HarmonyOS 鸿蒙Next：申请ohos.permission.READ_WRITE_DOCUMENTS_DIRECTORY权限后无法立即创建文件夹，提示权限未获取，再次进入App可正常创建

HarmonyOS 鸿蒙Next：申请ohos.permission.READ_WRITE_DOCUMENTS_DIRECTORY权限后无法立即创建文件夹，提示权限未获取，再次进入App可正常创建

class baseData {
  permissions: Array<Permissions> = ['ohos.permission.READ_WRITE_DOCUMENTS_DIRECTORY'];
}

reqPermissionsFromUser() {
  let atManager: abilityAccessCtrl.AtManager = abilityAccessCtrl.createAtManager();
  atManager.requestPermissionsFromUser(getContext(this) as common.UIAbilityContext, baseData.permissions)
    .then(async (data) => {
      let grantStatus: Array<number> = data.authResults;
      let length: number = grantStatus.length;
      for (let i = 0; i < length; i++) {
        if (grantStatus[i] === 0) {
          // 用户授权，可以继续访问目标操作
          let documentsPath = Environment.getUserDocumentDir();
          let baseUrl = documentsPath + "/files";
          fs.mkdir(baseUrl, (err: BusinessError) => {
            if (err) {
              // 提示没有权限，创建失败。再次进入App则可以正常创建
              console.error("mkdir failed with error message: " + err.message + ", error code: " + err.code);
            } else {
              console.info("mkdir succeed");
              AppStorage.setOrCreate('baseFileUrl', baseUrl)
              this.creteDir(baseUrl)
            }
          })
        } else {
          // 用户拒绝授权，提示用户必须授权才能访问当前页面的功能，并引导用户到系统设置中打开相应的权限

        }
      }
    })
    .catch((err: BusinessError) => {
      console.error(`Failed to request permissions from user. Code is ${err.code}, message is ${err.message}`);
    })
}

async aboutToAppear() {
  this.reqPermissionsFromUser();
}