iOS-强制横屏大总结

ゝ一世哀愁。 2023-10-18 10:38 69阅读 0赞

#### 整个项目是竖屏的，不能横屏，但是有个播放界面必须要横屏于是就开始找各种横屏的方法，最后在手机上好使了，但是在pad上横屏启动的时候界面是横屏显示，很是苦恼，就又开始了漫长的找资料，直接上代码 ####

#### 1、配置plist文件和deployemnt Info -> device orientation ####

（1）plist文件，如图所示，第一项是建立项目时默认有的表示支持手机的屏幕方向（我把支持向右和向左的删了），第二项是后加的表示支持ipad（添加 Supported interface orientations (iPad)）的旋转方向（同样我把向左向右，向上的给删了）

![这里写图片描述][SouthEast]

（2）deployemnt Info -> device orientation，只选择第一项竖屏。

![这里写图片描述][SouthEast 1]

#### 2、开始代码配置（主要讲解push界面的强制横屏）主要是借鉴简书[http://www.jianshu.com/p/5c773628caa6][http_www.jianshu.com_p_5c773628caa6]这位大神的讲解 ####

（1）AppDelegate.h里面

@property (assign , nonatomic) BOOL isForceLandscape;
    @property (assign , nonatomic) BOOL isForcePortrait;

AppDelegate.m里面

-(UIInterfaceOrientationMask)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window{
        if (self.isForceLandscape) {
    
            return UIInterfaceOrientationMaskLandscape;
        }else if (self.isForcePortrait){
    
            return UIInterfaceOrientationMaskPortrait;
        }
    
        return UIInterfaceOrientationMaskPortrait;
    }

(2)，在相应的tabBarController里面（我是在viewController里面写的）

#import <UIKit/UIKit.h>
    #import "BaseViewController.h"
    
    @interface RootViewController : BaseViewController
    
    @property (strong,nonatomic) UITabBarController *tabBarCon;
    @end

/// 选择的当前控制器是否可以旋转
    -(BOOL)shouldAutorotate{
    
        return [self.tabBarCon.selectedViewController shouldAutorotate];
    }
    
    /// 选择的当前控制器是支持的旋转的方向
    - (UIInterfaceOrientationMask)supportedInterfaceOrientations{
    
        return  [self.tabBarCon.selectedViewController supportedInterfaceOrientations];
    }
    
    ///
    - (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation{
    
        return  [self.tabBarCon.selectedViewController preferredInterfaceOrientationForPresentation];
    }

(3）,在navigationController里面（自己创建的navigationController的子类）

#import <UIKit/UIKit.h>
    
    @interface RootNavigationController : UINavigationController
    
    //旋转方向 默认竖屏
    @property (nonatomic , assign) UIInterfaceOrientation interfaceOrientation;
    @property (nonatomic , assign) UIInterfaceOrientationMask interfaceOrientationMask;

/// 当前的导航控制器是否可以旋转
    -(BOOL)shouldAutorotate{
    
        return YES;
    }
    
    //设置支持的屏幕旋转方向
    - (UIInterfaceOrientationMask)supportedInterfaceOrientations {
    
        return self.interfaceOrientationMask;
    }
    
    //设置presentation方式展示的屏幕方向
    - (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation {
    
        return self.interfaceOrientation;
    }

（4）在父类viewController里面

- (void)viewDidLoad {
        [super viewDidLoad];
    
        // 表示本类支持旋转
        [UIViewController attemptRotationToDeviceOrientation];
    }

（5），在需要强制横屏的地方调用

- (void)viewWillAppear:(BOOL)animated{
    
        self.navigationController.navigationBar.hidden = YES;
        self.navigationController.tabBarController.tabBar.hidden = YES;
    
        // 强制横屏
        [self forceOrientationLandscape];
    
        RootNavigationController *nav = (RootNavigationController *)self.navigationController;
        nav.interfaceOrientation = UIInterfaceOrientationLandscapeRight;
        nav.interfaceOrientationMask = UIInterfaceOrientationMaskLandscapeRight;
    
        //强制翻转屏幕，Home键在右边。
        [[UIDevice currentDevice] setValue:@(UIInterfaceOrientationLandscapeRight) forKey:@"orientation"];
        //刷新
        [UIViewController attemptRotationToDeviceOrientation];
    }
    
    - (void)viewWillDisappear:(BOOL)animated{
    
        //强制旋转竖屏
        [self forceOrientationPortrait];
        RootNavigationController *navi = (RootNavigationController *)self.navigationController;
        navi.interfaceOrientation = UIInterfaceOrientationPortrait;
        navi.interfaceOrientationMask = UIInterfaceOrientationMaskPortrait;
    
        //设置屏幕的转向为竖屏
        [[UIDevice currentDevice] setValue:@(UIDeviceOrientationPortrait) forKey:@"orientation"];
        //刷新
        [UIViewController attemptRotationToDeviceOrientation];
    }

#pragma  mark 横屏设置
    //强制横屏
    - (void)forceOrientationLandscape{
    
        AppDelegate *appdelegate=(AppDelegate *)[UIApplication sharedApplication].delegate;
        appdelegate.isForceLandscape=YES;
        appdelegate.isForcePortrait=NO;
        [appdelegate application:[UIApplication sharedApplication] supportedInterfaceOrientationsForWindow:self.view.window];
    }
    
    //强制竖屏
    - (void)forceOrientationPortrait{
    
        AppDelegate *appdelegate=(AppDelegate *)[UIApplication sharedApplication].delegate;
        appdelegate.isForcePortrait=YES;
        appdelegate.isForceLandscape=NO;
        [appdelegate application:[UIApplication sharedApplication] supportedInterfaceOrientationsForWindow:self.view.window];
    }

*  总结，感觉[http://www.jianshu.com/p/5c773628caa6][http_www.jianshu.com_p_5c773628caa6]这位大神已经总结的很到位了，希望可以帮到需要的人

[SouthEast]: https://img-blog.csdn.net/20170401115028860?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvaGFoYV9oZWxsbw==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/SouthEast
[SouthEast 1]: https://img-blog.csdn.net/20170401115428232?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvaGFoYV9oZWxsbw==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/SouthEast
[http_www.jianshu.com_p_5c773628caa6]: http://www.jianshu.com/p/5c773628caa6