Java tutorial
//package com.java2s; // Licensed under the Apache License, Version 2.0 import android.content.Context; import android.content.pm.PackageManager; public class Main { public static boolean doesPackageHaveSameSignature(Context context, String productPackage) { int compareSignatures = context.getPackageManager().checkSignatures(context.getPackageName(), productPackage); return PackageManager.SIGNATURE_MATCH == compareSignatures; } }