How to customize the back button on ActionBar

Question

I have been able to customize the action bar\'s background, logo image and text color using suggestions from these:
Android: How to change the ActionBar "Home"

Answer 1

So you can change it programmatically easily by using homeAsUpIndicator() function that added in android API level 18 and upper.

ActionBar().setHomeAsUpIndicator(R.drawable.ic_yourindicator);

If you use support library

getSupportActionBar().setHomeAsUpIndicator(R.drawable.ic_yourindicator);