Change Design on Button Press of Any Object in Android

Introduction

 
First, create an Android Project in the Eclipse IDE.
 
Android Project
 
Then open the XML file and drag and drop one button to the Graphical Layout of the XML file. 
 
drag and drop one button in
 
Now create one XML file in the drawable folder and use two images for seeing the changes on a button press.
 
Create one xml file
 
drawable folder
 
Chosen qualifiers
 
Default Button Image.
 
Default Button Image
 
On Button Pressed Image.
 
Button Pressed Image
 
Paste both the images into the drawable folder.
 
design
 
Open the design.xml file and write the following code in the XML file,
  1. <?xml version="1.0" encoding="utf-8"?>    
  2.    <selector xmlns:android="http://schemas.android.com/apk/res/android">    
  3.          <item android:state_pressed="true"    
  4.                android:drawable="@drawable/buttonclicked" /> <!-- pressed -->    
  5.          <item android:drawable="@drawable/buttondefault" /> <!-- default -->    
  6.    </selector>   
    Here buttonclicked and buttondefault are the image's name.
     
    Now open the activity_main.xml file from the layout folder and here's the file code:
    1. <RelativeLayout    
    2.     xmlns:android="http://schemas.android.com/apk/res/android"    
    3.     xmlns:tools="http://schemas.android.com/tools"    
    4.     android:layout_width="match_parent"    
    5.     android:layout_height="match_parent"    
    6.     android:paddingBottom="@dimen/activity_vertical_margin"    
    7.     android:paddingLeft="@dimen/activity_horizontal_margin"    
    8.     android:paddingRight="@dimen/activity_horizontal_margin"    
    9.     android:paddingTop="@dimen/activity_vertical_margin"    
    10.     tools:context="com.example.demo.MainActivity" >    
    11.     <Button    
    12.      android:id="@+id/button1"    
    13.      android:layout_width="wrap_content"    
    14.      android:layout_height="wrap_content"    
    15.      android:layout_alignParentLeft="true"    
    16.      android:layout_alignParentRight="true"    
    17.      android:layout_alignParentTop="true"    
    18.      android:layout_marginTop="97dp"    
    19.      android:text="Button"     
    20.      android:background="@drawable/design"/>    
    21. </RelativeLayout>   
      android: background=”@drawable/design” is used to select the design.xml file in the background of the button.
       
      Then run the Android application.
       
      Before the button is pressed
       
      Before Button Pressed
       
      On pressing the button
       
      Button Pressed
       

      Summary

       
      So you can use this XML file is for any object in Android and is also useful for anything in design.xml such as images and colors.
       
      Thank you.