iOS前期OC训练OC_02可见度,方法

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// main.m

// OC02_可见度,方法

// Created by dllo on 15/7/16.

#import <Foundation/Foundation.h>

#import "Student.h"

#import "AudiCar.h"

#import "Person.h"

// OC里的枚举

NS_ENUM(NSUInteger, NSSeason){

NSSpring,

NSSummer,

NSAutumn,

NSWinter

};

NS_ENUM(NSUInteger, NSSeason2){

Spring =1 <<0,

Summer =1 <<1,

Autumn =1 <<2,

Winter =1 <<3,

Test =1 <<4

}; // 安位枚举,=后面必须是1

// NSUInteger 无符号正数 NSInteger正负都可以

int main(int argc,constchar * argv[]) {

// 创建一个对象

// Student *stu = [[Student alloc] init];

// [stu sayHi];

// NSLog(@"%@", stu->_stuName);

// stu->_stuAge = 19;

//方法一共分为两种,一种是+号方法,称为类方法,这种方法一般类来进行使用,比如alloc

//第二种是-号方法,称为实例方法,一般对象来调用,比如我们自己写的SayHi,init

//有参数加冒号,无参数就不用加

// [stu setStuName:@"刘珊瑚" stuAge:29 stuSex:@"女" stuScore:0 stuHobby:@"女"];

// [stu sayHi];

// [stu setStuHobby:@"玩"];

// NSLog(@"%@", [stu stuHobby]);

// [stu setStuName:@"商帅"];

// NSLog(@"%@", [stu stuName]);

// AudiCar *car = [[AudiCar alloc] init];

// [car setColor:@"白色" Speed:200 Price:9998];

// [car sayHi];

// [car setColor:@"黑色"];

// NSLog(@"%@",[car color]);

// [car setSpeed:300];

// NSLog(@"%g", [car speed]);

// [car setPrice:998];

// NSLog(@"%g",[car price]);

Student *stu = [[Studentalloc]initWithStuName:@"姓名:商帅"stuAge:68stuScore:0stuHobby:@"不要脸"stuSex:@"女"];

[stusayHi];

AudiCar *car = [[AudiCaralloc]initWithColor:@"红色"Speed:200Price:998];

[carsayHi];

[stusayHi];

// 消息机制

// [消息的接受者具体要做的事]

NSLog(@"%ld",Spring);

NSLog(@"%ld",Summer);

NSLog(@"%ld",Autumn);

NSLog(@"%ld",Winter);

NSLog(@"%ld",Autumn |Winter);// |按位或

return0;

}

// Person.h

// OC02_可见度,方法

// Created by dllo on 15/7/16.

#import <Foundation/Foundation.h>

@interface Person :NSObject

// 特征

{

@public

NSString *_name;

NSString *_sex;

@protected

NSInteger _age;

@private

NSString *_hobby;

}

// 设置器

- (void)setName:(NSString *)name;

// 访问器

- (NSString *)name;

// 赋值语句

- (void)setName:(NSString *)name

Age:(NSInteger)age;

// 自定义的初始化方法

- (id)initWithName:(NSString *)name

age:(NSInteger)age;

@end

// Person.m

// OC02_可见度,方法

// Created by dllo on 15/7/16.

#import "Person.h"

@implementation Person

- (void)setName:(NSString *)name

{

_name = name;

}

// 访问器

- (NSString *)name

{

return_name;

}

// 如果写声明,但是没有实现,会在.m文件中出现警告,告诉我们应该把方法补全

- (void)setName:(NSString *)name

Age:(NSInteger)age

{

_name = name;

_age = age;

}

- (id)initWithName:(NSString *)name

age:(NSInteger)age

{

_name = name;

_age = age;

return self;

}

@end

// B.h

// OC02_可见度,方法

// Created by dllo on 15/7/16.

#import <Foundation/Foundation.h>

@class A;

// 交叉引入头文件

// @class 用@class可以防止交叉引入头文件的问题,系统会把A当成是一个已经存在的类来使用,不会把A.h里的内容进行拷贝,就是用了一下A类的名,其他不做任何的检测

@interface B : NSObject

{

A *_a;

}

@end

// B.m

// OC02_可见度,方法

// Created by dllo on 15/7/16.

#import "B.h"

@implementation B

@end

// A.h

// OC02_可见度,方法

// Created by dllo on 15/7/16.

#import <Foundation/Foundation.h>

#import "B.h"

@interface A : NSObject

{

B *_b;

}

@end

// A.m

// OC02_可见度,方法

// Created by dllo on 15/7/16.

#import "A.h"

@implementation A

@end

// AudiCar.h

// OC02_可见度,方法

// Created by dllo on 15/7/16.

#import <Foundation/Foundation.h>

@interface AudiCar :NSObject

// 三个成员变量,默认可见度

{

NSString *_color;

CGFloat _speed;

CGFloat _price;

}

- (void)sayHi;

// 对三个成员变量进行统一赋值的赋值语句

- (void)setColor:(NSString *)color

Speed:(CGFloat)speed

Price:(CGFloat)price;

// 三个成员变量的设置器

- (void)setColor:(NSString *)color;

- (void)setSpeed:(CGFloat)speed;

- (void)setPrice:(CGFloat)price;

// 访问器

- (NSString *)color;

- (CGFloat)speed;

- (CGFloat)price;

- (id)initWithColor:(NSString *)color

Speed:(CGFloat)speed

Price:(CGFloat)price;

@end

// AudiCar.m

// OC02_可见度,方法

// Created by dllo on 15/7/16.

