HarmonyOS 鸿蒙Next Notification Kit创建通知栏的几个问题

尝试这个demo呢：

import { notificationManager } from '@kit.NotificationKit';
import Base from '@ohos.base';
import wantAgent from '@ohos.app.ability.wantAgent';
import { WantAgent } from '@ohos.app.ability.wantAgent';
// 通过WantAgentInfo的operationType设置动作类型
@Entry
@Component
struct Index {
  @State message: string = 'Hello World';
  @StorageLink('test') test: object = new Object;
  publishNotification() {
    notificationManager.requestEnableNotification().then(() => {
      let wantAgentInfo: wantAgent.WantAgentInfo = {
        wants: [
          {
            deviceId: '',
            bundleName: 'com.example.testnotice',
            abilityName: 'EntryAbility',
            action: '',
            entities: [],
            uri: '',
            parameters: {
              title: 'xxxx'
            }
          }
        ],
        operationType: wantAgent.OperationType.START_ABILITY,
        requestCode: 0,
        wantAgentFlags: [wantAgent.WantAgentFlags.CONSTANT_FLAG]
      };
      wantAgent.getWantAgent(wantAgentInfo).then((data: WantAgent) => {
        let notificationRequest: notificationManager.NotificationRequest = {
          id: 1,
          content: {
            notificationContentType: notificationManager.ContentType.NOTIFICATION_CONTENT_BASIC_TEXT,
            normal: {
              title: '加入购物车成功',
              text: '已加入购物车',
            }
          },
          notificationSlotType: notificationManager.SlotType.SOCIAL_COMMUNICATION,
          wantAgent: data,
        }
        notificationManager.publish(notificationRequest).then(() => {
          console.info('publish success');
        }).catch((err: Error) => {
          console.error(`publish failed,message is ${err}`);
        });
      })
    }).catch((err: Base.BusinessError) => {
      console.error(`requestEnableNotification fail: ${JSON.stringify(err)}`);
    });
  }
  build() {
    Column() {
      Text('test')
        .fontSize(50)
        .onClick(() => {
          console.info('test value:' + this.test);
        })
      Text(this.message)
        .id('HelloWorld')
        .fontSize(50)
        .fontWeight(FontWeight.Bold)
        .onClick(() => {
          this.publishNotification();
        })
    }
    .height('100%')
    .width('100%')
  }
}