转屏

添加观察者

[[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications];
        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(deviceOrientationDidChange) name:UIDeviceOrientationDidChangeNotification object:nil];


#pragma mark ––––––––––––––––– 监测横竖屏切换
#pragma mark ––––––––––––––––– 监测横竖屏切换
- (void)deviceOrientationDidChange
{
    NSLog(@"deviceOrientationDidChange:%ld",(long)[UIDevice currentDevice].orientation);
    //1.获取 当前设备 实例
        UIDevice *device = [UIDevice currentDevice];
        /**
         device.orientation
         UIDeviceOrientationUnknown,             //系統無法判斷目前Device的方向，有可能是斜置
         UIDeviceOrientationPortrait,            // 屏幕直立，home键朝下
         UIDeviceOrientationPortraitUpsideDown,  // 屏幕直立，上下顛倒，home键在上
         UIDeviceOrientationLandscapeLeft,       // 屏幕向左横置，home键在右
         UIDeviceOrientationLandscapeRight,      // 屏幕向右横置，home键在左
         UIDeviceOrientationFaceUp,              // 屏幕朝上平躺
         UIDeviceOrientationFaceDown             // 屏幕朝下平躺
         */
//    NSLog(@"deviceOrientationDidChange============ %ld",(long)[UIDevice currentDevice].orientation);
    if(device.orientation == UIDeviceOrientationUnknown || device.orientation == UIDeviceOrientationPortrait){//竖屏
        [self updateVerticalSubviews];//更新竖屏UI
    }else if(device.orientation == UIDeviceOrientationFaceUp || device.orientation == UIDeviceOrientationFaceDown){//屏幕朝上-屏幕朝下

    }else{//横屏
        [self updateHorizontalSubviews];//更新横屏样式
    }
}

移除观察者

        [[UIDevice currentDevice]endGeneratingDeviceOrientationNotifications];
        [[NSNotificationCenter defaultCenter] removeObserver:self
                                                           name:UIDeviceOrientationDidChangeNotification
                                                      object:nil];

改变方向

- (void)setDeviceOrientation:(BOOL)isHorizontal{
    /**
     typedef NS_OPTIONS(NSUInteger, UIInterfaceOrientationMask) {
         UIInterfaceOrientationMaskPortrait // 设备(屏幕)直立
         UIInterfaceOrientationMaskLandscapeLeft 屏幕向左横置
         UIInterfaceOrientationMaskLandscapeRight 屏幕向右橫置
         UIInterfaceOrientationMaskPortraitUpsideDown 未知
         UIInterfaceOrientationMaskLandscape = (UIInterfaceOrientationMaskLandscapeLeft | UIInterfaceOrientationMaskLandscapeRight),
         UIInterfaceOrientationMaskAll = (UIInterfaceOrientationMaskPortrait | UIInterfaceOrientationMaskLandscapeLeft | UIInterfaceOrientationMaskLandscapeRight | UIInterfaceOrientationMaskPortraitUpsideDown),
         UIInterfaceOrientationMaskAllButUpsideDown = (UIInterfaceOrientationMaskPortrait | UIInterfaceOrientationMaskLandscapeLeft | UIInterfaceOrientationMaskLandscapeRight),
     }
     */
    if(isHorizontal){//横屏
        if (@available(iOS 16.0, *)) {
            [[[XXYCustomUtil sharedInstance] getCurrentVC] setNeedsUpdateOfSupportedInterfaceOrientations];
            NSArray *array = [[[UIApplication sharedApplication] connectedScenes] allObjects];
            UIWindowScene *ws = (UIWindowScene *)array[0];
            UIWindowSceneGeometryPreferencesIOS *geometryPreferences =     [[UIWindowSceneGeometryPreferencesIOS alloc] init];
            geometryPreferences.interfaceOrientations =     UIInterfaceOrientationMaskLandscapeRight;
            [self updateHorizontalSubviews];
            [ws requestGeometryUpdateWithPreferences:geometryPreferences     errorHandler:^(NSError * _Nonnull error) {
                 //业务代码
            }];
        } else {
            [[UIDevice currentDevice] setValue:[NSNumber numberWithInteger:UIDeviceOrientationLandscapeLeft] forKey:@"orientation"];
        }

    }else{//竖屏
        if (@available(iOS 16.0, *)) {
            [[[XXYCustomUtil sharedInstance] getCurrentVC] setNeedsUpdateOfSupportedInterfaceOrientations];
            NSArray *array = [[[UIApplication sharedApplication] connectedScenes] allObjects];
            UIWindowScene *ws = (UIWindowScene *)array[0];
            UIWindowSceneGeometryPreferencesIOS *geometryPreferences = [[UIWindowSceneGeometryPreferencesIOS alloc] init];
            geometryPreferences.interfaceOrientations = UIInterfaceOrientationMaskPortrait;
            [self updateVerticalSubviews];
            [ws requestGeometryUpdateWithPreferences:geometryPreferences errorHandler:^(NSError * _Nonnull error) {
                 //业务代码
            }];
        } else {
            [[UIDevice currentDevice] setValue:[NSNumber numberWithInt:UIInterfaceOrientationPortrait] forKey:@"orientation"];
        }
    }
}