Objective c UIView中的UIButton未响应

单击视图中的UIButton时，它没有响应。某个数字 我做错了什么？这是我的全部代码：

    MyView.h

   @interface Myview : UIView

    @end

MyView.m

#import "MyView.h"

    - (init){
       self = [super init];
       if(self)
           [self createButton];
       return self;
    }

    - (void) createButton{
      UIButton *button = [[UIButton alloc]   initWithFrame:CGRectMake(100,100,100,50)];
       [button setTitle:@"Go" forState:UIControlStateNormal];
    [button addTarget:self
                     `action:@selector(goAction)
           forControlEvents:UIControlEventTouchUpInside];
       [self addSubview:button];
    }

    - (void) goAction{
       NSString *test = @"Some text";
    }

MyViewController.m

 - (id) init{
        self = [super init];
        if (self) {
            MyView *myview = [[MyView alloc] init];
            [self.view addSubview:myview];
        }
        return self;
    }`

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
}

#import "ViewController.h"
#import "MyViewController.h"

@interface ViewController ()

@end

@implementation ViewController


- (void)viewDidLoad {
    [super viewDidLoad];

    MyViewController *myTestView = [[MyViewController alloc] init];
   [self.view addSubview:myTestView.view];
}


- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}


@end

ViewController.m

 - (id) init{
        self = [super init];
        if (self) {
            MyView *myview = [[MyView alloc] init];
            [self.view addSubview:myview];
        }
        return self;
    }`

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
}

#import "ViewController.h"
#import "MyViewController.h"

@interface ViewController ()

@end

@implementation ViewController


- (void)viewDidLoad {
    [super viewDidLoad];

    MyViewController *myTestView = [[MyViewController alloc] init];
   [self.view addSubview:myTestView.view];
}


- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}


@end

---

单击不起作用的原因是您没有设置

MyView的
frame
这样就可以了（尽管我仍然不明白为什么需要将一个ViewController添加到另一个ViewController中）

内联
对象C
，为什么要以编程方式创建另一个
UIViewController
（MyViewController）？为什么不直接在ViewController.m中添加
MyView
？直接将MyView添加到ViewController不会有问题。但我不明白为什么在我将MyViewController添加到ViewController时它不起作用！如果将MyView直接添加到ViewController中，是否有效？是的。它很好用。