Adding custom tab to user profile

buddypress-user-custom-tab

<?php
/**
 * Display content on tab.
 */
function buddydev_custom_screen_content() {
	echo 'hello BuddyDev';
}

/**
 * Callback screen function.
 */
function buddydev_custom_screen() {
	add_action( 'bp_template_content', 'buddydev_custom_screen_content' );
	bp_core_load_template( 'members/single/plugins' );
}

add_action( 'bp_setup_nav', function() {
	// Add tab here.
	bp_core_new_nav_item(
		array(
			'name'                    => __( 'Custom Tab' ),
			// Display name for the nav item.
			'slug'                    => 'custom',
			// URL slug for the nav item.
			'item_css_id'             => false,
			// The CSS ID to apply to the HTML of the nav item.
			'show_for_displayed_user' => true,
			// When viewing another user does this nav item show up?
			'position'                => 99,
			// Index of where this nav item should be positioned.
			'screen_function'         => 'buddydev_custom_screen',
			// The name of the function to run when clicked.
			'default_subnav_slug'     => false,
			// The slug of the default subnav item to select when clicked.
		)
	);
});