Thank you so much for your post, I spent half day to figure out how to get field names by their group.
If you have field names, you can easily get their values: get_field($field[‘name’]);
EXAMPLE HOW TO GET IMAGES FOR SLIDER
<?php
//or insert the ID of your fields Group.
$groupID='116';
$custom_field_keys = get_post_custom_keys($groupID);
foreach ( $custom_field_keys as $key => $fieldkey )
{
if (stristr($fieldkey,'field_'))
{
//echo $key . " => " . $fieldkey . "<br />";
//echo $field['label'] . ': ' . $field['value'];
//echo $fieldkey . "<br />";
$field = get_field_object($fieldkey, $groupID);
$acf_field_name = $field['name'];
$attachment = get_field($acf_field_name);
echo "<img src="".$attachment["url']."' title="".$attachment["title']."'/>";
}
}
?>
Thanks again!