UIAlertView clickedButtonAtIndex with presentModalViewController

Question

我想从UIAlertView按钮调用一个通过presentModalViewController的视图。代码如下，NSlog显示在控制台中，所以我知道代码执行确实达到了这一点。此外，没有错误或任何显示：

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex { 

if (buttonIndex != [alertView cancelButtonIndex]) 
{ 
    NSLog(@" The username is: %@ AND the password is: %@ ",textField.text,passTextField.text); 

// do some logic in here later 

    CompanyViewController *companyViewController = [[[CompanyViewController alloc] initWithNibName:@"CompanyViewController" bundle:nil] autorelease]; 
    [self presentModalViewController:companyViewController animated:YES]; 
} 
[textField resignFirstResponder]; 
[passTextField resignFirstResponder]; 

} 

*****编辑：上面的方法属于一个UIViewController。以下是接口文件：

@interface testingViewController : UIViewController <UITextFieldDelegate> 
{ 
UITextField *textField; 
UITextField *passTextField; 
} 
@property (nonatomic, retain) UITextField *textField; 
@property (nonatomic, retain) UITextField *passTextField; 
@property (readonly) NSString *enteredText; 
@property (readonly) NSString *enteredPassword; 

@end 

任何帮助表示赞赏。

Answer 1

这可能是你正在尝试从不是viewController的东西调用presentModalViewController？例如一个视图。

Answer 2

刚刚尝试使用带有导航控制器不同的东西：

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex { 

    if (buttonIndex != [alertView cancelButtonIndex]) 
    { 

     CompanyViewController *companyViewController = [[CompanyViewController alloc] init]; 
     UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:companyViewController]; 

     [self.navigationController presentModalViewController:navController animated:YES]; 
     [navController release]; 
    } 

} 

希望将工作..