How to programmatically get the version of an app on Huawei AppGallery?

Question

I know how it can be done for Google Play Store (answer here), but i didn't manage to find a way for AppGallery. Thank you!

UPDATE #1

Using the answer below i partially solve this with this steps:

1. Make an API Client with Administrator role, it also works with App Administrator and Operations. (documentaion here: API Client)
2. Get the access token. (documentaion here: Obtaining a Token)
3. Get app info. (documentaion here: Querying App Information)

The response from the Querying App Information, have a lot of informations about the app including "versionNumber", but for me it doesn't provide the "versionNumber" (the single info i needed), because this parameter is optional. And now i am stuck again, because i don't understand what i need to change in order to receive this one.

If anyone knows how I can solve this, thank you very much for your help.

UPDATE #2

@shirley's comment was right. The issue has been fixed in their latest release, and it has been released this month.

Answer 1

You can call the Querying App Information API (GET mode) to query the app details：

public static void getAppInfo(String domain, String clientId, String token, String appId, String lang) {
     HttpGet get = new HttpGet(domain + "/publish/v2/app-info?appid=" + appId + "&lang=" + lang);
     get.setHeader("Authorization", "Bearer " + token);
     get.setHeader("client_id", clientId);
     try {
         CloseableHttpClient httpClient = HttpClients.createDefault();
         CloseableHttpResponse httpResponse = httpClient.execute(get);
         int statusCode = httpResponse.getStatusLine().getStatusCode();
         if (statusCode == HttpStatus.SC_OK) {
             BufferedReader br =
                     new BufferedReader(new InputStreamReader(httpResponse.getEntity().getContent(), Consts.UTF_8));
             String result = br.readLine();
             // Object returned by the app information query API, which can be received using the AppInfo object. For details, please refer to the API reference.
             JSONObject object = JSON.parseObject(result);
             System.out.println(object.get("ret"));
         }
     } catch (Exception e) {
     }
 }

They are mentioned here: Completing App Information, Querying App Information.