In-app Updates

In-app updates enable applications to deliver and install updates directly within the app, enhancing user experience by minimizing disruption.

What are In-app Updates for Streamlined Update Experience

In-app updates offer a seamless method for delivering and installing new versions of an application directly within the app. This eliminates the need for users to manually check for updates, ensuring they receive the latest features and fixes efficiently. This streamlined approach enhances the overall user experience and keeps the app up-to-date.

Benefits and Examples of In-app Updates

In-app updates offer several benefits, including a smoother user experience by enabling seamless updates without requiring users to manually download or install new versions. For example, critical bug fixes and feature enhancements can be automatically applied while the app is running, ensuring users always have access to the latest improvements and functionalities.

Implementing In-App Updates

Authentication Methods for Obtaining Appcircle Personal API Token

There are two primary methods to implement authentication and retrieve the Appcircle Personal API token for in-app updates:

1. Using a Custom Backend Endpoint
2. Using Appcircle Services

1. Using a Custom Backend Endpoint

This method involves creating a secure backend service that handles the authentication process and retrieves the Appcircle Personal API token on behalf of your app. Here's how it works:

1. Your app sends a request to your custom backend endpoint Enterprise App Store profile id with authentication credentials such as email and password.
2. The backend authenticates with Appcircle using profile-specific app secret and obtains the Personal API token.
3. The backend returns the token to your app.

Benefits of this approach:

• Enhanced security as sensitive credentials are not stored in the app
• Centralized management of authentication
• Ability to implement additional security measures on the backend

Sample Backend Project:

GitHub - appcircleio/in-app-update-backend-sample: Seamless in-app update experience using Appcircle Enterprise App Store

Seamless in-app update experience using Appcircle Enterprise App Store - appcircleio/in-app-update-backend-sample

github.com

2. Using Appcircle Services

This method involves directly using Appcircle's authentication services from within your app. Here's how it works:

1. Your app securely stores the profile-specific secret and profile id.
2. The app sends the secret along with the profile ID to Appcircle authentication services.
3. Appcircle validates the credentials and returns the necessary authentication token.
4. Upon successful authentication, the app receives the Personal API token.

Benefits of this approach:

• Simpler implementation with fewer components
• Reduced backend maintenance
• Direct integration with Appcircle services

Both methods have their merits, and the choice depends on your specific security requirements, infrastructure, and development preferences. The custom backend approach offers more control and security, while the direct Appcircle services method provides a more straightforward implementation.

Prerequisites for Integration

Authentication Requirements

To integrate an in-app update experience, you will need the profile secret, the enterprise store prefix, the enterprise store url, and the enterprise store profile id.

How to Obtain Integrations Parameters

In-app Update Secret

Steps to Generate a Profile-Specific Secret:

1- Navigate to your enterprise app store profile.

2- In the top-right corner, click on the Settings icon.

3- Select Generate Secret to create a profile-specific secret.

Enterprise Store Prefix

Navigate to the Enterprise Store module and settings page to find the STORE PREFIX information. You can also modify it if needed.

Enterprise Store URL

Navigate to the Enterprise Store module and settings page to find the STORE URL information.

Enterprise Store Profile Id

You can obtain your Enterprise Store Profile ID from the URL or by using the @appcircle/cli.

How to Extract Your Enterprise Store Profile ID from the URL

1. Navigate to your Enterprise Store Profile.
2. Check the URL, which should be in this format: /enterprise-store/profiles/PROFILE_ID. The PROFILE_ID refers to your specific profile ID.

Retrieving Profile ID Using @appcircle/cli

The upcoming command retrieves the complete list of Enterprise Store Profiles.

appcircle enterprise-app-store profile list

Authentication for Updates

Retrieving Access Token Using Personal API Token

To fetch app versions and download the binary, you first need to obtain an access token using a Personal API Token (PAT).

