iOS 工厂模式

直接上代码：(持续更新中....)

SportMan.h 运动员接口，协议

#import <Foundation/Foundation.h>

NS_ASSUME_NONNULL_BEGIN

@protocol SportMan <NSObject>

- (void)run;

- (void)jump;

@end

NS_ASSUME_NONNULL_END

Footballer.h 足球运动员实现SportMan协议

#import <Foundation/Foundation.h>
#import "SportMan.h"

NS_ASSUME_NONNULL_BEGIN

@interface Footballer : NSObject<SportMan>

@end

NS_ASSUME_NONNULL_END

Footballer.m

#import "Footballer.h"

@implementation Footballer

- (void)run{
    NSLog(@" Footballer run");
}

- (void)jump{
    NSLog(@" Footballer jump");
}

@end

SportsAssociation.h 运动员协会

#import <Foundation/Foundation.h>

NS_ASSUME_NONNULL_BEGIN


@protocol SportsAssociation <NSObject>

- (id)registerSportMan;

@end

NS_ASSUME_NONNULL_END

FootballAssociation.h 足球运动员协会

#import <Foundation/Foundation.h>
#import "SportsAssociation.h"

NS_ASSUME_NONNULL_BEGIN

@interface FootballAssociation : NSObject<SportsAssociation>

@end

NS_ASSUME_NONNULL_END

FootballAssociation.m

#import "FootballAssociation.h"
#import "Footballer.h"

@implementation FootballAssociation

- (id)registerSportMan{
    return [Footballer new];
}

@end

Club.h 俱乐部

#import <Foundation/Foundation.h>
#import "Footballer.h"

NS_ASSUME_NONNULL_BEGIN

@interface Club : NSObject

@property(nonatomic,strong)Footballer *goalkeeper;
@property(nonatomic,strong)Footballer *forwordMan;
@property(nonatomic,strong)Footballer *guardMan;

- (void)test;
@end

NS_ASSUME_NONNULL_END

Club.m

#import "Club.h"

@interface Club()


@end

@implementation Club

- (void)test{
    if (self.goalkeeper && self.forwordMan && self.guardMan) {
        NSLog(@"队员已齐，开始比赛");
        [self.forwordMan run];
        [self.forwordMan jump];
        
    }else{
        NSLog(@"队员没有到场");
    }
}

main 方法

#import <Foundation/Foundation.h>
#import "Club.h"
#import "FootballAssociation.h"
#import "SportManFactory.h"
#import "SportsAssociation.h"


int main(int argc, const char * argv[]) {
    @autoreleasepool {
        // insert code here...
        
        Club *club = [[Club alloc] init];
        FootballAssociation *footballAssociation = [[FootballAssociation alloc] init];
        
        SportManFactory *factory = [[SportManFactory alloc] initWithBuilder:footballAssociation];
        club.forwordMan = [factory registerSportMan];
        club.goalkeeper = [factory registerSportMan];
        club.guardMan  = [factory registerSportMan];
        
//        club.forwordMan = [footballAssociation registerSportMan];
//        club.goalkeeper = [footballAssociation registerSportMan];
//        club.guardMan  = [footballAssociation registerSportMan];
        [club test];
    }
    return 0;
}

输出

2021-06-08 22:55:56.328076+0800 Factory[13311:341264] 队员已齐，开始比赛
2021-06-08 22:55:56.328334+0800 Factory[13311:341264]  Footballer run
2021-06-08 22:55:56.328357+0800 Factory[13311:341264]  Footballer jump
Program ended with exit code: 0