iOS NSInvalidArgumentException : Unrecognized selector sent to instance

Question

我正在尝试遵循此示例中的代码:iOS 6: How do I restrict some views to portrait and allow others to rotate?

我创建了一个名为 customNavigationController 的 UINavigationController 子类:

customNavigationController.m

@implementation CustomNavigationController
- (BOOL)shouldAutorotate
{
    return YES;
}

- (NSUInteger)supportedInterfaceOrientations
{
    if (self.landscapeOK) {
        NSLog(@"all orientation ok");
        return UIInterfaceOrientationMaskAllButUpsideDown;
    }
    NSLog(@"only portrait orientation");
    return UIInterfaceOrientationMaskPortrait;
}

@end

CustomNavigationController.h

@interface CustomNavigationController : UINavigationController

@property (nonatomic) BOOL landscapeOK;

@end

然后在我的应用中，我尝试在 viewWillAppear 中设置 landscapeOK 属性:

-(void)viewWillAppear:(BOOL)animated{
    [super viewWillAppear:YES];
    [(CustomNavigationController*)[self navigationController] setLandscapeOK:NO];
}

当我运行 [(CustomNavigationController*)[self navigationController] setLandscapeOK:NO]; 我得到错误

*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[UINavigationController setLandscapeOK:]: unrecognized selector sent to instance 0x10091ee00'

我做错了什么？

Answer 1

您必须在 Storyboard中的导航 Controller 的身份检查器中将自定义类设置为 CustomNavigationController。