Swift

package com.example.appcircle_sample_android;

import okhttp3.*;
import com.google.gson.Gson;
import java.io.IOException;
import java.util.concurrent.TimeUnit;
import com.google.gson.annotations.SerializedName;

import org.json.JSONException;
import org.json.JSONObject;

class AuthModel {
    @SerializedName("access_token")
    private String accessToken;

    public String getAccessToken() {
        return accessToken;
    }
    public void setAccessToken(String accessToken) {
        this.accessToken = accessToken;
    }
}

public class AuthService {
    private static final OkHttpClient client = new OkHttpClient.Builder()
            .connectTimeout(10, TimeUnit.SECONDS)
            .readTimeout(30, TimeUnit.SECONDS)
            .build();

    public static AuthModel getAccessToken() throws IOException {
        HttpUrl url = new HttpUrl.Builder()
                .scheme("https")
                .host(Environment.STORE_URL)
                .addPathSegment("api")
                .addPathSegment("auth")
                .addPathSegment("token")
                .build();

        JSONObject jsonBody = new JSONObject();
        try {
            jsonBody.put("ProfileId", Environment.PROFILE_ID);
            jsonBody.put("Secret", Environment.SECRET);
        } catch (JSONException e) {
            throw new IOException("Error creating JSON body", e);
        }

        RequestBody body = RequestBody.create(
                MediaType.parse("application/json; charset=utf-8"),
                jsonBody.toString()
        );

        Request request = new Request.Builder()
                .url(url)
                .post(body)
                .addHeader("Content-Type", "application/json")
                .addHeader("Accept", "application/json")
                .build();

        try (Response response = client.newCall(request).execute()) {
            if (!response.isSuccessful()) throw new IOException("Unexpected code " + response);

            String responseBody = response.body().string();
            System.out.println("Response: " + responseBody);

            Gson gson = new Gson();
            return gson.fromJson(responseBody, AuthModel.class);
        }
    }
}

Android

extension API {
    func getAccessToken(secret: String, profileId: String) async throws -> AuthModel {
        var components = URLComponents()
        components.scheme = apiConfig.scheme
        components.host = apiConfig.host
        components.path = "/api/auth/token"
        
        guard let url = components.url else {
            throw HTTPError.invalidUrl
        }
        
        var request = URLRequest(url: url)
        request.httpMethod = HTTPMethod.POST.rawValue
        request.setValue("application/json", forHTTPHeaderField: "Content-Type")
        request.setValue("application/json", forHTTPHeaderField: "Accept")
        
        let parameters: [String: Any] = [
            "ProfileId": profileId,
            "Secret": secret
        ]
        
        request.httpBody = try? JSONSerialization.data(withJSONObject: parameters)
        
        return try await apiFetcher.request(request: request)
    }
}

React Native

import axios from 'axios';
import Environment from '../Environment';

export const getACToken = async (profileId: string) => {
  const endpointURL = `${Environment.STORE_URL}/api/auth/token`;

  const response = await axios.post(
    endpointURL,
    {
      ProfileId: profileId,
      Secret:
        Platform.OS === 'ios'
          ? Environment.IOS_STORE_SECRET
          : Environment.ANDROID_STORE_SECRET,
    },
    {
      headers: {
        'Content-Type': 'application/json',
        accept: 'application/json',
      },
    },
  );

  return response.data;
};

MAUI

using System.Net.Http;
using System.Text;
using System.Text.Json;
using System.Threading.Tasks;
using static MAUI_IN_APP.Models.InAppUpdateModel;

namespace MAUI_IN_APP.Helpers;

public static class InAppUpdateHelper {

    private static async Task<string> GetACToken(string profileId)
	  {
	  	var httpClient = new HttpClient();
	  	var endpointUrl = $"{Environment.GetEnvironmentVariable("STORE_URL")}/api/auth/token";
	  	var secret = DeviceInfo.Platform == DevicePlatform.iOS
	  		? Environment.GetEnvironmentVariable("IOS_STORE_SECRET") 
	  		: Environment.GetEnvironmentVariable("ANDROID_STORE_SECRET");
  
	  	var requestBody = new
	  	{
	  		ProfileId = profileId,
	  		Secret = secret
	  	};
  
	  	var json = JsonSerializer.Serialize(requestBody);
	  	var content = new StringContent(json, Encoding.UTF8, "application/json");

	  	var response = await httpClient.PostAsync(endpointUrl, content);
	  	var responseData = await response.Content.ReadAsStringAsync();
	  	var responseObject = JsonSerializer.Deserialize<TokenResponse>(responseData);
		
	  	  return responseObject.access_token;
	  }

}

Initiating Updates

Retrieving Available App Versions from Your Enterprise Store

Fetch all available versions and compare them with the current version to determine if an update is required.

