UIPageControl with UIView with button

Question

我是Objective-C的新手，需要帮助！

我正在关注可以在网上找到的示例“PageControl”。我在NIB的视图中添加了一个按钮，并在下面找到了一个实现的操作。

这里被显示在页面控制我的视图控制器定义：

 
//ContactCardViewController.h 
@interface ContactCardViewController : UIViewController 
{ 
    int pageNumber; 
    NSMutableString *s; 
} 


//ContactCardViewController.m implementation 

- (id)initWithPageNumber:(int)page { 
    if (self = [super initWithNibName:@"ContactCardViewController" bundle:nil]) { 
     s = [[NSString alloc] initWithFormat:@"page: %d", page];    
    } 
    return self; 
} 


- (id)initWithString:(NSDictionary *)_s { 
    if (self = [super initWithNibName:@"ContactCardViewController" bundle:nil]) { 
     NSMutableString *t = [[NSMutableString alloc] initWithString:_s]; 
     s = t; 
    } 
    return self; 
} 


-(IBAction)callOrAddToContacts:(id)sender 
{ 
    jobtitleLabel.text = s; 
} 


//AppDelegate.m 
//in delegate that loads the scroll view with the view for the current page: 

- (void)loadScrollViewWithPage:(int)page { 
//init the view this way the page: and the correct page number is displayed 
    controller = [[ContactCardViewController alloc] initWithPageNumber:page ]; 

//init the view this way, the value of the first person is always displayed 
    controller = [[ContactCardViewController alloc] initWithString:[[self.allNames objectAtIndex:page] objectForKey:@"firstname"]]; 

} 

请帮助我理解为什么当视图与initWithString创建，然后通过按钮操作只对价值访问列表中的第一个人总是返回。当我使用initWithPageNumber初始化视图时，s具有正确的值页面：X.

Answer 1

在InitWithString代码中，传递的是Dictionary，而不是字符串。

- (id)initWithString:(NSDictionary *)_s { 
    if (self = [super initWithNibName:@"ContactCardViewController" bundle:nil]) { 
     NSMutableString *t = [[NSMutableString alloc] initWithString:_s]; 
     s = t; 
    } 
    return self; 
}

您可能希望将其更改为NSString，或将NSMutableString ...更改为NSDictionary的实例。非此即彼。

Answer 2

发现问题出在plist文件中。代码很好。