Detect if new install or updated version (Android app)

Question

I have an app on the Play Store. I want to put a requirement that if users want to use a certain part of the app, they have to invite a friend before being able to do so. Bu

Answer 1

If you want to perform any operation only once per update then follow below code snippet

private void performOperationIfInstallFromUpdate(){ 
try {
        SharedPreferences prefs = getActivity().getPreferences(Context.MODE_PRIVATE);
        String versionName = prefs.getString(versionName, "1.0");
        String currVersionName = getApplicationContext().getPackageManager().getPackageInfo(getPackageName(), 0).versionName;
        if(!versionName.equals(currVersionName)){
            //Perform Operation which want execute only once per update
            //Modify pref 
            SharedPreferences.Editor editor = prefs.edit();
            editor.putString(versionName, currVersionName);
            editor.commit();
        }
    } catch (PackageManager.NameNotFoundException e) {
        e.printStackTrace();
        return BASE_VERSION;
    }

}