add_menu_page() with function inside a class [duplicate]

add_action must be inside the plugin class and should look like

 add_action( 'admin_menu', array( $this, 'add_menu_items' ) );

Usually this line presents in the __construct() method.

Related Posts:

  1. Set different custom menu items for different user roles
  2. Add a page in admin without adding menu item
  3. add_menu_page() with different name for first submenu item
  4. Passing arguments to a admin menu page callback?
  5. Admin settings update updating every time home page is hit?
  6. What’s the best method for emptying an option created with the Settings API?
  7. What is the recommended way to create plugin administration forms?
  8. How to add a new plugin page under desired Options page?
  9. Is it possible to add an admin page using add_submenu_page() and pass a var in the query string?
  10. Overwriting Core WordPress Functions with Plugins
  11. Naming Admin Menus and Submenus
  12. Current class on admin menu using add_submenu_page()
  13. Add Admin Menu Inside Construct or Init
  14. Master menu item for multiple plugins?
  15. Hook event for upload image in the menu
  16. Menu Error in Admin Console with Custom Plugin: You do not have sufficient permissions to access this page
  17. How to add Font Awesome 5 icons in WP Admin dashboard menu?
  18. How to put placeholder text in the main post input area?
  19. Unified Approach for Placing Option Pages
  20. Plugin with specific admin menu icon
  21. How to avoid creating first submenu page that is same as menu page?
  22. OOP Plugin and Menu – Call to undefined function register_setting()
  23. Global State During an Admin Post
  24. Howto: Use Custom Post Types as Submenu Items in Admin
  25. Sub Menu content is being duplicated
  26. Show/Hide ‘add new user’ custom fields in wordpress admin panel by click another field
  27. Bootstrap doesn’t work on admin menu page-How to override wp-admin style?
  28. is it recommended to use WP_List_Table?
  29. Plugin sub-menu pages recommended structure and links
  30. Is there documentation reference for forms in menu and setting pages?
  31. Creating Admin Plugin – Content of a page is displayed at global scope as well
  32. Silently register plugin pages
  33. WordPress theme options Menu
  34. Print Dashboard submenu name and filename
  35. Issue on Setting $icon_url Parameter on WP add_menu_page()
  36. I am trying to make a page in the admin section similar to the appearance of the Profile page for users
  37. Unable to get a simple plugin admin page to work
  38. Disable Auto-Expanding Menu in WordPress Admin Menus
  39. in_array function Problem
  40. Use options to control jQuery plugin
  41. Restrict certain actions to plugin-specific admin menu pages only
  42. Proper way to create an administration page without adding it to the menu
  43. Pause plugin option page until all data manipulation is complete
  44. How to add text editor in plugin menu?
  45. How to make an admin plugin menu page go full screen?
  46. How to add admin.php to WP Admin Menu Link
  47. add menu page in loop menu order
  48. Convert each new line in the textfield as a new value in an array
  49. How put the correct URL to sub-menu plugin?
  50. Developing a plugin where users can edit entries saved in database
  51. Add Admin menus or submenus depending on conditions
  52. Add a description/hint field in the admin page of a plugin
  53. Forcing ALL plugin Admin menus into a separate menu
  54. Link to a admin submenu item using a custom link
  55. Plugin admin list pages as submenu
  56. Change Admin menu placement using hooks
  57. Menu_slug used for creating options page
  58. How to design WooCommerce-like admin tabs for plugin settings page?
  59. Is it possible to add Custom Dashboard Widgets to Custom Admin Menu Page?
  60. Show Admin Menu
  61. Is there a way to decide from init whether we are on a certain backend page?
  62. adding an options menu that allows saving multiple sets of said options
  63. Admin adding submenu that has the same destination as the parent menu
  64. Plugin directory “Last Updated” not changed after initial commit?
  65. Fatal error: Call to undefined function wp_mail()
  66. Does WordPress have an Browser Agent?
  67. How Do I Load My Action Earlier Enough?
  68. I can’t find where a hook is being defined in a plugin – Easy Digital Downloads
  69. Filter on the_content ignores shortcodes
  70. Custom theme sufficient or custom plugin neccessary for this feature set?
  71. Add Submenu Link in add_submenu_page That Opens in a New Window
  72. How do I alter the position of a Custom Post Type menu item within my plugin admin menu?
  73. How to check if a stylesheet is already loaded?
  74. Plugin directory says that my plugin it’s not availabe in Spanish, but it is
  75. wp_editor add media button not working
  76. Plugin Development – Class Constructor Not Firing wp_enqueue_style action hook
  77. Alternative functions for mysql_free_result and mysql_ping in wordpress functions
  78. WordPress publish_post hook not getting featured image and meta on first publish, but works on updating title
  79. Add function after the_content
  80. How to add custom view links to wp-admin/post.php?
  81. How do I get variables from my plugin’s settings page?
  82. Get post thumbnail in WP_Query
  83. How To Protect Plugin Display From Being Affected By Theme’s CSS
  84. wp_schedule_event not executing function call, even with add_action
  85. Custom admin menu order fails if slugs are complicated
  86. How to query a nested field in wordpress api using _fields param
  87. function add custom fields to media gallery
  88. Add quick edit functionnality to plugin table
  89. using wordpress acf shortcods in tables goes outside the table
  90. $_SESSION inside php function executed by AJAX
  91. Two same AJAX calls – one is working, other doesn’t
  92. remove different admin menu for specific users
  93. add pagination to wp_remote_get
  94. Shortcode from a plugin not working
  95. How to get option values without requiring wp-load?
  96. Can’t get query string in ajax call
  97. WP Cron registers hook without any action (does not call the function)
  98. Fetch Custom Woocomerce filed data and check the data avialble in Wp-user table as nicname or username using function.php
  99. How to get locale within WP REST Request?
  100. How to add extra EXIF data when images are uploaded?