iOS设计模式 - 抽象工厂

原理图

说明

1. 抽象工厂指的是提供一个创建一系列相关或者相互依赖对象的接口,而无需指定它们具体的类

2. 如果多个类有相同的行为,但实际实现不同,则可能需要某种抽象类型作为其父类被继承,抽象类型定义了所有相关具体类将共有的共同行为

源码

////  BrandingFactory.h//  AbstractFactoryPattern////  Created by YouXianMing on 15/8/2.//  Copyright (c) 2015年 YouXianMing. All rights reserved.//#import 
    
     #import 
     
      @interface BrandingFactory : NSObject/** *  抽象工厂方法 * *  @return 具体的工厂 */+ (BrandingFactory *)factory;/** *  该工厂生产的brandedView(由具体工厂构造) * *  @return 生产好的brandedView */- (UIView *)brandedView;/** *  该工厂生产的brandedMainButton(由具体工厂构造) * *  @return 生产好的brandedMainButton */- (UIButton *)brandedMainButton;@end
     
    

////  BrandingFactory.m//  AbstractFactoryPattern////  Created by YouXianMing on 15/8/2.//  Copyright (c) 2015年 YouXianMing. All rights reserved.//#import "BrandingFactory.h"#import "AcmeBrandingFactory.h"#import "SierraBrandingFactory.h"@implementation BrandingFactory+ (BrandingFactory *)factory {        if ([[self class] isSubclassOfClass:[AcmeBrandingFactory class]]) {                return [AcmeBrandingFactory new];            } else if ([[self class] isSubclassOfClass:[SierraBrandingFactory class]]) {            return [SierraBrandingFactory new];            } else {            return nil;    }}- (UIView *)brandedView {    return nil;}- (UIButton *)brandedMainButton {    return nil;}@end

////  AcmeBrandingFactory.h//  AbstractFactoryPattern////  Created by YouXianMing on 15/8/2.//  Copyright (c) 2015年 YouXianMing. All rights reserved.//#import "BrandingFactory.h"@interface AcmeBrandingFactory : BrandingFactory@end

////  AcmeBrandingFactory.m//  AbstractFactoryPattern////  Created by YouXianMing on 15/8/2.//  Copyright (c) 2015年 YouXianMing. All rights reserved.//#import "AcmeBrandingFactory.h"@implementation AcmeBrandingFactory- (UIView *)brandedView {        NSLog(@"AcmeBrandedView");    return nil;}- (UIButton *)brandedMainButton {        NSLog(@"AcmeBrandedMainButton");    return nil;}@end

////  SierraBrandingFactory.h//  AbstractFactoryPattern////  Created by YouXianMing on 15/8/2.//  Copyright (c) 2015年 YouXianMing. All rights reserved.//#import "BrandingFactory.h"@interface SierraBrandingFactory : BrandingFactory@end

////  SierraBrandingFactory.m//  AbstractFactoryPattern////  Created by YouXianMing on 15/8/2.//  Copyright (c) 2015年 YouXianMing. All rights reserved.//#import "SierraBrandingFactory.h"@implementation SierraBrandingFactory- (UIView *)brandedView {        NSLog(@"SierraBrandedView");    return nil;}- (UIButton *)brandedMainButton {        NSLog(@"SierraBrandedMainButton");    return nil;}@end

分析

关系原理图