GetLatestVersionNumber throws an exception

[ChristianM66]

Bug

Plugin Version: 2.1.1-beta.107
Platform: Android 12 (31-S)
Device/Hardware:

Expected behavior

CrossLatestVersion.Current.GetLatestVersionNumber() does not return the version number, instead it throws a Jurassic.JavaScriptException.

Actual behavior

{Plugin.LatestVersion.LatestVersionException: Fehler beim Parsen von Inhalten aus dem Play Store. Url=https://play.google.com/store/apps/details?id=com.ist.saleboard.mobile&hl=en. ---> Jurassic.JavaScriptException: TypeError: undefined cannot be converted to an object at Jurassic.TypeConverter.ToObject (Jurassic.ScriptEngine engine, System.Object value, System.Int32 lineNumber, System.String sourcePath, System.String functionName) [0x00037] in <018e8bf6db3d46cd85eb0a9bc95f4b3f>:0 at (wrapper dynamic-method) Jurassic. Compiler.MethodGenerator.anonymous(Jurassic.Compiler.ExecutionContext,object[]) at Jurassic.Library.UserDefinedFunction.CallLateBound (System.Object thisObject, System.Object[] argumentValues) [0x00014] in <018e8bf6db3d46cd85eb0a9bc95f4b3f>:0 at Jurassic. Library.FunctionInstance.CallWithStackTrace (System.String path, System.String function, System.Int32 line, System.Object thisObject, System.Object[] argumentValues) [0x0000f] in <018e8bf6db3d46cd85eb0a9bc95f4b3f>:0 at (wrapper dynamic-method) Jurassic. Compiler.MethodGenerator.anonymous(Jurassic.Compiler.ExecutionContext,object[]) at Jurassic.Library.UserDefinedFunction.CallLateBound (System.Object thisObject, System.Object[] argumentValues) [0x00014] in <018e8bf6db3d46cd85eb0a9bc95f4b3f>:0 at Jurassic. Library.FunctionInstance.CallWithStackTrace (System.String path, System.String function, System.Int32 line, System.Object thisObject, System.Object[] argumentValues) [0x0000f] in <018e8bf6db3d46cd85eb0a9bc95f4b3f>:0 at (wrapper dynamic-method) Jurassic. Compiler.MethodGenerator.eval(Jurassic.Compiler.ExecutionContext) at Jurassic.Compiler.GlobalOrEvalMethodGenerator.Execute (Jurassic.ScriptEngine engine, Jurassic.Compiler.RuntimeScope parentScope, System. Object thisObject) [0x00030] in <018e8bf6db3d46cd85eb0a9bc95f4b3f>:0 at Jurassic.ScriptEngine.Evaluate (Jurassic. ScriptSource source) [0x000a7] in <018e8bf6db3d46cd85eb0a9bc95f4b3f>:0 at Jurassic.ScriptEngine.Evaluate (System.String code) [0x00007] in <018e8bf6db3d46cd85eb0a9bc95f4b3f>:0 at Plugin. LatestVersion.LatestVersionImplementation.GetLatestVersionNumber () [0x001ff] in <7361502664264164a28b556feec777a7>:0 --- Ende der inneren Ausnahme Stack Trace --- at Plugin.LatestVersion.LatestVersionImplementation.GetLatestVersionNumber ()

Description:

[SamPollard94]

I am observing the same issue.

[idenardi]

#49 fixes this issue. It was merged but the NuGet package hasn't been published yet.

[bestekarx]

Is there a temporary solution?

[ejastre]

Is there a fix or a workaround for it? Thanks

[ivgomezarnedo]

Is there a fix or a workaround for it? Thanks

@ejastre You can use the following method instead of the NuGet package:
https://gist.github.com/ivgomezarnedo/44ee8b9a204f930245b945e039b77077

Then, compare the user's installed version with the latest available in Google Play with:

Boolean checkAppLastVersion()
{
    string app_last_version = null;
    app_last_version = getAppLastVersion_js();
    PackageInfo packageInfo = this.PackageManager.GetPackageInfo(this.PackageName, 0);
    string installed_versionNumber = packageInfo.VersionName.Trim();
    return app_last_version == null ? true : app_last_version == installed_versionNumber;
}

By the way, I have written about how I have implemented it (and how I have added a double check) in:
https://medium.com/@ivangomezarnedo/checking-app-version-on-google-play-83229c07577c

[marcogramy]

Please, when you plan to release the updated NuGet package with this fix?

