iOS開發實用技巧—super、superClass、class的區別

class:獲取方法調用類名

superclass:獲取方法調用者的父類類名

super:編譯修飾符,不是指針,指向父類標志,

本質還是拿到當前對象去調用父類的方法

注意:super並不是拿到父類對象去調用父類方法

 

#import <Foundation/Foundation.h>
@interface Person : NSObject
- (void)test;
@end
 
#import "Person.h"
@implementation Person
- (void)test
{
    // self:SonPerson
    // 輸出結果 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
{
    // 輸出結果：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

輸出結果：SonPerson Person SonPerson