iOS设计模式 (五) 适配器模式

2018-05-12  本文已影响9人  handsome5
适配器模式
  • iOS中的适配器模式,主要由目标协议,适配者,适配器三部分组成.
适配器模式分类
  • 类适配器: 适配器是继承自适配者的
  • 对象适配器 : 适配器是引用适配者的
适配器模式UML
5.png
适配器模式实例应用
#import <Foundation/Foundation.h>

@interface USD : NSObject

- (float)accepteUSD;

@end
#import "USD.h"

@implementation USD

- (float)accepteUSD
{
    
    return 100;
}

@end
#import <Foundation/Foundation.h>

@protocol AcepptDapter <NSObject>

- (float)dapterUSD;

@end
#import "USD.h"
#import "AcepptDapter.h"

@interface DapaterRMB : USD<AcepptDapter>


@end

#import "DapaterRMB.h"

@implementation DapaterRMB

- (float)dapterUSD
{
    
    return [self accepteUSD] *6.61;
}

@end
#import <UIKit/UIKit.h>

@interface ViewController : UIViewController
@end

#import "ViewController.h"
#import "DapaterRMB.h"

#import "ObjectDapterCNY.h"
#import "USD.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    DapaterRMB *dapterRMB = [[DapaterRMB alloc] init];
    
    float dd =    [dapterRMB dapterUSD];
    
    NSLog(@"ddd ====== :%0.2f",dd);
    
    ObjectDapterCNY *cny = [[ObjectDapterCNY alloc] initWithObject:[USD new]];
   float cc = [cny dapterUSD];
    NSLog(@"cc =====:%0.2f",cc);
   
}

@end
#import <Foundation/Foundation.h>
#import "USD.h"
#import "AcepptDapter.h"

@interface ObjectDapterCNY : NSObject<AcepptDapter>

@property (nonatomic, strong)USD *usdDapter;

- (instancetype)initWithObject:(USD *)dapterUSD;


@end
#import "ObjectDapterCNY.h"

@implementation ObjectDapterCNY

- (instancetype)initWithObject:(USD *)dapterUSD
{
    self = [super init];
    if (self) {
        self.usdDapter = dapterUSD;
    }
    return self;
   
}

- (float)dapterUSD
{
    return [self.usdDapter accepteUSD] *6.61;
}
@end
  • 很简单的入门适配器模式,但是真正的适配器在开发过程中很常用。
  • TableView适配器demo地址:https://github.com/defuliu/DapterPattern.git 觉得不错的话,请打个star.
  • 思考点: 桥接模式跟适配器模式有什么区别呢?
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