How to change home as up resource programmatically?

Question

I know how to change the homeAsUpIndicator in the styles xml file. The question is how to change it programmatically.

The reason I want to do it bec

Answer 1

Here is working code

final Drawable upArrow = getResources().getDrawable(R.drawable.ic_arrow_back_black_24dp);
        upArrow.setColorFilter(Color.parseColor("#000000"), PorterDuff.Mode.SRC_ATOP);
        getSupportActionBar().setHomeAsUpIndicator(upArrow);