Protocol协议的公开和非公开实现

如何让协议的函数非公开

如果我想让遵守协议的Object，其协议方法为『非公开实现』，只需要在「.m」文件里的interface后声明遵守协议。

//FatherObject.h
#import <Foundation/Foundation.h>
//协议
@protocol FatherDelegate <NSObject>
@required
- (void)doDelegateMthod;
@end

//父类
@interface FatherObject : NSObject
@property (nonatomic, weak) id<FatherDelegate> delegate;
@end

//FatherObject.m
#import "FatherObject.h"
//在此处的Extends后声明遵守协议
@interface FatherObject () <FatherDelegate>
@end
@implementation FatherObject

- (void)doDelegateMthod {
    NSLog(@"Do Delegate Method In Father");
}

@end

如何让协议的函数公开

如果我想让遵守协议的Object，其协议方法为『公开实现』，只需要在「.h」文件里的interface后声明遵守协议。

//FatherObject.h
#import <Foundation/Foundation.h>
//协议
@protocol FatherDelegate <NSObject>
@required
- (void)doDelegateMthod;
@end

//父类
//在此处的Interface后声明遵守协议
@interface FatherObject : NSObject <FatherDelegate>
@property (nonatomic, weak) id<FatherDelegate> delegate;
@end

//FatherObject.m
#import "FatherObject.h"

@implementation FatherObject

- (void)doDelegateMthod {
    NSLog(@"Do Delegate Method In Father");
}

@end

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