Iphone 仅允许左横向和右横向方向

我如何使我的应用程序只允许横向，但同时允许横向（左侧和右侧）？ 所以，如果我旋转180°，应用程序将旋转，但如果我在纵向旋转，应用程序不会旋转

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谢谢

尝试将此添加到UIViewController：

// Override to allow orientations other than the default portrait orientation.
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
    // Return YES for supported orientations
    return (interfaceOrientation == UIInterfaceOrientationLandscapeLeft ||
            interfaceOrientation == UIInterfaceOrientationLandscapeRight);
}

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您可以在此处了解更多信息：

尝试将其添加到UIViewController：

// Override to allow orientations other than the default portrait orientation.
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
    // Return YES for supported orientations
    return (interfaceOrientation == UIInterfaceOrientationLandscapeLeft ||
            interfaceOrientation == UIInterfaceOrientationLandscapeRight);
}

您可以在此处了解更多信息：