Java tutorial
//package com.java2s; //License from project: Open Source License import android.content.Context; import android.content.pm.PackageManager.NameNotFoundException; import android.util.Log; public class Main { public static int getVerCode(Context context) { int verCode = -1; try { verCode = context.getPackageManager().getPackageInfo("com.wangln", 0).versionCode; } catch (NameNotFoundException e) { Log.e("msg", e.getMessage()); } return verCode; } }