uinavigationcontroller – shouldAutorotate,supportedInterfaceOrientations和preferredInterfaceOrientati

2020年02月04日作者：佚名

我在尝试阻止某些视图中的方向时遇到问题,但代码不是工作属性.

我在每个视图中使用这些行：

- (BOOL)shouldAutorotate
{
    return YES;
}

- (NSUInteger)supportedInterfaceOrientations
{
    if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
        return UIInterfaceOrientationMaskPortrait;
    } else {
        return UIInterfaceOrientationMaskAll;
    }
}

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
    return UIInterfaceOrientationPortrait;
}

它几乎可以在使用UINavigationController的视图中工作,但是在使用UITabBarController的视图中我遇到了很大的问题,因为它接缝代码没有被调用.

解决方法

好吧我解决了,你必须继承UINavigationController和UITabBarController,所以这里是代码：

//cCustomNavigationController.h file

#import <UIKit/UIKit.h>

@interface cCustomNavigationController : UINavigationController <UINavigationControllerDelegate>

@end

//cCustomNavigationController.m file

#import "cCustomNavigationController.h"

@interface cCustomNavigationController ()

@end

@implementation cCustomNavigationController 

- (BOOL)shouldAutorotate {
    return [self.visibleViewController shouldAutorotate];
}

- (NSUInteger)supportedInterfaceOrientations {
    return [self.visibleViewController supportedInterfaceOrientations];
}

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation {
    return [self.visibleViewController preferredInterfaceOrientationForPresentation];
}

@end

//cCustomTabController.h file

#import <UIKit/UIKit.h>

@interface cCustomTabController : UITabBarController <UITabBarControllerDelegate>

@end

//cCustomTabController.m file

#import "cCustomTabController.h"

@interface cCustomTabController  ()

@end

@implementation cCustomTabController

- (BOOL)shouldAutorotate {
    return [self.selectedViewController shouldAutorotate];
}

- (NSUInteger)supportedInterfaceOrientations {
    return [self.selectedViewController supportedInterfaceOrientations];
}

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation {
    return [self.selectedViewController preferredInterfaceOrientationForPresentation];
}

@end

现在你只需要在你需要它的地方创建你的TabBarController或者你的NavigationController,即

//For the UINavigationController
UINavigationController *navigationController = [[cCustomNavigationController alloc] init];

//For the UITabBarController
UITabBarController *tabController = [[cCustomTabController alloc] init];

我希望这能帮到你们.

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