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) { int result = -1; PackageManager pm = context.getPackageManager(); PackageInfo info = null; try { info = pm.getPackageInfo(context.getPackageName(), 0); result = info.versionCode; } catch (PackageManager.NameNotFoundException e) { e.printStackTrace(); } return result; } }