Am 07.03.2010 um 03:57 schrieb Jon: > I get indications from reading that you shouldn't really subclass UIView in > general or to do routine things, and that any time you implement drawRect in > the subclass of a UIView, you are taking a performance hit compared to > doing some drawing in other ways?
No. Where does it say that? A view draws data (like an image) but should know nothing about any model (that is is an image of a person record). A view controller feeds the data (image of person) to its views. So, if you have a special drawing ou need to perform subclass a view and implement drawRect. > is this true, in the case of doing this in the ViewController, is this > below more efficient? or better? or what? Your example just adds a subview, nothing else. It make no sense for your question as you don’t draw anything. > then drawing within an NStimer loop in this added subView inside the > viewController? (the subview bounds are as big as the whole view) NSTimer? What? Why? Please explain what you want to do. > etc.... > > I guess i am not sure which way to go.. (do everything in a UIView subclass, > or do everything in a UIViewController subclass.) Usually neither. You share the work between them. Please read this: http://developer.apple.com/iPhone/library/documentation/General/Conceptual/DevPedia-CocoaCore/MVC.html > it doesn't seem like anything you do in the controller, is easy to get to > draw in a UIView subclass, and maybe equally hard to get stuff to translate > over to the controller if you do a lot of work in the UIView... If your view has to do "a lot of work" something is wrong. The view just draws information. It does not work on them. > i'm just lost as to how an NSTimer and a looping set of code should be worked > into these two classes.. should it be in the UIView? or the Controller? > seems like it should be in the controller, but then really all the work has > to be in the controller, since you can't even call the drawRect while in the > controller, so what would you do in the UIView? > > any of that make sense? No. Because you did not tell at all what you try to achieve with your timer and view. atze _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
