当接口在Iphone中旋转时，有没有办法调用函数？

Question

当我的界面旋转时，我想调用某些功能。我该怎么做？

Answer 1

取决于您想要做什么，

在您的活动视图控制器类中实现some of these methods：

• -willRotateToInterfaceOrientation:duration:
• -willAnimateRotationToInterfaceOrientation:duration:
• -didRotateFromInterfaceOrientation:

或者您的app委托中的some of these methods：

• -application:willChangeStatusBarOrientation:duration:
• -application:didChangeStatusBarOrientation:

或听取some of these local notifications：

• UIApplicationWillChangeStatusBarFrameNotification
• UIApplicationDidChangeStatusBarFrameNotification
• UIApplicationWillChangeStatusBarOrientationNotification
• UIApplicationDidChangeStatusBarOrientationNotification

Answer 2

您可以使用：

   [[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications];

   [[NSNotificationCenter defaultCenter] addObserver:self
      selector:@selector(yourMethod:)
      name:@"UIDeviceOrientationDidChangeNotification" object:nil];