[Stensan]

Any update on the NuGet package?

[bestekarx]

It doesn't work but here is my solution that I use for my project.

private async Task VersionControl()
 {
     try
     {
         var isCurrentVersion = true;
         if (Device.RuntimePlatform == Device.Android)
             isCurrentVersion = DependencyService.Get<ICustomAndroidVersionCheck>().GetAppLastVersion_js();
         else
         {
             var url = "http://itunes.apple.com/lookup?bundleId=com.companyname.app";
             using HttpClient client = new HttpClient();
             client.BaseAddress = new Uri(url);
             client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
             var response = await client.GetAsync(url);
             response.EnsureSuccessStatusCode(); // Optional: Throws exception if not successful
             var jsonResult = await response.Content.ReadAsStringAsync();
             var result = JsonConvert.DeserializeObject<AppStoreModel>(jsonResult);

             var appStoreVersion = Convert.ToDecimal(result.Results?.FirstOrDefault()?.Version.Replace(".", ""));
             var currentAppVersion = Convert.ToDecimal(VersionTracking.CurrentVersion.Replace(".", ""));

             if (currentAppVersion < appStoreVersion)
                 isCurrentVersion = false;
         }

         if (isCurrentVersion == false)
         {
             NavigationModel<VersionMessagePageViewParamModel> navigationModel = new NavigationModel<VersionMessagePageViewParamModel>
             {
                 Model = new VersionMessagePageViewParamModel(),

                 ClosedPageEventCommand = VersionMessagePageViewParamModel_ClosedPageEventCommand
             };
             await NavigationService.NavigateToBackdropAsync<VersionMessagePageViewModel>(navigationModel);
         }
     }
     catch (Exception ex)
     {
     }
 }

public class CustomAndroidVersionCheck : ICustomAndroidVersionCheck
{
    public bool GetAppLastVersion_js()
    {
        try
        {
            string url = $"https://play.google.com/store/apps/details?id={Android.App.Application.Context.PackageName}";
            // Use HttpClient to send a GET request to the URL
            HttpClient client = new HttpClient();
            HttpResponseMessage response = client.GetAsync(url).Result;

            // Read the response as a string
            var responseString = response.Content.ReadAsStringAsync().Result;

            var doc = new HtmlDocument();
            doc.LoadHtml(responseString);

            var scripts = doc.DocumentNode.Descendants()
                .Where(n => n.Name == "script" && n.InnerText.Contains("AF_initDataCallback({key: 'ds:5'"))
                .ToArray();

            var script = scripts.First().InnerText;
            var engine = new Jurassic.ScriptEngine();
            var eval = "(function() { var AF_initDataCallback = function(p) { return p.data[1][2][140][0][0][0]; };  return " + script + " })()";
            var result = engine.Evaluate(eval);
            var appVersionName = Android.App.Application.Context.ApplicationContext.PackageManager.GetPackageInfo(Android.App.Application.Context.ApplicationContext.PackageName, 0)
                ?.VersionName;
            var googlePlayVersion = Convert.ToInt32(result.ToString().Replace(".", ""));
            var currentAppVersion = Convert.ToInt32(appVersionName?.Replace(".", ""));
            return (currentAppVersion < googlePlayVersion) == false;
        }
        catch (Exception ex)
        {
            return true;
        }
    }
}

[HavenDV]

We were inspired by this library and made a continuation for MAUI, maybe it will be useful to someone - https://github.com/oscoreio/Maui.AppStoreInfo
We decided to abandon this implementation for Android and instead used Android In-App Updates to check for new versions specifically for the Android platform - https://github.com/oscoreio/Maui.Android.InAppUpdates