嗯，越來越：可能不迴應 '-presentModalViewController：動畫：'

Question

我真的得到這個惱人的警告：

警告：

'的AppDelegate' 可能不 '：動畫-presentModalViewController' 迴應

在此實現文件：

- (IBAction)showInfo:(id)sender {  

    FlipsideViewController *controller = [[FlipsideViewController alloc] initWithNibName:@"FlipsideView" bundle:nil]; 
    controller.delegate = self; 

    controller.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal; 
    [self presentModalViewController:controller animated:YES]; 

    [controller release]; 
} 

在該行：

自我存在ModalViewController：controller animated：YES];

，這裏是頭文件：

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

@interface AppDelegate : NSObject <UIApplicationDelegate, UIScrollViewDelegate, FlipsideViewControllerDelegate> { 
    UIWindow *window; 
    UIScrollView *scrollView; 
    UIPageControl *pageControl; 
    NSMutableArray *viewControllers; 
    UIView *flipside; 
    UIImageView *infoButton; 

    // To be used when scrolls originate from the UIPageControl 
    BOOL pageControlUsed; 
} 

@property (nonatomic, retain) IBOutlet UIWindow *window; 
@property (nonatomic, retain) IBOutlet UIScrollView *scrollView; 
@property (nonatomic, retain) IBOutlet UIPageControl *pageControl; 
@property (nonatomic, retain) IBOutlet UIView *flipside; 
@property (nonatomic, retain) IBOutlet UIImageView *infoButton; 
@property (nonatomic, retain) NSMutableArray *viewControllers; 

- (IBAction)showInfo:(id)sender; 
- (IBAction)changePage:(id)sender; 

@end 

顯然有一些東西我真的沒有得到，但我會很感激，如果有人可以幫助:)

Answer 1

從您必須persent模式視圖控制器UIViewController的一個實例（不是你的應用程序委託）。如果您查看UIViewController上的documentation，則可以使用模態演示文稿訪問示例應用程序。