I started developing a custom drupal theme from scratch(http://www.codexworld.com/create-drupal-custom-theme-from-scratch/).
In appearance menu below disabled themes, there was a drop-down menu for admin theme with theme names and a checkbox. As a curious person when I set admin theme to my custom theme(i am developing) I was unable to see Website pages & the Drupal admin dashboard because theme is empty/under developement. How to get back the default admin theme?
Edit: After Using acrosman's answer(adding
$conf['theme_default'] = 'bartik'; in
settings.php) i can see pages but still unable to see admin panel because I am using that incomplete theme as admin theme
How to Manually change the admin theme in Drupal 7?
What I Found: drupal is a popular website cms but you can't change the admin theme very easily if you chosen a wrong theme as admin theme by mistake.