Java tutorial
//package com.java2s; import android.content.Context; import android.content.pm.PackageInfo; import android.content.pm.PackageManager; public class Main { public static String getVersion(Context context) { try { PackageManager manager = context.getPackageManager(); PackageInfo info = manager.getPackageInfo(context.getPackageName(), 0); return info.versionName; } catch (Exception e) { e.printStackTrace(); return ""; } } }