Java tutorial
//package com.java2s; import android.content.Context; import android.content.pm.PackageInfo; import android.content.pm.PackageManager; public class Main { public static int getAppVersionCode(Context context) { try { PackageManager pm = context.getPackageManager(); PackageInfo pi = pm.getPackageInfo(context.getPackageName(), 0); return pi == null ? -1 : pi.versionCode; } catch (PackageManager.NameNotFoundException e) { e.printStackTrace(); return -1; } } }