HarmonyOS 鸿蒙Next 蓝牙权限开关监听

可以参考下面案例：https://developer.huawei.com/consumer/cn/doc/harmonyos-guides-V5/request-user-authorization-V5

import { abilityAccessCtrl, bundleManager, Permissions } from '[@kit](/user/kit).AbilityKit';
import { BusinessError } from '[@kit](/user/kit).BasicServicesKit';

const permissions: Array<Permissions> = ['ohos.permission.ACCESS_BLUETOOTH'];

async function checkPermissionGrant(permission: Permissions): Promise<abilityAccessCtrl.GrantStatus> {
  let atManager: abilityAccessCtrl.AtManager = abilityAccessCtrl.createAtManager();
  let grantStatus: abilityAccessCtrl.GrantStatus = abilityAccessCtrl.GrantStatus.PERMISSION_DENIED;
  // 获取应用程序的accessTokenID
  let tokenId: number = 0;
  try {
    let bundleInfo: bundleManager.BundleInfo =
      await bundleManager.getBundleInfoForSelf(bundleManager.BundleFlag.GET_BUNDLE_INFO_WITH_APPLICATION);
    let appInfo: bundleManager.ApplicationInfo = bundleInfo.appInfo;
    tokenId = appInfo.accessTokenId;
  } catch (error) {
    const err: BusinessError = error as BusinessError;
    console.error(`Failed to get bundle info for self. Code is ${err.code}, message is ${err.message}`);
  }

  // 校验应用是否被授予权限
  try {
    grantStatus = await atManager.checkAccessToken(tokenId, permission);
  } catch (error) {
    const err: BusinessError = error as BusinessError;
    console.error(`Failed to check access token. Code is ${err.code}, message is ${err.message}`);
  }
  return grantStatus;
}

async function checkPermissions(): Promise<void> {
  let grantStatus: abilityAccessCtrl.GrantStatus = await checkPermissionGrant(permissions[0]);
  if (grantStatus === abilityAccessCtrl.GrantStatus.PERMISSION_GRANTED) {
    // 已经授权，可以继续访问目标操作
  } else {
    // 申请麦克风权限
  }
}

在系统设置修改了应用权限，三方应用无法监听到权限变化的。只有重新进入时通过上面代码判断是否开启相关权限