iphone 默认只支持竖屏某些界面只支持横屏

最新推荐文章于 2021-12-21 09:15:00 发布

原创最新推荐文章于 2021-12-21 09:15:00 发布 · 340 阅读

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本文介绍了一个UIViewController子类的实现方式，该ViewController仅支持横屏显示，并在加载时默认设置为左横屏。代码中详细展示了如何通过重写UIViewController的方法来控制界面的方向行为。

某 ViewController 支持横屏，且进入就是横屏

- (instancetype)init {
    if (self = [super init]) {
        // 进入就横屏 只支持横屏
        [KMGlobal setAllowRotate:YES];
    }
    return self;
}


- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    [self initResource];
}


- (UIInterfaceOrientationMask)supportedInterfaceOrientations {
    return UIInterfaceOrientationMaskLandscapeLeft | UIInterfaceOrientationMaskLandscapeRight;
}


- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation {
    return UIInterfaceOrientationLandscapeLeft;
}


- (BOOL)shouldAutorotate {
    return NO;
}


- (void)viewWillAppear:(BOOL)animated {
    // 允许该界面旋转
    [KMGlobal setAllowRotate:YES];
}


- (void)viewWillDisappear:(BOOL)animated {
    // 界面消失后 取消允许旋转
    [KMGlobal setAllowRotate:NO];
}

AppDelegate

- (UIInterfaceOrientationMask)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window {
    if ([KMGlobal allowRotate]) {
        return UIInterfaceOrientationMaskAll;
    }
    else {
        return (UIInterfaceOrientationMaskPortrait);
    }
}