iOS应用设计模式开发中对简单工厂和工厂方法模式的运用

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#import "Operation.h"

 

@interface OperationMul :Operation
@end
OperationMul类实现

#import "OperationMul.h"

@implementation OperationMul
-(double)GetResult{
    double result =0;
    result = numberA*numberB;
    return result;
}
@end

OperationSub类接口
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#import "Operation.h"

 

@interface OperationSub :Operation
@end

OperationSub类实现
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#import "OperationSub.h"

 

@implementation OperationSub
-(double)GetResult{
    double result =0;
    result = numberA-numberB;
    return result;
}
@end

IFactory类接口
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#import <Foundation/Foundation.h>

 

#import "Operation.h"
@interface IFactory :NSObject
-(Operation*)CreateOperation;
@end

IFactory类实现
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#import "IFactory.h"

 

@implementation IFactory
-(Operation*)CreateOperation{
    return [[Operation alloc]init];
}
@end

AddFactory类接口
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#import "IFactory.h"