yes using the user_id as filter.

To get the author ID of a listing, you can use get_the_author_meta

Here you can find examples: https://codex.buddypress.org/developer/loops-reference/the-activity-stream-loop/#filtering-examples

Thanks

This is my add new tab in functions.php

<?php add_filter('geodir_detail_page_tab_list_extend', 'geodir_detail_page_tab_list_extend') ;

function geodir_detail_page_tab_list_extend($tab_array)
{
 	$tab_array['my_new_tab'] = array( 
										'heading_text' =>  __('New Tab',GEODIRECTORY_TEXTDOMAIN),
										'is_active_tab' => false,
										'is_display' =>  apply_filters('geodir_detail_page_tab_is_display', true, 'my_new_tab'),
										'tab_content' => ''
									);
	return $tab_array ;
}
add_action('geodir_after_tab_content' ,'geodir_my_new_tab_content');
function geodir_my_new_tab_content($tab_index)
{
	if($tab_index =='my_new_tab')
	{
		echo "Hello world!!";
	}
}
?>

where would i add the following basic activity loop?

<?php if ( bp_has_activities( bp_ajax_querystring( 'activity' ) ) ) : ?>
    <?php while ( bp_activities() ) : bp_the_activity(); ?>
 
        <?php locate_template( array( 'activity/entry.php' ), true, false ); ?>
 
    <?php endwhile; ?>
<?php endif; ?>

Thanks

if($tab_index =='my_new_tab')
	{?>
		
<?php if ( bp_has_activities( bp_ajax_querystring( 'activity' ) ) ) : ?>
    <?php while ( bp_activities() ) : bp_the_activity(); ?>
 
        <?php locate_template( array( 'activity/entry.php' ), true, false ); ?>
 
    <?php endwhile; ?>
<?php endif; } ?>

Thanks

<?php function get_user(){

global $bp;
$username = $bp->loggedin_user->id;
echo $username;
}

get_user(); ?>

how would i add it to the new tab?

to do that, you should ask for support on the buddypress forum, don’t you think?

The function you need is not part of our plugin and we don’t support 3rd party plugins.

Our responsability is to tell you how to create the new GD tab and how to put new content in it.

To write a function for another plugin to actually create the content is part of your job.

Thanks

<?php function get_user(){

global $bp;
$username = $bp->loggedin_user->id;
echo $username;
}

get_user(); ?>

into my new tab?

add_action('geodir_after_tab_content' ,'geodir_my_new_tab_content');
function geodir_my_new_tab_content($tab_index)
{
	if($tab_index =='my_new_tab')
	{
	global $bp;
        $username = $bp->loggedin_user->id;
        echo $username;
	}
}

Let us know,

Thx