【学习笔记】AB调方法

//

//  AViewController.h

#import <UIKit/UIKit.h>

#import "BViewController.h"

@interface AViewController :UIViewController

-(void)turntoB;//方法全局，用来传

@end

//  AViewController.m

#import "AViewController.h"

#import "BViewController.h"

@interface AViewController ()

@end

@implementation AViewController

- (void)viewDidLoad {

    [superviewDidLoad];

//button，点击方法turntoB，传给B视图的button用

    UIButton*button=[[UIButtonalloc]initWithFrame:CGRectMake(111,111, 111, 111)];

    button.backgroundColor=[UIColorredColor];

    [button addTarget:selfaction:@selector(turntoB)forControlEvents:UIControlEventTouchUpInside];

    [self.viewaddSubview:button];

}

//方法

-(void)turntoB

{

    NSLog(@"22222222"); 

}

@end

//

//  BViewController.h

#import <UIKit/UIKit.h>

#import "AViewController.h"    //用A的方法

@interface BViewController :UIViewController

@end

//

//  BViewController.m

#import "BViewController.h"

@interface BViewController ()

@end

@implementation BViewController

- (void)viewDidLoad {

    [superviewDidLoad];

    

//B的button，方法printB，

    UIButton*button=[[UIButtonalloc]initWithFrame:CGRectMake(111,111, 111, 111)];

    button.backgroundColor=[UIColorredColor];

    [button addTarget:selfaction:@selector(printB)forControlEvents:UIControlEventTouchUpInside];

    [self.viewaddSubview:button];

 

}

//printB调用A视图的turntoB的方法，，，，，关键

-(void)printB

{

    AViewController*view=[[AViewControlleralloc]init];

    [viewturntoB];  

}

@end