Error message

User warning: The following theme is missing from the file system: netwalkapps. For information about how to fix this, see the documentation page. in _drupal_trigger_error_with_delayed_logging() (line 1128 of /var/www/www.netwalk.be/htdocs/includes/bootstrap.inc).

NWImageViewer

So often you need to show a UIImage which allows zooming & panning.  You could either use a fullblown imageview controller (which takes over all ownership of the image viewing), or write it yourself within your viewcontroller.

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