Set default activity stream filter

yzc_set_default_activity_directory_filter.php

<?php
/**
 * Set default activity stream filter.
 */
function yzc_set_default_activity_directory_filter() {

    if ( isset( $_COOKIE['bp-activity-filter'] ) || ! bp_is_activity_directory() ) {
        return ;
    }

    // Filter
    $filter = 'activity_status';

    // Set Cookies.
    setcookie( 'bp-activity-filter', $filter,null, '/' );
    $_COOKIE['bp-activity-filter'] = $filter;

}

add_action( 'bp_template_redirect', 'yzc_set_default_activity_directory_filter' );