iOS笔记 runtime Method Swizzle 方法交换//

//方法交换

- (void)awakeFromNib

{

    Method one =class_getInstanceMethod([selfclass],
NSSelectorFromString(@"viewDidLoad"));

    Method two =class_getInstanceMethod([selfclass],
@selector(customViewDidLoad));

    method_exchangeImplementations(one, two);

    NSLog(@"!");

}

- (void)viewDidLoad {

    [superviewDidLoad];

    NSLog(@"%s",__func__);

    // Do any additional setup after loading the view, typically from a nib.

    

}

- (void)customViewDidLoad{

    NSLog(@"%s",__func__);

    [selfcustomViewDidLoad];

}