HarmonyOS 鸿蒙Next 使用 DocumentViewPicker select 配置 fileSuffixFilters 为自定义文件后缀名无法显示

我无法复现你说的问题，我目前尝试的demo如下:

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

@Entry
@Component
struct Index {
  @State message: string = 'hello World';

  build() {
    Row() {
      Column() {
        Text(this.message)
          .fontSize(50)
          .fontWeight(FontWeight.Bold)
          .onClick(() => {
            let context = getContext(this) as common.Context; // 请确保getContext(this)返回结果为UIAbilityContext
            select(context)
          })
      }
      .width('100%')
    }
    .height('100%')
  }
}

async function select(context: common.Context) {
  // 需确保 context 由 UIAbilityContext 转换而来
  try {
    let documentSelectOptions = new picker.DocumentSelectOptions();
    documentSelectOptions.fileSuffixFilters = ['.aaa']
    let documentPicker = new picker.DocumentViewPicker(context);
    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));
  }
}

我先是使用apk作为后缀，可以选择到我下载里面的apk文件，后面我把apk文件的后缀重命名改成aaa，然后用上面的demo代码跑，结果也能搜索到先前从apk改成aaa后缀的文件，所以你说的情况在我这边不成立，能麻烦详细描述下你这边的具体情况或者demo代码吗，看看到底是哪个环节问题