Update a device owner managed android app silently (in kiosk mode)

Question

I have created a device owner app. It can turn an app installed already into Kiosk Mode, I am trying to update the kiosk app remotely, not from playstore, but it's not getting updated. Could anyone please help me with some pointers?

Answer 1

You have to host your apk on your server and then download it based on any conditions that you specify. You can then use this code to update your app.

public static boolean InstallAPK(Context context, String apk_file_name) {
        try {

            File apkfile = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + File.separator + apk_file_name);
            if (apkfile.exists()) {

                FileInputStream in = new FileInputStream(apkfile);

                PackageInstaller packageInstaller = context.getPackageManager().getPackageInstaller();
                PackageInstaller.SessionParams params = new PackageInstaller.SessionParams(
                        PackageInstaller.SessionParams.MODE_FULL_INSTALL);
                params.setAppPackageName(context.getPackageName());
                // set params
                int sessionId = packageInstaller.createSession(params);
                PackageInstaller.Session session = packageInstaller.openSession(sessionId);
                OutputStream out = session.openWrite("COSU", 0, -1);
                byte[] buffer = new byte[65536];

                int c;
                while ((c = in.read(buffer)) != -1) {
                    out.write(buffer, 0, c);
                }
                session.fsync(out);
                in.close();
                out.close();
                session.commit(createIntentSender(context, sessionId));
                return true;
            } else
                return false;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }

private static IntentSender createIntentSender(Context context, int sessionId) {
        PendingIntent pendingIntent = PendingIntent.getBroadcast(
                context,
                sessionId,
                new Intent(ACTION_INSTALL_COMPLETE),
                0);
        return pendingIntent.getIntentSender();
    }