请求通知授权

应用需要获取用户授权才能发送通知。在通知发布前调用requestEnableNotification()接口，弹窗让用户选择是否允许发送通知。当用户拒绝授权后，将无法通过该接口再次拉起弹窗。如果应用需要向用户再次申请通知授权，则可以使用openNotificationSettings接口拉起通知管理半模态弹窗。

接口说明

接口详情参见API参考。

表1 通知授权接口功能介绍

接口名	描述
isNotificationEnabled():Promise<boolean>	查询通知是否授权。
requestEnableNotification(context: UIAbilityContext): Promise<void>	请求发送通知的许可，第一次调用会弹窗让用户选择。
openNotificationSettings(context: UIAbilityContext): Promise<void>	拉起通知管理弹窗。

开发步骤

导入NotificationManager模块。

import { notificationManager } from '@kit.NotificationKit';
import { BusinessError } from '@kit.BasicServicesKit';
import { hilog } from '@kit.PerformanceAnalysisKit';
import { common } from '@kit.AbilityKit';

const TAG: string = '[PublishOperation]';
const DOMAIN_NUMBER: number = 0xFF00;

RequestEnableNotification.ets

拉起通知弹窗，向用户请求通知授权。

可通过requestEnableNotification的错误码判断用户是否授权。若返回的错误码为1600004，即为拒绝授权。

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

RequestEnableNotification.ets

（可选）拉起通知管理半模态弹窗，向用户再次申请通知授权。

let context = this.getUIContext().getHostContext() as common.UIAbilityContext;
notificationManager.isNotificationEnabled().then((data: boolean) => {
  hilog.info(DOMAIN_NUMBER, TAG, 'isNotificationEnabled success, data: ' + JSON.stringify(data));
  if (!data) {
    notificationManager.openNotificationSettings(context).then(() => {
      hilog.info(DOMAIN_NUMBER, TAG, `[ANS] openNotificationSettings success`);
    }).catch((err: BusinessError) => {
      hilog.error(DOMAIN_NUMBER, TAG,
        `[ANS] openNotificationSettings failed, code is ${err.code}, message is ${err.message}`);
    });
  }
}).catch((err: BusinessError) => {
  hilog.error(DOMAIN_NUMBER, TAG,
    `isNotificationEnabled fail, code is ${err.code}, message is ${err.message}`);
});

RequestEnableNotification.ets