Swift

package com.example.appcircle_sample_android;

import okhttp3.Request;
import okhttp3.OkHttpClient;
import okhttp3.Response;
import okhttp3.HttpUrl;
import com.google.gson.Gson;
import com.google.gson.JsonArray;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;
import com.google.gson.reflect.TypeToken;
import java.io.IOException;
import java.lang.reflect.Type;
import java.util.List;

class AppVersion {
    private String id;
    private String version;
    private Integer publishType;

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getVersion() {
        return version;
    }

    public void setVersion(String version) {
        this.version = version;
    }

    public Integer getPublishType() {
        return publishType;
    }

    public void setPublishType(Integer publishType) {
        this.publishType = publishType;
    }
}

public class AppService {
    private static final String BASE_URL = "https://api.appcircle.io";
    private final OkHttpClient client = new OkHttpClient();
    private final Gson gson = new Gson();

    public List<AppVersion> getAppVersions(String accessToken, String profileId) throws IOException {
        HttpUrl url = HttpUrl.parse("https://" + Environment.STORE_URL + "/api/app-versions");

        if (url == null) {
            throw new IOException("Invalid URL");
        }

        Request request = new Request.Builder()
                .url(url)
                .get()
                .addHeader("Accept", "*/*")
                .addHeader("Authorization", "Bearer " + accessToken)
                .build();

        try (Response response = client.newCall(request).execute()) {
            if (!response.isSuccessful()) {
                throw new IOException("Unexpected code " + response);
            }

            String responseBody = response.body().string();
            System.out.println("Response: " + responseBody); // For debugging

            JsonObject jsonObject = JsonParser.parseString(responseBody).getAsJsonObject();
            JsonArray dataArray = jsonObject.getAsJsonArray("data");

            Type listType = new TypeToken<List<AppVersion>>() {}.getType();
            return gson.fromJson(dataArray, listType);
        }
    }
}

Android

extension API {
    func getAppVersions(accessToken: String) async throws -> [AppVersion] {
        var components = URLComponents()
        components.scheme = apiConfig.scheme
        components.host = apiConfig.host
        components.path = "/api/app-versions"
        guard let url = components.url else {
            throw HTTPError.invalidUrl
        }
        var request = URLRequest(url: url)
        request.httpMethod = HTTPMethod.GET.rawValue
        request.setValue("*/*", forHTTPHeaderField: "Accept")
        request.setValue("Bearer \(accessToken)", forHTTPHeaderField: "Authorization")

        return try await apiFetcher.request(request: request)
    }
}

React Native

export const getAppVersions = async (accessToken: string) => {
  const url = `${Environment.STORE_URL}/api/app-versions`;

  try {
    const response = await axios.get(url, {
      headers: {
        Accept: '*/*',
        Authorization: `Bearer ${accessToken}`,
      },
    });

    return response.data.data;
  } catch (error) {
    console.error('Failed to get app versions:', error);
  }
};

MAUI

using System.Net.Http;
using System.Text;
using System.Text.Json;
using System.Threading.Tasks;
using static MAUI_IN_APP.Models.InAppUpdateModel;

namespace MAUI_IN_APP.Helpers;

public static class InAppUpdateHelper {

	  private static async Task<List<AppVersion>> GetAppVersions(string accessToken)
	  {
	      var url = $"{Environment.GetEnvironmentVariable("STORE_URL") }/api/app-versions";
	      var options = new JsonSerializerOptions
	      {
	      	PropertyNameCaseInsensitive = true,
	      	DefaultIgnoreCondition = System.Text.Json.Serialization.JsonIgnoreCondition.WhenWritingNull
	      };
	      using (var httpClient = new HttpClient())
	      {
	      	httpClient.DefaultRequestHeaders.Accept.Add(new System.Net.Http.Headers.MediaTypeWithQualityHeaderValue("*/*"));
	      	httpClient.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", accessToken);

	      	var response = await httpClient.GetAsync(url);
	      	var jsonResponse = await response.Content.ReadAsStringAsync();
	      	var responseData = JsonSerializer.Deserialize<AppVersionsResponse>(jsonResponse,options);
	      	return responseData.data;
	      }
	  }
}

Compare Current Version with Fetched App Versions to Identify Updates

Compare the current version with the fetched versions to identify the latest release. Configuration options can be adjusted to determine which version is considered the latest.

