Question

我在不使用委托协议的情况下呈现modalviewcontroller。但是想要使用委托协议来解雇modalviewcontroller。

基本上我正在推动像这样的modalviewcontroller

- (void)displayModalViewaction: (id) sender 
 {
self.view = [[UIView alloc] initWithFrame:[[UIScreen mainScreen] bounds]];

self.viewController = [[Infoviewcontroller alloc] init];

[self.view setFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];


UINavigationController *navigationController=[[UINavigationController alloc] init];

navigationController.navigationBar.tintColor = [UIColor brownColor]; 

[navigationController pushViewController:_viewController animated:YES];

[self.view addSubview:navigationController.view];

[_viewController release];

[navigationController release];

}

解雇执行此操作的modalview

在ModalViewController.h委托的协议和方法

 @protocol ModalViewDelegate <NSObject>

 -(void) dismissModalView:(UIViewController *) viewController;

 @end

 @interface Infoviewcontroller : UIViewController <ModalViewDelegate>

 {
    id<ModalViewDelegate> dismissDelegate;
  }

@property (nonatomic, retain) id<ModalViewDelegate> dismissDelegate;

@end

在modalviewcontroller中。 m档

@synthesize dismissDelegate;

-(void) dismissModalView:(UIViewController *) viewController;
{

   [self dismissModalViewControllerAnimated:YES];

 }
  @end

   -(void) dismissView: (id)sender

  {
    [delegate dismissModalView:self];

 }

 -(void) dismissModalView:(UIViewController *) viewController;
{

 [self.dismissModalViewController Animated:YES];

}

@end

但是点击完成按钮

时，它无法正常工作

 UIButton* backButton = [UIButton buttonWithType:101]; 
  [backButton addTarget:self action:@selector(dismissView:)   forControlEvents:UIControlEventTouchUpInside];
  [backButton setTitle:@"Done" forState:UIControlStateNormal];

// create button item
UIBarButtonItem* backItem = [[UIBarButtonItem alloc] initWithCustomView:backButton];

// add the button to navigation bar
self.navigationItem.leftBarButtonItem = backItem;
[backItem release];

任何人都有任何线索，我的代码中缺少什么或我做错了什么。帮助将非常感激。

由于

Answer 1

如果我错了，请纠正我，但是你不想在你的.h文件中定义_viewController并用[delegate dismissModalView:_viewController];解雇它而不是解雇self，因为self不是一个视图控制器。

Answer 2

我本来想评论，但没有足够的特权。无论如何AFAIK ......

一个人不会“推”一个模态VC ......它需要像这样'呈现'..

[navigationController presentModalViewController:_viewController animated:YES];

在调用[self dismissModalViewControllerAnimated:YES];

时，只有呈现的Modal VC才会被解雇

或者，如果你真的需要'推'它...那么你需要'弹出'才能回来！

希望有所帮助

Answer 3

您正在推进导航的堆栈，因此没有显示任何模态，您需要将视图从堆栈中弹出：

[self.navigationController popViewControllerAnimated:YES];

而不是：

[self dismissModalViewControllerAnimated:YES];

解雇modalview不起作用

3 个答案: