iOS设计模式之抽象工厂

设计模式是程序提升的必备知识，这里说下iOS怎样实现抽象工厂设计模式。本文是看过oc编程之道这本的抽象工厂这章后写出的，假设不明确原理能够看看那本书。

TestView.h首先创建一个视图

// // TestView.h // AbstractFactory // // Created by 杜甲 on 11/10/14. // Copyright (c) 2014 杜甲. All rights reserved. // #import <UIKit/UIKit.h> @interface TestView : UIView @end TestView.m

// // TestView.m // AbstractFactory // // Created by 杜甲 on 11/10/14. // Copyright (c) 2014 杜甲. All rights reserved. // #import "TestView.h" @implementation TestView - (id)initWithFrame:(CGRect)frame { if (self = [super initWithFrame:frame]) { self.backgroundColor = [UIColor redColor]; } return self; } @end 接下来创建两个类TestFactory、TestBrandingFactory 当中 TestFactory继承TestBrandingFactory。详细实现例如以下：

TestBrandingFactory.h

// // TestBrandingFactory.h // AbstractFactory // // Created by 杜甲 on 11/10/14. // Copyright (c) 2014 杜甲. All rights reserved. // #import <Foundation/Foundation.h> #import <UIKit/UIKit.h> @interface TestBrandingFactory : NSObject + (TestBrandingFactory *)factory; - (UIView *)createTestView:(CGRect)frame; @end TestBrandingFactory.m

// // TestBrandingFactory.m // AbstractFactory // // Created by 杜甲 on 11/10/14. // Copyright (c) 2014 杜甲. All rights reserved. // #import "TestBrandingFactory.h" #import "TestFactory.h" @implementation TestBrandingFactory + (TestBrandingFactory *) factory { return [[TestFactory alloc] init]; } - (UIView *) createTestView:(CGRect)frame { return nil; } @end TestFactory.h

// // TestFactory.h // AbstractFactory // // Created by 杜甲 on 11/10/14. // Copyright (c) 2014 杜甲. All rights reserved. // #import "TestBrandingFactory.h" @interface TestFactory : TestBrandingFactory @end TestFactory.m

// // TestFactory.m // AbstractFactory // // Created by 杜甲 on 11/10/14. // Copyright (c) 2014 杜甲. All rights reserved. // #import "TestFactory.h" #import "TestView.h" @implementation TestFactory - (UIView *)createTestView:(CGRect)frame { return [[TestView alloc] initWithFrame:frame]; } @end 最后贴出实现

TestBrandingFactory * tmp = [TestBrandingFactory factory]; UIView *v = [tmp createTestView:CGRectMake(50, 110, 100, 50)]; [self.view addSubview:v];

转载于:https://www.cnblogs.com/bhlsheji/p/5368881.html