我的应用程序有一个 UINADIGATION 控制器, 它不支持旋转 。 但是我要在导航控制器上方显示一个应该支持旋转的模式查看控制器 。 这是否可能? 我试图在视图控制器上跳过 < code> 应该自动旋转到 InterfaceOrentation , 该控制器显示时时时, 却看起来不起作用 。
我认为,除了显示时态返回 YES 的视图控制器 < code> 外,还应将您的导航控制器s < autorotate to Interface指导 替换为 YES ,当该模式查看控制器显示时,返回 > YES ,否则,返回 no 。
您需要确保您的设备生成设备定向通知( UIDevicalentation Did ChangeNationation) :
确保:
generates DeviceOrentation通知 已设定为真
苹果医生写道:
“ 窗口对象所做的大部分工作都与改变当前方向有关。 但是, 它与根视图控制器一起工作, 以确定是否真的应该改变方向, 如果是的话, 应该用什么其他方法来回应变化。 如果这个控制器是一个容器, 它可能要依靠孩子来决定是否应该改变方向 。 ”
如果您的 root 视图控制器( 用户导航控制器? ) 不支持旋转, 程序启动时可能会设置为假 。 在这种情况下, 您需要在适当时将其打开 :
UIDevice myDevice = [UIDevice currentDevice];
[myDevice beginGeneratingDeviceOrientationNotifications];
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