Get version code from manifest

activity.java

public int getVersion() {
        int v = 0;
        try {
                Log.d("mj.store", "package name is: "+mContext.getPackageManager().getPackageInfo(mContext.getPackageName(), 0).packageName);
                Log.d("mj.store", "versionName name is: "+mContext.getPackageManager().getPackageInfo(mContext.getPackageName(), 0).versionCode);
                Log.d("mj.store", "versionCode name is: "+mContext.getPackageManager().getPackageInfo(mContext.getPackageName(), 0).versionName);
                v = mContext.getPackageManager().getPackageInfo(mContext.getPackageName(), 0).versionCode;
        } catch (PackageManager.NameNotFoundException e) {
                // Huh? Really?
        }
        return v;
}