Xamarin.Forms "New Version Available" popup

Question

I am working on an Xamarin.forms Android project, I am looking to display a popup for the user:

New Version Available

when the user tries to open the application, and a new update is available in the play store.

Answer 1

I think that the easiest way is to have a web service on its own server that returns the current version number, unfortunately, you will need to update this version number every time you update the application in the store.

Answer 2

Create a text file with the latest version number in your GitHub Gist account.

Get Source URL

string url = " https://gist.githubusercontent.com/YOUR_ACCOUNT_NAME/0df1fa45aa11753de0a85893448b22de/raw/UpdateInfo.txt ";

private static async Task<string> GetLatestVersion(string URL) { HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(new Uri(URL)); request.ContentType = "application/json"; //i am using a json file request.Method = "GET"; request.Timeout = 20000; // Send the request to the server and wait for the response: try { using (WebResponse response = await request.GetResponseAsync()) { // Get a stream representation of the HTTP web response: using (Stream stream = response.GetResponseStream()) { StreamReader reader = new StreamReader(stream); return reader.ReadToEnd(); } } } catch (Exception ex) { return string.Empty; } } 

which will return the latest version of your application. and check with the existing version of the application in action

 var versionName = Application.Context.ApplicationContext.PackageManager.GetPackageInfo(Application.Context.ApplicationContext.PackageName, 0).VersionName; var currentVer = double.Parse(versionName); 

but you must update this version number every time you update the application in the play store.

Answer 3

 private class GetVersionCode extends AsyncTask<Void, String, String> { @Override protected String doInBackground(Void... voids) { String newVersion = null; try { newVersion = Jsoup.connect("https://play.google.com/store/apps/details?id=" + SplashActivity.this.getPackageName() + "&hl=it") .timeout(30000) .userAgent("Mozilla/5.0 (Windows; U; WindowsNT 5.1; en-US; rv1.8.1.6) Gecko/20070725 Firefox/2.0.0.6") .referrer("http://www.google.com") .get() .select("div[itemprop=softwareVersion]") .first() .ownText(); return newVersion; } catch (Exception e) { return newVersion; } } @Override protected void onPostExecute(String onlineVersion) { super.onPostExecute(onlineVersion); String currentVersion = null; try { currentVersion = getPackageManager().getPackageInfo(getPackageName(), 0).versionName; } catch (PackageManager.NameNotFoundException e) { e.printStackTrace(); } if (onlineVersion != null && !onlineVersion.isEmpty()) { if (Float.valueOf(currentVersion) < Float.valueOf(onlineVersion)) { final AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(SplashActivity.this); alertDialogBuilder.setTitle("Product Update"); alertDialogBuilder.setMessage("A new version is available. Would you like to Upgrade now? (Current: "+currentVersion+" Latest: "+onlineVersion+")"); alertDialogBuilder.setPositiveButton("ok", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface arg0, int arg1) { startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("market://details?id="+SplashActivity.this.getPackageName()))); } }); alertDialogBuilder.setNegativeButton("Cancel",new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { alertDialogBuilder.setCancelable(true); finish(); loginUserCheck(); } }); AlertDialog alertDialog = alertDialogBuilder.create(); alertDialog.show(); }