Abstract Factory of iOS Design Patterns

Abstract Factory of iOS Design Patterns

Design Patterns are essential to program improvement. Here we will talk about how iOS implements the abstract factory design patterns. This article is written after reading the abstract factory chapter of oc programming. If you do not understand the principles, you can look at that book.

TestView. h first creates a view

//// TestView. h // AbstractFactory /// Created by du jia on 11/10/14. // Copyright (c) 2014 du jia. all rights reserved. // # import
 
  
@ Interface TestView: UIView @ end
 

TestView. m

//// TestView. m // AbstractFactory /// Created by du jia on 11/10/14. // Copyright (c) 2014 du jia. all rights reserved. // # import "TestView. h "@ implementation TestView-(id) initWithFrame :( CGRect) frame {if (self = [super initWithFrame: frame]) {self. backgroundColor = [UIColor redColor];} return self ;}@ end

Next, we will create two classes: TestFactory and TestBrandingFactory. TestFactory inherits TestBrandingFactory. The specific implementation is as follows:

TestBrandingFactory. h

//// TestBrandingFactory. h // AbstractFactory /// Created by du jia on 11/10/14. // Copyright (c) 2014 du jia. all rights reserved. // # import
 
  
# Import
  
   
@ Interface TestBrandingFactory: NSObject + (TestBrandingFactory *) factory;-(UIView *) createTestView :( CGRect) frame; @ end
  
 

TestBrandingFactory. m

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

TestFactory. m

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

Finally, paste the implementation

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