Swift

import androidx.annotation.Nullable;
import java.util.List;
import java.util.ArrayList;

/*
    You can implement your custom update check mechanism within this function.
    Currently, we convert the version to an integer and compare it with the 'CFBundleShortVersionString'.
    You may want to check other datas about the app version to write the update control mechanism please check
    /v2/profiles/{profileId}/app-versions at https://api.appcircle.io/openapi/index.html?urls.primaryName=store
*/
public class VersionUtils {
    private List<Integer> versionComponents(String version) {
        List<Integer> components = new ArrayList<>();
        String[] parts = version.split("\\.");
        for (String part : parts) {
            try {
                components.add(Integer.parseInt(part));
            } catch (NumberFormatException e) {
                e.printStackTrace();
            }
        }
        return components;
    }

    public @Nullable AppVersion getLatestVersion(String currentVersion, List<AppVersion> appVersions) {
        AppVersion latestAppVersion = null;
        List<Integer> currentComponents = versionComponents(currentVersion);

        for (AppVersion app : appVersions) {
            List<Integer> latestComponents = versionComponents(app.getVersion());
            boolean isNewerVersion = false;

            for (int i = 0; i < Math.min(currentComponents.size(), latestComponents.size()); i++) {
                int current = currentComponents.get(i);
                int latest = latestComponents.get(i);
                if (latest > current && app.getPublishType() != 0) {
                    isNewerVersion = true;
                    break;
                } else if (latest < current) {
                    break;
                }
            }

            if (isNewerVersion) {
                latestAppVersion = app;
            }
        }

        return latestAppVersion;
    }
}

Android

/*
    You can implement your custom update check mechanism within this function.
    Currently, we convert the version to an integer and compare it with the 'CFBundleShortVersionString'.
    You may want to check other datas about the app version to write the update control mechanism please check
    /v2/profiles/{profileId}/app-versions at https://api.appcircle.io/openapi/index.html?urls.primaryName=store
*/
private func getLatestVersion(currentVersion: String, appVersions: [AppVersion]) -> AppVersion? {
    var latestAppVersion: AppVersion?
    let currentComponents = versionComponents(from: currentVersion)
    
    // Helper function to convert version string into an array of integers
    func versionComponents(from version: String) -> [Int] {
        return version.split(separator: ".").compactMap { Int($0) }
    }
    
    
    appVersions.forEach { app in
        // Convert versions to arrays of integers
        let latestComponents = versionComponents(from: app.version)
        
        // Compare versions component by component
        for (current, latest) in zip(currentComponents, latestComponents) {
            // You can control to update None, Beta or Live publish types you have selected on Appcircle Enterprise Store
            if (latest > current && app.publishType != 0) {
                latestAppVersion = app
            }
            
        }
    }
    
    return latestAppVersion
}

React Native

import {Platform} from 'react-native';

interface AppVersion {
  id: string;
  version: string;
  publishType: number;
}

/*
    You can implement your custom update check mechanism within this function.
    Currently, we convert the version to an integer and compare it with the 'CFBundleShortVersionString'.
    You may want to check other datas about the app version to write the update control mechanism please check
    /v2/profiles/{profileId}/app-versions at https://api.appcircle.io/openapi/index.html?urls.primaryName=store
*/
const getLatestVersion = (
  currentVersion: string,
  appVersions: AppVersion[],
): AppVersion | undefined => {
  let latestAppVersion: AppVersion | undefined;
  // Helper function to convert version string into an array of integers
  const versionComponents = (version: string): number[] => {
    return version
      .split('.')
      .map(Number)
      .filter(num => !isNaN(num));
  };

  const currentComponents = versionComponents(currentVersion);

  appVersions.forEach(app => {
    // Convert versions to arrays of integers
    const latestComponents = versionComponents(app.version);

    // Compare versions component by component
    for (
      let i = 0;
      i < Math.min(currentComponents.length, latestComponents.length);
      i++
    ) {
      const current = currentComponents[i];
      const latest = latestComponents[i];

      // You can control to update None, Beta or Live publish types you have selected on Appcircle Enterprise Store
      if (latest > current && app.publishType !== 0) {
        latestAppVersion = app;
      }
    }
  });

  return latestAppVersion;
};

