<h1><b>Android:Styling Buttons</b></h1>

In this tutorial we will see how we can change the default appearance of a button. For this we need to customize three different states of button i.e. default state, pressed state and focused state.
Output will be as:(When button is pressed)

Xml files:
1. activity_main(res/layout):

 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  
   xmlns:tools="http://schemas.android.com/tools"  
   android:layout_width="match_parent"  
   android:layout_height="match_parent"  
       android:padding="10dp"  
       android:orientation="vertical"  
   >  
   <Button   
     android:id="@+id/button1"  
     android:layout_width="200dp"  
     android:layout_height="50dp"  
     android:background="@drawable/custom_button"  
     android:text="Button"  
     />  
   </LinearLayout>  

2. custom_button.xml(res/drawable):
Now here we need to create a new xml file(custom_button.xml) under res/drawable that will customize the three states of button.

 <?xml version="1.0" encoding="utf-8"?>  
 <selector xmlns:android="http://schemas.android.com/apk/res/android" >  
   <item android:state_pressed="true"   
     android:drawable="@color/change"  
     >  
    </item>  
   <item android:state_focused="true"  
     android:drawable="@color/change"  
     >  
    </item>   
   <item android:drawable="@color/default_color">  
    </item>  
 </selector>  

3. colors.xml(res/values):
We also need to create colors.xml under res/values to define the colors.

 <?xml version="1.0" encoding="utf-8"?>  
 <resources>  
   <color name="change">#5F9EA0</color>  
   <color name="default_color">#ACACAC</color>  
 </resources>