Question

$instance = array(
      'field_name' => $field_name,
      'entity_type' => $entity,
      'bundle' => $bundle,
      'field types' => 'list_boolean',
      'widget' => array(
            'type' => 'options_onoff',
            'settings' => array('display_label' => 1)
        ),
      'default_value' => array(array('value' => 1)),
    );

this is not taken, and i have to save it twice in the admin contenttype – field/edit,
until it takes it …

Answer 1

i now exported the finished field with the features module,
and took the generated code – suddenly it works, with default_value

i guess i was missing the property module on the field, also field types is inexistant ..