MAUI

using System.Net.Http;
using System.Text;
using System.Text.Json;
using System.Threading.Tasks;
using static MAUI_IN_APP.Models.InAppUpdateModel;

namespace MAUI_IN_APP.Helpers;

public static class InAppUpdateHelper {

	  /*
      You can implement your custom update check mechanism within this function.
      Currently, we convert the version to an integer and compare it with the 'CFBundleShortVersionString'.
      You may want to check other datas about the app version to write the update control mechanism please check
      /v2/profiles/{profileId}/app-versions at https://api.appcircle.io/openapi/index.html?urls.primaryName=store
	  */
	  public static AppVersion GetLatestVersion(string currentVersion, List<AppVersion> appVersions)
	  {
	  	AppVersion latestAppVersion = null;
  
	  	// Helper function to convert version string into an array of integers
	  	int[] VersionComponents(string version)
	  	{
	  		return version
	  			.Split('.')
	  			.Select(part => int.TryParse(part, out int num) ? num : (int?)null)
	  			.Where(num => num.HasValue)
	  			.Select(num => num.Value)
	  			.ToArray();
	  	}
	  	var currentComponents = VersionComponents(currentVersion);
  
	  	foreach (var app in appVersions)
	  	{
	  		// Convert versions to arrays of integers
	  		var latestComponents = VersionComponents(app.Version);

	  		// Compare versions component by component
	  		for (int i = 0; i < Math.Min(currentComponents.Length, latestComponents.Length); i++)
	  		{
	  			var current = currentComponents[i];
	  			var latest = latestComponents[i];

	  			// You can control to update None, Beta or Live publish types you have selected on Appcircle Enterprise Store
	  			if (latest > current && app.PublishType == (int)PublishType.Live)
	  			{
	  				latestAppVersion = app;
	  				break; // Assuming once we find a valid version, we don't need to check further.
	  			}
	  		}
	  	}
  
	  	return latestAppVersion;
	  }
}

Updating the App

If a newer version is available, generate the platform-specific download URL and return it for background opening later.

Swift

public String getAppVersionName() {
    try {
        PackageInfo pInfo = this.getPackageManager().getPackageInfo(getPackageName(), 0);
        return  pInfo.versionName;
    } catch (PackageManager.NameNotFoundException e) {
        e.printStackTrace();
    }
    return "NOT_FOUND";
}

private class GetAccessTokenTask extends AsyncTask<String, Void, AuthModel> {
    @Override
    protected AuthModel doInBackground(String... params) {
        try {
            AuthModel response = AuthService.getAccessToken();
            fetchAppVersions(response.getAccessToken(), Environment.PROFILE_ID);

            return response;
        } catch (IOException e) {
            e.printStackTrace();
            return null;
        }
    }
}

private void fetchAppVersions(final String accessToken, final String profileId) {
    new Thread(new Runnable() {
        @Override
        public void run() {
            try {
                final List<AppVersion> appVersions = appService.getAppVersions(accessToken, profileId);
                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        String versionName = getAppVersionName();

                        if (versionName != null) {
                            VersionUtils versionUtils = new VersionUtils();

                            @Nullable  AppVersion latestVersion = versionUtils.getLatestVersion(versionName, appVersions);
                            if (latestVersion != null) {
                                showUpdateDialog(Environment.STORE_PREFIX, profileId, latestVersion, accessToken, "USER_EMAIL");
                            }
                        } else {
                            Log.d("MainActivity", "Current Version Not Found");
                        }
                    }
                });
            } catch (final IOException e) {
                e.printStackTrace();
                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        Log.e("APIError", "Error fetching app versions", e);
                    }
                });
            }
        }
    }).start();
}

