HarmonyOS 从html中input的accept是audio/*的标签上点击后获取到acceptType 是个数组，这个数组可以转成字符串传给want吗

从html中input的accept是audio/*的标签上点击后获取到acceptType 是个数组，这个数组可以转成字符串传给want吗

import { UIExtensionAbility, Want } from '@kit.AbilityKit';
import { BusinessError } from '@kit.BasicServicesKit';

export default class EntryAbility extends UIExtensionAbility {
  private arr = ['text/xml','image/*']

  onForeground() {
    let want: Want = {
      bundleName: 'com.example.myapplication',
      abilityName: 'EntryAbility',
      type: arr .join(',')
    };

    try {
      this.context.startAbility(want, (err: BusinessError) => {
        if (err.code) {
          // 处理业务逻辑错误
          console.error(`startAbility failed, code is ${err.code}, message is ${err.message}`);
          return;
        }
        // 执行正常业务
        console.info('startAbility succeed');
      });
    } catch (err) {
      // 处理入参错误异常
      let code = (err as BusinessError).code;
      let message = (err as BusinessError).message;
      console.error(`startAbility failed, code is ${code}, message is ${message}`);
    }
  }
}