在Interface Builder

Question

我有一个自定义控件和自定义委托：

@class MyButtonSubclass;
@protocol MyButtonSubclass Delegate <NSObject>
@optional
- (void)delegateMethod:(NSString *)param;

@end

@interface MyButtonSubclass : UIButton

@property (nonatomic, weak) id < MyButtonSubclass Delegate> delegate;
@property (nonatomic, strong) NSString* param;

@end

我在Storyboard中创建了一个带有自定义子类的按钮：

有没有办法让自定义委托出现在故事​​板中的可连接属性列表中？

Answer 1

好哇！答案很简单地盯着我。 delegate（或dataSource）定义需要包含IBOutlet：

@class MyButtonSubclass;
@protocol MyButtonSubclass Delegate <NSObject>
@optional
- (void)delegateMethod:(NSString *)param;

@end

@interface MyButtonSubclass : UIButton

@property (nonatomic, weak) IBOutlet id < MyButtonSubclass Delegate> delegate;
//                              ^ This!       
@property (nonatomic, strong) NSString* param;

@end