Android

func checkForUpdate(secret: String, profileId: String, storeURL: String, userEmail: String) async throws -> URL? {
    do {
        let authResponse = try await self.authApi.getAccessToken(secret: secret, profileId: profileId)
        let appVersions = try await self.api.getAppVersions(accessToken: authResponse.accessToken)
        let bundle = Bundle.main
        let currentVersion = bundle.infoDictionary?["CFBundleShortVersionString"] as? String
        guard let currentVersion = currentVersion else {
            print("'CFBundleShortVersionString' Version Could Not found")
            return nil
        }
        
        guard let availableVersion = getLatestVersion(currentVersion: currentVersion, appVersions: appVersions) else {
            print("App is up to date!")
            return nil
        }
        
        guard let downloadURL  = URL(string: "itms-services://?action=download-manifest&url=https://\(storeURL)/api/app-versions/\(availableVersion.id)/download-version/\(authResponse.accessToken)/user/\(userEmail)") else {
            print("Latest Version URL could not created")
            return nil
        }
        
        return downloadURL
    } catch {
        print(error)
        return nil
    }
}

React Native

export const checkForUpdate = async (params: {
  iOSProfileId: string;
  androidProfileId: string;
  currentVersion: string;
  userEmail: string;
}): Promise<{updateURL: string; version: string} | undefined> => {
  try {
    const {access_token} = await getACToken(
      Platform.OS === 'ios' ? params.iOSProfileId : params.androidProfileId,
    );

    const appVersions = await getAppVersions(access_token);

    const latestVersion = getLatestVersion(params.currentVersion, appVersions);
    if (latestVersion) {
      const downloadUrl = createDownloadUrl(
        latestVersion.id,
        access_token,
        params.userEmail,
      );

      if (!downloadUrl) {
        console.error('Failed to create download URL');
        return undefined;
      }

      return {
        updateURL: downloadUrl,
        version: latestVersion.version,
      };
    }
  } catch (error) {
    console.log(error.response);
    console.error('Failed to determine if an update is available', error);
  }
};

const createDownloadUrl = (
  availableVersionId: string,
  accessToken: string,
  email: string,
): string | null => {
  const baseUrl = `${Environments.STORE_URL}/api/app-versions/${availableVersionId}/download-version/${accessToken}/user/${email}`;
  const downloadUrl = `itms-services://?action=download-manifest&url=${baseUrl}`;

  try {
    return Platform.OS === 'ios' ? downloadUrl : baseUrl;
  } catch {
    console.error('Latest Version URL could not be created');
    return null;
  }
};

MAUI

using System.Net.Http;
using System.Text;
using System.Text.Json;
using System.Threading.Tasks;
using static MAUI_IN_APP.Models.InAppUpdateModel;

namespace MAUI_IN_APP.Helpers;

public static class InAppUpdateHelper {

	  public static async Task<UpdateResult> CheckForUpdate(string currentVersion, string userEmail)
	  {
	  	var profileId = DeviceInfo.Platform == DevicePlatform.iOS ?
	  		Environment.GetEnvironmentVariable("IOS_PROFILE_ID") : 
	  		Environment.GetEnvironmentVariable("ANDROID_PROFILE_ID");
	  	if (profileId != null)
	  	{
	  		var accessToken = await GetACToken(profileId);
	  		var appVersions = await GetAppVersions(accessToken);
	  		var latestVersion = GetLatestVersion(currentVersion, appVersions);
	  		if (latestVersion != null)
	  		{
	  			var downloadUrl = CreateDownloadUrl(latestVersion.Id,accessToken,userEmail);
	  			if (downloadUrl == null)
	  			{
	  				return null;
	  			}

	  			return new UpdateResult
	  			{
	  				DownloadUrl = downloadUrl,
	  				Version = latestVersion.Version
	  			};
	  		}
	  	}

	  	return null;
	  }

    public static string CreateDownloadUrl(string availableVersionId, string accessToken, string email)
	  {
	  	var baseUrl = $"{Environment.GetEnvironmentVariable("STORE_URL")}/api/app-versions/{availableVersionId}/download-version/{accessToken}/user/{email}";
	  	var downloadUrl = $"itms-services://?action=download-manifest&url={Uri.EscapeDataString(baseUrl)}";
	  	try
	  	{
	  		// Assuming you have a way to determine the platform
	  		var isIos = DeviceInfo.Platform == DevicePlatform.iOS;
	  		return isIos ? downloadUrl : baseUrl;
	  	}
	  	catch (Exception)
	  	{
	  		Console.WriteLine("Latest Version URL could not be created");
	  		return null;
	  	}
	  }

}

How to Prompt an Alert and Install the Latest Release

After obtaining the download URL for a newer version, display an alert with options to update or cancel. Customize the alert based on your requirements, such as omitting the cancel button for mandatory updates.

