Question

I have build my very first application to Android and I want now to let the application to check my server for new updates when the user starts the application; if the version in the APK filename (for example weather-right-now-11.apk) is different with the actual version, prompt user to download the new update. How can I accomplish this?

Thanks in advance!

Answer 1

add this to your main activity :

@Override
    protected void onResume() {
        Toast.makeText(getApplicationContext(), "OnResume", Toast.LENGTH_SHORT).show();
        super.onResume();
    }

and add your action in this function. onResume run on every start of activity.

you must have a server that connect to it and check version of application and download it, you can check your version with this :

getApplicationContext().getPackageManager().getPackageInfo(
                context.getApplicationInfo().packageName, 0).versionCode;

you can use tcp or udp packet to connect to server and check your last version. This is a link that you can learn about tcp :

• http://systembash.com/content/a-simple-java-tcp-server-and-tcp-client/