HarmonyOS 鸿蒙Next 如何在代码里设置应用图标的未读数？

1、先设置通知权限

let context = getContext(this) as common.UIAbilityContext;
notificationManager.isNotificationEnabled().then((data: boolean) => {
  hilog.info(1, TAG, "isNotificationEnabled success, data: " + JSON.stringify(data));
  if(!data){
    notificationManager.requestEnableNotification(context).then(() => {
      hilog.info(1, TAG, `[ANS] requestEnableNotification success`);
    }).catch((err : BusinessError) => {
      if(1600004 == err.code){
        hilog.error(1, TAG, `[ANS] requestEnableNotification refused, code is ${err.code}, message is ${err.message}`);
      } else {
        hilog.error(1, TAG, `[ANS] requestEnableNotification failed, code is ${err.code}, message is ${err.message}`);
      }
    });
  }
}).catch((err : BusinessError) => {
  hilog.error(1, TAG, `isNotificationEnabled fail, code is ${err.code}, message is ${err.message}`);
});

2、再设置角标显示

let badgeNumber: number = 10;
notificationManager.setBadgeNumber(badgeNumber).then(() => {
  console.info("setBadgeNumber success");
}).catch((err: BusinessError) => {
  console.error(`setBadgeNumber fail: ${JSON.stringify(err)}`);
});