可可的经典MVC

时间:2013-05-23 19:34:42

标签: ios objective-c model-view-controller

我正在尝试从控制器中构造一些视图代码(显然没有使用nib)。因此,我尝试了一个简单的例子,但由于某种原因,我无法将目标添加到控制器中的按钮,其余的很好。这是我正在尝试的:

或者Controller.h:

#import <UIKit/UIKit.h>
#import "IndexView.h"

@interface IndexController : UIViewController
{

}

@property (nonatomic) IndexView *contentView;

@end

Controller.m或者

#import "IndexController.h"
#import "IndexView.h"

@interface IndexController ()

@end

@implementation IndexController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {

        self.contentView = [[IndexView alloc]init];
        [self.view addSubview:self.contentView];

        [self connectUIElements];
    }
    return self;
}

- (void) connectUIElements
{
    [self.contentView.testButton addTarget:self action:@selector(testButtonClicked) forControlEvents:UIControlEventTouchUpInside];
}

#pragma mark --
#pragma mark UIHandler
- (void) testButtonClicked
{
    NSLog(@"testbutton clicked");
}

@end

View.h

#import <UIKit/UIKit.h>

@interface IndexView : UIView

@property (nonatomic, strong) UIButton *testButton;

@end

View.m

#import "IndexView.h"

@implementation IndexView

- (id)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {

        [self setUpView];
    }
    return self;
}

- (id) init
{
    self = [super init];
    if (self) {

        [self setUpView];
    }
    return self;
}

- (void) setUpView
{
    [self setBackgroundColor:[UIColor whiteColor]];

    self.testButton = [[UIButton alloc]initWithFrame:CGRectMake(10, 50, 100, 50)];
    self.testButton.backgroundColor = [UIColor greenColor];
    [self.testButton setTitle:@"hello, world" forState:UIControlStateNormal];
    [self addSubview:self.testButton];
}

@end

我正在探索更接近经典MVC模式的可能性,以及距苹果中介解释更远的地方。知道什么是错的吗?

1 个答案:

答案 0 :(得分:0)

您必须使用initWithFrame:创建视图,UIViewinit的默认初始值设定项。 (原因不适用于简单的{{1}} - 但我猜这里! - 可能是视图大小为零,因此触摸事件不起作用。)