iOS 委托模式(2)

p>  

p>-(void)willBuy;  

p>  

p>@end  

p> 

p>#import <Foundation/Foundation.h>

p> 

p>@protocol MyDelegate <NSObject>

p> 

p>-(void)buyIphone:(NSString*)iphoneType;

p> 

p>@end

p> 

p>@interface Customer : NSObject

p> 

p>@property(nonatomic,assign)id<MyDelegate> delegate;

p> 

p>-(void)willBuy;

p> 

p>@end

p>Customer.m

p> 

p> 

p> 

p>[cpp] 

p>#import "Customer.h"   

p>  

p>@implementation Customer  

p>  

p>@synthesize delegate;  

p>  

p>-(void)willBuy {  

p>    [delegate buyIphone:@"Iphone5"];  

p>}  

p>  

p>@end  

p> 

p>#import "Customer.h"

p> 

p>@implementation Customer

p> 

p>@synthesize delegate;

p> 

p>-(void)willBuy {

p>    [delegate buyIphone:@"Iphone5"];

p>}

p> 

p>@end

p>Businessman.h

p> 

p> 

p>[cpp] 

p>#import <Foundation/Foundation.h>   

p>#import "Customer.h"   

p>  

p>@interface Businessman : NSObject<MyDelegate>  

p>  

p>@end  

p> 

p>#import <Foundation/Foundation.h>

p>#import "Customer.h"

p> 

p>@interface Businessman : NSObject<MyDelegate>

p> 

p>@end

p>Businessman.m

p> 

p> 

p>[cpp] 

p>#import "Businessman.h"   

p>  

p>@implementation Businessman  

p>  

p>-(void)buyIphone:(NSString *)iphoneType {  

p>    NSLog(@"There is an Iphone store,we have %@",iphoneType);  

p>}  

p>  

p>  

p>@end  

p> 

p>#import "Businessman.h"

p> 

p>@implementation Businessman

p> 

p>-(void)buyIphone:(NSString *)iphoneType {

p>    NSLog(@"There is an Iphone store,we have %@",iphoneType);

p>}

p> 

p> 

p>@end

p>main.m

p> 

p> 

p>[cpp] 

p>#import <Foundation/Foundation.h>   

p>  

p>#import "Customer.h"   

p>#import "Businessman.h"   

p>  

p>int main(int argc, const char * argv[])  

p>{  

p>  

p>    @autoreleasepool {  

p>          

p>        // insert code here...   

p>        Customer *customer = [[Customer alloc]init];          

p>        Businessman *businessman = [[Businessman alloc]init];  

p>        customer.delegate = businessman;