iOS开发实用技巧—super、superClass、class的区别

class:获取方法调用类名

superclass:获取方法调用者的父类类名

super:编译修饰符,不是指针,指向父类标志,

本质还是拿到当前对象去调用父类的方法

注意:super并不是拿到父类对象去调用父类方法

 

#import <Foundation/Foundation.h>
@interface Person : NSObject
- (void)test;
@end
 
#import "Person.h"
@implementation Person
- (void)test
{
    // self:SonPerson
    // 输出结果 SonPerson Person self:SonPerson
     NSLog(@"%@ %@ %@",[self class],[self superclass],[super class]);
}
@end
 
#import "Person.h"

@interface SonPerson : Person
@end
 
#import "SonPerson.h"

@implementation SonPerson
- (void)test
{
    // 输出结果：SonPerson Person SonPerson
//    NSLog(@"%@ %@ %@",[self class],[self superclass],[super class]);
    [super test];
}
 
#import "ViewController.h"

#import "SonPerson.h"

@interface ViewController ()

@end
 
 
#import <UIKit/UIKit.h>
@interface ViewController : UIViewController
@end
 
@implementation ViewController
- (void)viewDidLoad {
    [super viewDidLoad];
    SonPerson *son = [[SonPerson alloc] init];
    [son test];
}
@end

输出结果：SonPerson Person SonPerson