Android :: How To Get Version Of Installed Apps?

How can I get the version information of the current installed apps on my phone. if I do : Package Manager packageManager = getPackageManager(); List<PackageInfo> packs = package Manager. getInstalledPackages(0); int size = packs.size(); apps += " Total apps = "+ size+" "; for (int i = 0; i < size; i++) { PackageInfo p = packs.get(i); apps += "App name: " + p.applicationInfo.loadLabel(packageManager).toString(); apps += "Package name: " + p.packageName; apps += "Version name: " + p.versionName; apps += ""; } tv.setText ("Installed apps:"+apps); I get all the apps currently installed. I wasn't able to figure out how to extract their correspondent version information.