#import "AudiCar.h"

@implementation AudiCar

// 对三个成员变量进行统一赋值的赋值语句

- (void)setColor:(NSString *)color

Speed:(CGFloat)speed

Price:(CGFloat)price

{

_color = color;

_speed = speed;

_price = price;

}

- (void)sayHi{

NSLog(@"%@, %g, %g",_color,_speed,_price);

}

// 三个成员变量的设置器

- (void)setColor:(NSString *)color{

_color = color;

}

- (void)setSpeed:(CGFloat)speed{

_speed = speed;

}

- (void)setPrice:(CGFloat)price{

_price = price;

}

// 访问器

- (NSString *)color{

return_color;

}

- (CGFloat)speed{

return_speed;

}

- (CGFloat)price{

return_price;

}

- (id)initWithColor:(NSString *)color

Speed:(CGFloat)speed

Price:(CGFloat)price{

_color = color;

_speed = speed;

_price = price;

return self;

}

@end

// Student.h

// OC02_可见度,方法

// Created by dllo on 15/7/16.

#import <Foundation/Foundation.h>

@interface Student :NSObject

// 特征

// 成员变量的可见度

// @public的级别最低,都可以用通过对象->的方式找到成员变量,不安全

// 如果没写可见度,默认是被保护的,被保护的成员变量可以在当前类及其子类来使用@protected

// @private 私有的:只能当前的类可以使用,使用的范围更小

// @package 这个是系统的一些文件来使用,系统来用,如果以后看见了,直接跳过去就行

{

@public

NSString *_stuName;

NSString *_stuSex;

@protected

NSString *_stuHobby;

@private

CGFloat _stuScore;

NSInteger _stuAge;

}

// 行为

- (void)sayHi;

- (void)eat;

- (void)play;

- (id)init;

// 对所有成员变量赋值的语句

// 只要是有参数,就一定要加冒号,冒号的作用相当于标识参数

// 在调用方法的时候我们通过参数形容词知道对应要填的参数,形参名是在方法实现的时候用的

- (void)setStuName:(NSString *)stuName

stuAge:(NSInteger)stuAge

stuSex:(NSString *)stuSex

stuScore:(CGFloat)stuScore

stuHobby:(NSString *)stuHobby;

// 设置器和访问器都是针对一个成员变量进行值的存储和读取,当对多个成员变量进行操作的时候,称为赋值语句

// 设置器 setter

- (void)setStuName:(NSString *)stuName;

- (void)setStuAge:(NSInteger)stuAge;

- (void)setStuSex:(NSString *)stuSex;

- (void)setStuScore:(CGFloat)stuScore;

- (void)setStuHobby:(NSString *)stuHobby;

// 访问器

- (NSString *)stuName;

- (NSInteger)stuAge;

- (NSString *)stuSex;

- (CGFloat)stuScore;

- (NSString *)stuHobby;

// 自定义的初始化方法

// 方法必须以init作为开头,后面跟一个with,W必须大写

- (id)initWithStuName:(NSString *)stuName

stuAge:(NSInteger)stuAge

stuScore:(CGFloat)stuScore

stuHobby:(NSString *)stuHobby

stuSex:(NSString *)stuSex;

@end

// Student.m

// OC02_可见度,方法

// Created by dllo on 15/7/16.

#import "Student.h"

@implementation Student

- (void)sayHi{

NSLog(@"%@, %@, %@, %g, %ld",_stuName,_stuSex,_stuHobby,_stuScore,_stuAge);

}

- (void)eat{

NSLog(@"要吃饭");

}

- (void)play{

NSLog(@"要玩");

}

- (void)setStuName:(NSString *)stuName

stuAge:(NSInteger)stuAge

stuSex:(NSString *)stuSex

stuScore:(CGFloat)stuScore

stuHobby:(NSString *)stuHobby

{

_stuName = stuName;

_stuAge = stuAge;

_stuHobby = stuHobby;

_stuScore = stuScore;

_stuSex = stuSex;

}

- (void)setStuName:(NSString *)stuName{

_stuName = stuName;

}

- (void)setStuAge:(NSInteger)stuAge{

_stuAge = stuAge;

}

- (void)setStuSex:(NSString *)stuSex{

_stuSex = stuSex;

}

- (void)setStuScore:(CGFloat)stuScore{

_stuScore = stuScore;

}

- (void)setStuHobby:(NSString *)stuHobby{

_stuHobby = stuHobby;

}

- (NSString *)stuName{

return_stuName;

}

- (NSInteger)stuAge{

return_stuAge;

}

- (NSString *)stuSex{

return_stuSex;

}

- (CGFloat)stuScore{

return_stuScore;

}

- (NSString *)stuHobby{

return_stuHobby;

}

- (id)init{

_stuAge =20;

_stuHobby = @"男";

_stuName =@"张三";

_stuScore = 75.5;

_stuSex =@"女";

return self;

}

- (id)initWithStuName:(NSString *)stuName

stuAge:(NSInteger)stuAge

stuScore:(CGFloat)stuScore

stuHobby:(NSString *)stuHobby

stuSex:(NSString *)stuSex{

_stuName = stuName;

_stuAge = stuAge;

_stuScore = stuScore;

_stuHobby = stuHobby;

_stuSex = stuSex;

return self;

}

@end

// test.h

// OC02_可见度,方法

// Created by dllo on 15/7/16.

#import "Student.h"

@interface test : Student

- (void)test;

@end

// test.m

// OC02_可见度,方法

// Created by dllo on 15/7/16.

#import "test.h"

@implementation test

- (void)test

{

NSLog(@"%@",_stuName);

}

@end

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