Android – How to remove app name from ActionBar

ActionBar actionBar = getActionBar();
actionBar.setDisplayShowTitleEnabled(false);
actionBar.setDisplayShowHomeEnabled(false);

Or you can just call actionbar.setTitle("")

If you want to hide it use this code

getSupportActionBar().setDisplayShowTitleEnabled(false)

or if you want to change the name use this

getSupportActionBar().setTitle("type yor title here");

Call setDisplayShowHomeEnabled() and setDisplayShowTitleEnabled() on ActionBar, which you get via a call to getActionBar().