UIPageControl with UIView with button

Question

我是Objective-C的新手，需要幫助！

我正在關注可以在網上找到的示例「PageControl」。我在NIB的視圖中添加了一個按鈕，並在下面找到了一個實現的操作。

這裏被顯示在頁面控制我的視圖控制器定義：

 
//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"]]; 

} 

請幫助我理解爲什麼當視圖與initWithString創建，然後通過按鈕操作只對價值訪問列表中的第一個人總是返回。當我使用initWithPageNumber初始化視圖時，s具有正確的值頁面：X.

Answer 1

在InitWithString代碼中，傳遞的是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; 
}

您可能希望將其更改爲NSString，或將NSMutableString ...更改爲NSDictionary的實例。非此即彼。

Answer 2

發現問題出在plist文件中。代碼很好。