Swift

private AppService appService = new AppService();

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    new GetAccessTokenTask().execute(Environment.PAT);
}

private void showUpdateDialog(final String storeURL, final String profileId, final AppVersion appVersion, final String accessToken, final String userEmail) {
    new AlertDialog.Builder(this)
            .setTitle("Update Available")
            .setMessage(appVersion.getVersion() + " version is available. Do you want to update?")
            .setPositiveButton("Update", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    String baseDownloadURL = "https://%s/api/app-versions/%s/download-version/%s/user/%s";
                    Uri downloadURL =  Uri.parse(String.format(baseDownloadURL, storeURL, appVersion.getId(), accessToken, userEmail));
                    Intent intent = new Intent(Intent.ACTION_VIEW, downloadURL);
                    startActivity(intent);
                }
            })
            .setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    // Code to run when "Cancel" is pressed
                    dialog.dismiss();
                }
            })
            .show();
}

Android

import SwiftUI

@main
struct AppcircleApp: App {
    @State private var updateURL: URL?
    @State private var showAlert: Bool = false


    var body: some Scene {
        WindowGroup {
            ContentView()
                .onAppear {
                    let updateChecker = UpdateChecker()
                    Task {
                        if let updateURL = try await updateChecker.checkForUpdate(secret: Environments.secret, profileId: Environments.profileId, storeURL: Environments.storeURL, userEmail: "USER_EMAIL") {
                            self.updateURL = updateURL
                            self.showAlert.toggle()
                        }
                    }
                }
                .alert(isPresented: $showAlert) {
                    Alert(
                        title: Text("Update Available"),
                        message: Text("A new version is available Would you like to update?"),
                        primaryButton: .default(Text("Update"), action: {
                            UIApplication.shared.open(self.updateURL!) { isOpened in
                                print("Application Opened")
                            }
                        }),
                        secondaryButton: .cancel(Text("Cancel"), action: {
                            // Handle the cancel action
                            print("User canceled the update")
                        })
                    )
                }
        }
    }
}

React Native

import DeviceInfo from 'react-native-device-info';

useEffect(() => {
  const updateControl = async (currentVersion: string) => {
    const updateInfo = await checkForUpdate({
      iOSProfileId: Environment.IOS_PROFILE_ID,
      androidProfileId: Environment.ANDROID_PROFILE_ID,
      currentVersion,
      userEmail: 'USER_EMAIL',
    });
    if (updateInfo && updateInfo.updateURL && updateInfo.version) {
      Alert.alert(
        'Update Available',
        `${updateInfo.version} version is available.`,
        [
          {
            text: 'Update',
            onPress: () => {
              console.log('updateInfo.updateURL', updateInfo.updateURL);
              Linking.openURL(updateInfo.updateURL);
            },
          },
          {
            text: 'Cancel',
          },
        ],
      );
    }
  };

  const getCurrentAppVersion = async () => {
    try {
      const currentVersion = await DeviceInfo.getVersion();
      const buildNumber = await DeviceInfo.getBuildNumber();
      updateControl(currentVersion);
    } catch (error) {
      console.error('Failed to get app version:', error);
    }
  };

  getCurrentAppVersion();
}, []);

MAUI

using MAUI_IN_APP.Helpers;

namespace MAUI_IN_APP;

public partial class MainPage : ContentPage
{
      public MainPage()
      {
      	InitializeComponent();
      } 
      protected override async void OnAppearing()
      {
      	base.OnAppearing(); 
      	await UpdateControl();
      } 
      public async Task UpdateControl()
      {
      	var currentVersion = AppInfo.VersionString;
      	var updateInfo = await InAppUpdateHelper.CheckForUpdate(currentVersion, "USER_EMAIL");

      	if (updateInfo?.DownloadUrl != null && await Launcher.CanOpenAsync(updateInfo.DownloadUrl))
      	{
      		bool result = await DisplayAlert("Update Available",$"{updateInfo.Version} version is available.", "Update","Cancel");
      		if (result)
      		{
      			await Launcher.OpenAsync(updateInfo.DownloadUrl);
      		}
      	}
      }
}

caution

With API Level 29 and above, the in-app update experience must be managed by allowing users to download and manually install the update due to increased security restrictions.