how to change color of radi button selected in alerdialog
AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(
            getActivity(),
            R.style.MaterialThemeDialog);
    alertDialogBuilder.setTitle(R.string.image_resolution);
    alertDialogBuilder.setSingleChoiceItems(R.array.quality_labels, getPosition(), this);
    AlertDialog alertDialog = alertDialogBuilder.create();
    alertDialog.show();
