main.m文件
- #import <Foundation/Foundation.h>
- #import "Person.h"
- int main(int argc, const char * argv[]) {
- @autoreleasepool {
- // insert code here...
- Person *xw = [Person new];
- [xw needHouse:@"小区房"];
- }
- return 0;
- }
Agent.h
- #import <Foundation/Foundation.h>
-
- @protocol rentHouseDelegate<NSObject>
- - (void) rentHouseDidFinished:(NSString *)result;
- @end
- @interface Agent : NSObject
- @property (nonatomic,assign) id <rentHouseDelegate>delegate;
- - (NSString *)rentHouse;
- @end
Agent.m
- #import "Agent.h"
-
- @implementation Agent
- - (NSString *)rentHouse{
- if (self.delegate != nil) {
- NSString *result = @"房子找到了,为**小区3栋405";
- [self.delegate rentHouseDidFinished:result];
- return result;
- }
- return nil;
- }
- @end
Person.h
- #import <Foundation/Foundation.h>
- #import "Agent.h"
- @interface Person : NSObject<rentHouseDelegate>
- - (void) needHouse:(NSString *)require;
- @end
Person.m
- #import "Person.h"
-
- @implementation Person
- - (void)needHouse:(NSString *)require{
- //1.找到中介(需要导入中介类)
- Agent *agent = [Agent new];
- //2.告诉中介我是谁,(在这里就需要在中介类定义一个属性进行记录)
- agent.delegate = self;
- //3.中介去租房子,(在这里需要在中介类里面定义一个租房子的方法)
- [agent rentHouse];
- }
- - (void)rentHouseDidFinished:(NSString *)result{
- NSLog(@"%@",result);
- }
- @end