HarmonyOS 文件选择器，设置最大选择数，没效果

使用以下demo试试

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
            // let documentPicker = new picker.DocumentViewPicker();
            example07(context)
          })
      }
      .width('100%')
    }
    .height('100%')
  }
}

async function example07(context: common.Context) { // 需确保 context 由 UIAbilityContext 转换而来
  try {
    let documentSelectOptions = new picker.DocumentSelectOptions();
    documentSelectOptions.maxSelectNumber = 3
    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));
  }
}
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
33.
34.
35.
36.
37.
38.
39.
40.
41.
42.