diff --git a/app/build.gradle b/app/build.gradle
index 0e530b9..4ec2701 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -3,14 +3,16 @@ apply plugin: 'com.android.application'
 android {
     compileSdkVersion 25
     buildToolsVersion "25.0.2"
+
     defaultConfig {
-        applicationId "vn.luongvo.widget.iosswitchview"
-        minSdkVersion 9
+        applicationId "vn.luongvo.widget.iosswitchview.sample"
+        minSdkVersion 11
         targetSdkVersion 25
         versionCode 1
         versionName "1.0"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
     }
+
     buildTypes {
         release {
             minifyEnabled false
@@ -20,11 +22,11 @@ android {
 }
 
 dependencies {
-    compile fileTree(dir: 'libs', include: ['*.jar'])
+    compile 'com.android.support:appcompat-v7:25.2.0'
+    compile project(':library')
+
     androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
         exclude group: 'com.android.support', module: 'support-annotations'
     })
-    compile 'com.android.support:appcompat-v7:25.2.0'
-    compile 'com.android.support.constraint:constraint-layout:1.0.1'
     testCompile 'junit:junit:4.12'
 }
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 11912d6..d6762c1 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="vn.luongvo.widget.iosswitchview" >
+    package="vn.luongvo.widget.iosswitchview.sample">
 
     <application
         android:allowBackup="true"
diff --git a/app/src/main/java/vn/luongvo/widget/iosswitchview/MainActivity.java b/app/src/main/java/vn/luongvo/widget/iosswitchview/MainActivity.java
deleted file mode 100644
index 3a21c0c..0000000
--- a/app/src/main/java/vn/luongvo/widget/iosswitchview/MainActivity.java
+++ /dev/null
@@ -1,13 +0,0 @@
-package vn.luongvo.widget.iosswitchview;
-
-import android.support.v7.app.AppCompatActivity;
-import android.os.Bundle;
-
-public class MainActivity extends AppCompatActivity {
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        setContentView(R.layout.activity_main);
-    }
-}
diff --git a/app/src/main/java/vn/luongvo/widget/iosswitchview/sample/MainActivity.java b/app/src/main/java/vn/luongvo/widget/iosswitchview/sample/MainActivity.java
new file mode 100644
index 0000000..bc6cc5c
--- /dev/null
+++ b/app/src/main/java/vn/luongvo/widget/iosswitchview/sample/MainActivity.java
@@ -0,0 +1,30 @@
+package vn.luongvo.widget.iosswitchview.sample;
+
+import android.os.Bundle;
+import android.support.v7.app.AppCompatActivity;
+import android.view.View;
+import android.widget.Toast;
+
+import vn.luongvo.widget.iosswitchview.SwitchView;
+
+public class MainActivity extends AppCompatActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        final SwitchView switchView = (SwitchView) findViewById(R.id.switchview);
+        switchView.setOnStateChangedListener(new SwitchView.OnStateChangedListener() {
+            @Override
+            public void toggleToOn(View view) {
+                Toast.makeText(MainActivity.this, "StateChanged: On", Toast.LENGTH_SHORT).show();
+            }
+
+            @Override
+            public void toggleToOff(View view) {
+                Toast.makeText(MainActivity.this, "StateChanged: Off", Toast.LENGTH_SHORT).show();
+            }
+        });
+    }
+}
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index f110186..aecf327 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -1,19 +1,16 @@
 <?xml version="1.0" encoding="utf-8"?>
-<android.support.constraint.ConstraintLayout
-    xmlns:android="http://schemas.android.com/apk/res/android"
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    tools:context="vn.luongvo.android.widgets.ios.switchview.MainActivity">
+    android:gravity="center_horizontal"
+    android:orientation="vertical"
+    android:padding="10dp"
+    tools:context=".MainActivity">
 
-    <TextView
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:text="Hello World!"
-        app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintLeft_toLeftOf="parent"
-        app:layout_constraintRight_toRightOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
+    <vn.luongvo.widget.iosswitchview.SwitchView
+        android:id="@+id/switchview"
+        android:layout_width="50dp"
+        android:layout_height="wrap_content" />
 
-</android.support.constraint.ConstraintLayout>
+</LinearLayout>
diff --git a/app/src/main/res/values/styles.xml b/app/src/main/res/values/styles.xml
index daa2a5c..5885930 100644
--- a/app/src/main/res/values/styles.xml
+++ b/app/src/main/res/values/styles.xml
@@ -1,7 +1,7 @@
 <resources>
 
     <!-- Base application theme. -->
-    <style name="AppTheme" parent="Theme.AppCompat">
+    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
         <!-- Customize your theme here. -->
         <item name="colorPrimary">@color/colorPrimary</item>
         <item name="colorPrimaryDark">@color/colorPrimaryDark</item>