平板的文件选择器无法调用出页面？HarmonyOS 鸿蒙Next

你平板的系统版本是多少？我这边写了个documentPicker.select()的相关demo，无法复现你说的问题，你可以拿我代码试一试

import { common } from '@kit.AbilityKit';
import { BusinessError } from '@kit.BasicServicesKit';
import { picker } from '@kit.CoreFileKit';

@Entry
@Component
struct Index {
  private context = this as common.UIAbilityContext;

  build() {
    Column() {
      Button('测试').onClick(() => {
        example(this.context)
      })
        .position({ x: 80, y: 100 })
        .height(100)
        .width(100)
    }.height('100%')
    .width('100%')
  }
}

export async function example(context: common.Context) { // 需确保 context 由 UIAbilityContext 转换而来
  try {
    let documentSelectOptions = new picker.DocumentSelectOptions();
    let documentPicker = new picker.DocumentViewPicker(context);
    documentSelectOptions.fileSuffixFilters = ['m4a', 'mp3', 'pdf'];
    documentSelectOptions.maxSelectNumber = 1
    documentPicker.select(documentSelectOptions).then((documentSelectResult: Array<string>) => {
      console.info('DocumentViewPicker.select successfully, documentSelectResult uri: ' +
      JSON.stringify(documentSelectResult));
    }).catch((err: BusinessError) => {
      console.error('DocumentViewPicker.select failed with err: ' + JSON.stringify(err));
    });
  } catch (error) {
    let err: BusinessError = error as BusinessError;
    console.error('DocumentViewPicker failed with err: ' + JSON.stringify(err));
  }
}