From 0ca5d858327d71298cf86f20461b90a9cd38d780 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rapha=C3=ABl=20Bussa?= <raphaelbussa@gmail.com>
Date: Tue, 24 Jan 2017 22:10:31 +0100
Subject: [PATCH] Update README.md

---
 README.md | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/README.md b/README.md
index 45ee58f..3b51900 100644
--- a/README.md
+++ b/README.md
@@ -116,6 +116,28 @@ app:hv_add_icon="@drawable/ic_action_settings"
 headerView.setShowAddButton(true);
 app:hv_show_add_button="true"
 ```
+#### Callback
+```Java
+headerView.setCallback(new HeaderCallback() {
+
+    @Override
+    public boolean onSelect(int id, boolean isActive) {
+        //return profile id selected and if is the active profile
+        return true; //true for close the dialog, false for do nothing
+    }
+
+    @Override
+    public boolean onItem(int id) {
+        //return witch buttom item is selected
+        return true; //true for close the dialog, false for do nothing
+    }
+
+    @Override
+    public boolean onAdd() {
+        return true; //true for close the dialog, false for do nothing
+    }
+});
+```
 #### Loading image from network
 Just add this in your class Application (of course you can use your preferred libs for load images)
 ```Java