Android spinner behavior

Question

I overwrite the behavior of a spinner, to add odd and even colors to the drop down list, in this way.

    SimpleCursorAdapter productsListAdapter = new SimpleCursorAdapter(MyActivity.this, R.layout.spinner_drop_down_products, cursor, column, viewIds) {
    @Override
    public View getDropDownView(int position, View convertView, ViewGroup parent) {
        View view = super.getDropDownView(position, convertView, parent);
        if (position % 2 == 0) { 
            view.setBackgroundColor(android.graphics.Color.rgb(255, 255, 255));
        } else {
            view.setBackgroundColor(android.graphics.Color.rgb(214, 214, 214));
        }
        return view;
    }
};

The dropdown rows look as i expected ... but i loose the highlight on pressing each row. What i forget to add to the code? Thanks

score 0 · Accepted Answer · edited May 23 '17 at 11:56

Actually android framework uses selectors for all states like:

normal enabled
pressed
highlight
focused

The default selector for list is list_selector_background.xml You can see here.

You have to provide this by yourself. Say you have made a you_own_selector.xml then you will give this as a background of your View like this:

view.setBackgroundColor(R.drawable.you_own_selector);

Here is another nice post about using selectors in android.

Android spinner behavior

1 Answers1