Question

您好我正在尝试David Mark et.al编写的iOS 6编程手册，我正在研究Autorotation和Autosizing部分。

如果any1可以帮我修复这个不断出现的恼人错误，我将不胜感激：

以下代码位于.m文件中：

#import "BIDViewController.h"

#define degreesToradians(x) (M_PI * (x) / 180.0)

@interface BIDViewController ()

@end

@implementation BIDViewController

- (void)willAnimateRotationToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation duration:(NSTimeInterval)duration {
    if (interfaceOrientation == UIInterfaceOrientationPortrait) {
        self.view = self.portrait;
        self.view.transform = CGAffineTransformIdentity;
        self.view.transform =
        CGAffineTransformMakeRotation(degreesToradians(0));
        self.view.bounds = CGRectMake(0.0,0.0,320.0,460.0);
    }
    else if (interfaceOrientation == UIInterfaceOrientationLandscapeLeft) {
        self.view = self.landscape;
        self.view.transform = CGAffineTransformIdentity;
        self.view.transform =
        CGAffineTransformMakeRotation(degreesToradians(-90));
        self.view.bounds = CGRectMake(0.0,0.0,480.0,300.0);
    }
    else if (interfaceOrientation ==
        UIInterfaceOrientationLandscapeRight) {
            self.view = self.landscape;
            self.view.transform = CGAffineTransformIdentity;
            self.view.transform =
            CGAffineTransformMakeRotation(degreesToradians(90));
            self.view.bounds = CGRectMake(0.0,0.0,480.0,300.0);
        }
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (IBAction)buttonPressed:(id)sender {
    NSString *message = nil;

    if ([self.foos containsObject:sender])
        message = @"Foo Button Pressed";
    else
        message = @"Bar Button Pressed";

    **UIAlertView *alert = [[UIAlertView alloc] initwithtitle:message**
                                                    message:nil
                                                   delegate:nil
                                          cancelButtonTitle:@"Ok"
                                          otherButtonTitles:nil];
    [alert show];
}
@end

弹出的错误是“UIAlertView没有可见的@interface”......

我尝试找到关于“标题”的拼写错误，但错误仍然存在......这是针对iOS的！

任何帮助？

谢谢

Answer 1

initwithtitle: ...应为initWithTitle: ...请在发布此类问题之前彻底检查您的工作。发布完整错误也会更有帮助。

UIAlertView错误没有可见的@interface

1 个答案: