Java tutorial
//package com.java2s; import android.content.Context; import android.content.pm.PackageManager; public class Main { public static String GetVersion(Context paramContext) { try { String str = paramContext.getPackageManager().getPackageInfo(paramContext.getPackageName(), 0).versionName; return str; } catch (PackageManager.NameNotFoundException localNameNotFoundException) { } return "Unknown"; } }