在情节提要的UIView中使用子类

Question

In my ViewController.h, I have the following.

#import <UIKit/UIKit.h>
#import <TimesSquare/TimesSquare.h>

@interface PlusCalendarView : TSQCalendarView;

@end

@interface ViewController : UIViewController

@property (nonatomic, strong) NSCalendar *calendar;
//@property (strong, nonatomic) IBOutlet TSQCalendarView *myCalendarView;
@property (strong, nonatomic) IBOutlet PlusCalendarView *myCalendarView;


@end

I want to override some methods in TSQCalendarView, so I created a subclass called PlusCalendarView. My storyboard looks like below:

The one above is a UIView element and the other is a tableView. The UIView element has a custom class called "PlusCalendarView" and is connected to the PlusCalendarView outlet in ViewController.h

My question: This fails with an error Unknown class PlusCalendarView in Interface Builder file. and I assume that's because storyboard doesn't know about my custom subview called PlusCalendarView. What should I change to fix this problem?

Answer 1

You need to create the interface (.h) and implementation (.m) of your custom class. Use File new, tell it you want to create a Cocoa class named PlusCalendarView, and make it's base class TSQCalendarView. Add the files to your project and make sure the .m file is set to be included in your app target.

That should do it. Interface Builder knows how to find all the classes that are defined in the files in your project.