Here is source code of the Program to to Change the Background of Action Bar in Android. The program is successfully compiled and run on a Windows system using Eclipse Ide. The program output is also shown below.
MainActivity.java
package com.example.change_background_action_bar; import android.R.drawable; import android.annotation.SuppressLint; import android.app.ActionBar; import android.app.Activity; import android.graphics.drawable.Drawable; import android.os.Bundle; import android.view.Menu; import android.view.View; import android.widget.Button; @SuppressLint("NewApi") public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Button change = (Button)findViewById(R.id.button1); change.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub ActionBar actionBar = getActionBar(); Drawable dr; dr = Drawable.createFromPath("@drawable/bar"); actionBar.setBackgroundDrawable(dr); } }); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } }