumber) { //选择媒体文件数量的最大值,默认9
      options.maxSelectNumber = DOCUMENT_DEFAULT_SELECT_NUMBER;
    }
    let photoPicker = new picker.PhotoViewPicker();
    let photoSelectResult: picker.PhotoSelectResult = await photoPicker.select(options);
    if (photoSelectResult && photoSelectResult.photoUris && photoSelectResult.photoUris.length > 0) {
      return photoSelectResult.photoUris;
    } else {
      return [];
    }
  } catch (err) {
    let error = err as BusinessError;
    LogUtil.error(`PickerUtil-selectPhoto-异常 ~ code: ${error.code} -·- message: ${error.message}`);
    return [];
  }
}