Question

我正在开发一个应用程序，其中我有一个Navigation Controller，其中少数ViewController作为孩子。现在很少ViewController我希望保持纵向模式的方向。如何我这样做？

修改

我创建了自定义视图控制器类PortraitViewController＆amp;在PortraitViewController.m

中添加以下代码

@interface PortraitViewController ()

@end

@implementation PortraitViewController

- (BOOL)shouldAutorotate
{

    return YES;
}

- (NSUInteger)supportedInterfaceOrientations
{
    //Here check class name and then return type of orientation
    return UIInterfaceOrientationMaskPortrait;
}

@end

之后我实现了PortraitViewController.h作为基类

#import <UIKit/UIKit.h>
#import "PortraitViewController.h"
@interface Login : PortraitViewController
@end

但是，如果将设备旋转到横向模式，仍然可以正常工作。

Answer 1

创建自定义类＆＃34; PortraitViewController＆＃34;。并编写此代码。

@interface PortraitViewController ()

@end

@implementation PortraitViewController

- (BOOL)shouldAutorotate
{

    return YES;
}

- (NSUInteger)supportedInterfaceOrientations
{
    //Here check class name and then return type of orientation
    return UIInterfaceOrientationMaskPortrait;
}

@end

将此类指定为viewcontroller的基类，您可以为UINavigationController做同样的事情

Answer 2

创建自定义NavController并将其作为超级类添加到视图控制器中。

#import "PotraitNAVController.h"

@interface PotraitNAVController ()

@end

@implementation PotraitNAVController

//implement this methods in your viewcontroller also, this will tell navigation controller to allow which type of rotation is allowed.
- (BOOL)shouldAutorotate
{

    //Here check topviewcontroller and allow rotation to no if you want it in potrait
    return self.topViewController.shouldAutorotate;
}

- (NSUInteger)supportedInterfaceOrientations
{
    return self.topViewController.supportedInterfaceOrientations;
}
@end

如何仅在纵向模式下修复少数控制器的方向？

2 个答案: