鸿蒙开发 如何获取versionName与versionCode？

    "reqPermissions": [
      {
        "name": "ohos.permission.GET_BUNDLE_INFO"
      }
    ],
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        try {
            BundleInfo bundleInfo = getBundleManager().getBundleInfo(getBundleName(), 0);
            String versionName = "版本名：" + bundleInfo.getVersionName();
            String versionCode = "版本号：" + bundleInfo.getVersionCode();
        } catch (RemoteException e) {
            e.printStackTrace();
        }
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