how to hide up button in actionbar

Question

I would like to do an edit mode, in the style of the tablet gmail app. If the user presses the edit button on the actionbar, than I would like to show him/her an action view

Answer 1

This worked for me, though its a slight change in the above mentioned solution

android.support.v7.app.ActionBar actionBar = getSupportActionBar();
        if (actionBar != null) {
            actionBar.setHomeButtonEnabled(false); // disable the button
            actionBar.setDisplayHomeAsUpEnabled(false); // remove the left caret
            actionBar.setDisplayShowHomeEnabled(false); // remove the icon
        }