Activate theme via plugin script?

Question

I have a plugin that installs a folder of themes and other plugins into the WP site during plugin activation.

I would like to place script into the plugin which will activate one of the themes that the plugin installs.

Can someone post a quick example of script that registers and activates a known theme via a plugin's activation script?

Answer 1

switch_theme() should work:

function myplugin_activate() {
  switch_theme('default', 'default');
}

register_activation_hook( __FILE__, 'myplugin_activate' );