private void setColumnWidth(int columnWidth) {
listView.setRequestedColumnWidth(Utils.dpToPx(this, columnWidth));
listView.determineColumns();
listView.setAdapter(getNewAdapter());
}
private void setNumColumns(int numColumns) {
listView.setRequestedColumnCount(numColumns);
listView.determineColumns();
listView.setAdapter(getNewAdapter());
}