HarmonyOS 相册权限检查、申请问题

//  检查某一权限 -> boolean 
async function AppPermissionCheck(permission: Permissions): Promise<boolean> { 
  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) { 
    console.error(`Failed to get bundle info for self. Code is ${error}`); 
  } 
  // 校验应用是否被授予权限 
  try { 
    grantStatus = await atManager.checkAccessToken(tokenId, permission); 
  } catch (error) { 
    console.error(`Failed to check access token. Code is ${error}`); 
  } 
 
  return grantStatus === abilityAccessCtrl.GrantStatus.PERMISSION_GRANTED 
}

//  请求某权限 -> boolean 
async function AppPermissionReqOne(permission: Permissions, context: common.UIAbilityContext): Promise<boolean> { 
  try { 
    let atManager: abilityAccessCtrl.AtManager = abilityAccessCtrl.createAtManager(); 
    let ret = await atManager.requestPermissionsFromUser(context, [permission]) 
    let grantStatus: Array<number> = ret.authResults; 
    return grantStatus[0] === 0 
  } catch (e) { 
    return false 
  } 
}