jclass alertDialog_builder_class = env->FindClass("android/app/AlertDialog/Builder");

     jmethodID alertDialog_builder_ctor_method = env->GetMethodID("<init>", "(Landroid/content/Context;)v");
     jmethodID alertDialog_builder_setTitle_method = env->GetMethodID("setTitle", "(Ljava/lang/CharSequence;)Landroid/app/AlertDialog/Builder;");
     jmethodID alertDialog_builder_setMessage_method = env->GetMethodID("setMessage", "(Ljava/lang/CharSequence;)Landroid/app/AlertDialog/Builder;");
     jmethodID alertDialog_builder_setPositiveButton_method =
               env->GetMethodID("setPositiveButton",
                                "(Ljava/lang/CharSequence;Landroid/content/DialogInterface/OnClickListener;)"
                                "Landroid/app/AlertDialog/Builder");

     jmethodID alertDialog_builder_show_method = env->GetMethodID("show", "()Landroid/app/AlertDialog;");

     // AlertDialog.Builder builder = new AlertDialog.Builder(appContext);
     jobject builder = env->NewObject(alertDialog_builder_class, alertDialog_builder_ctor_method, pInstance->appContext);

     // String title = new String("Warning");
     // builder.setTitle(title);
     jstring title = env->NewStringUTF("Warning:");
     env->CallObjectMethod(alertDialog_buider_class, alertDialog_builder_setTitle_method, title);

     // builder.setMessage("This is an illegal copy.");
     env->CallObjectMethod(alertDialog_builder_class, alertDialog_builder_setMessage_method,
                           env->NewStringUTF("This is an illegal copy.");

     // builder.setPositionButton("OK", null);
     env->CallObjectMethod(alertDialog_builder_class, alertDialog_builder_setPositiveButton_method,
                          env->NewStringUTF("OK"), 0);

     // builder.show()
     env->CallObjectMethod(alertDialog_builder_class, alertDialog_builder_show_method);