diff --git a/app/src/main/java/br/com/redcode/revealpassword/sample/MainActivity.kt b/app/src/main/java/br/com/redcode/revealpassword/sample/MainActivity.kt
index b5dad03..24dc0d8 100644
--- a/app/src/main/java/br/com/redcode/revealpassword/sample/MainActivity.kt
+++ b/app/src/main/java/br/com/redcode/revealpassword/sample/MainActivity.kt
@@ -2,6 +2,7 @@ package br.com.redcode.revealpassword.sample
 
 import android.os.Bundle
 import android.support.v7.app.AppCompatActivity
+import br.com.redcode.revealpassword.library.showOrHidePassword
 import kotlinx.android.synthetic.main.activity_main.*
 
 class MainActivity : AppCompatActivity() {
@@ -11,6 +12,9 @@ class MainActivity : AppCompatActivity() {
         setContentView(R.layout.activity_main)
 
         editTextWithImageForRevealPassword.changeIcon(android.R.drawable.ic_delete)
+
         editTextWithImageForRevealPassword.changeHint(getString(R.string.app_name))
+
+        buttonShowHidePassword.setOnClickListener { editTextSampleFunction.showOrHidePassword() }
     }
 }
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index dcc0829..7d6ad48 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -11,7 +11,7 @@
     <TextView
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:text="Default" />
+        android:text="Default UI component from library" />
 
     <br.com.redcode.revealpassword.library.EditTextWithImageForRevealPassword
         android:layout_width="match_parent"
@@ -22,7 +22,7 @@
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:layout_marginTop="20dp"
-        android:text="Custom from XML (only)" />
+        android:text="UI component customized in XML (no kotlin/java references)" />
 
     <br.com.redcode.revealpassword.library.EditTextWithImageForRevealPassword
         android:layout_width="match_parent"
@@ -34,7 +34,7 @@
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:layout_marginTop="20dp"
-        android:text="Sample on XML with Kotlin changing icon and label" />
+        android:text="Custom with Kotlin" />
 
     <br.com.redcode.revealpassword.library.EditTextWithImageForRevealPassword
         android:id="@+id/editTextWithImageForRevealPassword"
@@ -42,4 +42,24 @@
         android:layout_height="wrap_content"
         android:layout_marginTop="10dp" />
 
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp"
+        android:text="Just using the function from library" />
+
+    <EditText
+        android:id="@+id/editTextSampleFunction"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="10dp"
+        android:inputType="textWebPassword"
+        android:text="\@pedrofsn" />
+
+    <Button
+        android:id="@+id/buttonShowHidePassword"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Show/hide password" />
+
 </LinearLayout>
\ No newline at end of file