how to update version in apk maui application automatically?

Question

Hi, i'm using .net maui 8 for Android , and i publish my application in a remote server and when i update my application automatically by comparing version in update.json file. I can't update version in my app. how to do that?

Answer 1

Hello,

Thanks for your feeback.

On the Android platform, you can upgrade the application within the app by following the steps below.

Step 1. Create a native installation method in the Platforms/Android folder to implement the function of installing the apk.

using Settings = Android.Provider.Settings;

using Uri = Android.Net.Uri;

 

namespace MauiApp3.Platforms.Droid

{

    public static class apkInstallHelper

    {

        private const int RequestCode = 200;

        public static void InstallAPK(string filepath)

        {

            if (Build.VERSION.SdkInt >= BuildVersionCodes.R && !Platform.CurrentActivity.PackageManager.CanRequestPackageInstalls())

            {

                Intent intent = new Intent(Settings.ActionManageUnknownAppSources);

                intent.SetData(Uri.Parse("package:" + Platform.CurrentActivity.PackageName));

                Platform.CurrentActivity.StartActivityForResult(intent, RequestCode);

            }

                installApk(filepath);

        }

        private static void installApk(string filepath)

        {

            Java.IO.File file = new Java.IO.File(filepath);

            Intent intent = new Intent(Intent.ActionView);

            // Starting from Android 8, Google has regulated that Android updates must go through FileProvide and require user consent.

            Uri apkUri = FileProvider.GetUriForFile(Platform.CurrentActivity, "com.xx.xxx.fileprovider", file);

            intent.SetDataAndType( apkUri, "application/vnd.android.package-archive");

            intent.SetFlags(ActivityFlags.NewTask | ActivityFlags.GrantReadUriPermission);

            Platform.CurrentActivity.StartActivity(intent);

        }

    }

}

Step 2. Since the first step uses FileProvider, you need to add relevant configuration and permission declarations in AndroidManifest.xml.

<application android:allowBackup="true" android:icon="@mipmap/appicon" android:roundIcon="@mipmap/appicon_round" android:supportsRtl="true">

<provider

        android:name="androidx.core.content.FileProvider"

        android:authorities="com.xx.xxx.fileprovider"

        android:exported="false"

        android:grantUriPermissions="true">

<meta-data

            android:name="android.support.FILE_PROVIDER_PATHS"

            android:resource="@xml/file_path"

            />

</provider>

</application>

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

<uses-permission android:name="android.permission.INTERNET" />

<uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />

Step 3. Create an xml folder in the Android/Resources folder and create a file_path.xml file in the xml folder, and then change the Build Action of this file to AndroidResource.

<?xml version="1.0" encoding="utf-8"?>

<paths xmlns:android="http://schemas.android.com/apk/res/android">

<files-path path="" name="apk" />

</paths>

The files-path set here corresponds to the AppDataDirectory path provided by FileSystem. In this example, the corresponding file address is var filepath = Path.Combine(FileSystem.AppDataDirectory, "test.apk");. If you download the APK file to another folder, you need to change the path in the xml so that FileProvider can find your APK file.

Step 4. Invoke the install method on maui.

#if ANDROID

            var filepath = Path.Combine(FileSystem.AppDataDirectory, "test.apk");

            MauiApp3.Platforms.Droid.apkInstallHelper.InstallAPK(filepath);

#endif

After executing this method, you will first get the enable permission page. After the permission is granted, a pop-up window will appear requesting to install the app.

Best Regards,

Alec Liu.

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