iOS模拟器中UIViewController事件的顺序？
以下是错误还是功能？
我的测试应用程序有一个根 UIViewController。它实现了 viewDidAppear: 和 willRotateToDeviceOrientation:
现在，iOS 模拟器已经在运行并且设置为 landscape。 如果我设置断点，我可以清楚地看到 viewDidAppear: 在 willRotateToDeviceOrientation: 之前被调用
，其结果是在 viewDidAppear: 中，宽度和视图的高度仍然不正确：宽度= 768，高度= 1024。 只有在 willRotateToDeviceOrientation: 之后它们才是正确的。
如果我退出模拟器并运行应用程序，模拟器将以纵向启动。只有 viewDidAppear: 会被触发，并且宽度 = 768，高度 = 1024 - 正如预期的那样。
为什么要调用 willRotateToDeviceOrientation: ？设备已经处于横向状态，并且它知道这一点，因为它根本不会触发旋转动画。
我是否应该在 willRotateToDeviceOrientation: 中重新配置视图的尺寸？
Is the follwing a bug or a feature?
My test app has one root UIViewController. It implements viewDidAppear: and willRotateToDeviceOrientation:
Now it happens that the iOS simulator is already running and is set to landscape.
If I put breakpoints, I can clearly see that viewDidAppear: is called before willRotateToDeviceOrientation:
The consequence of this is that in viewDidAppear: the width and height of the view are still incorrect: width = 768, height = 1024.
Only after willRotateToDeviceOrientation: they are correct.
If I quit the simulator and run the app, the simulator will start in portrait. Only viewDidAppear: will be triggered and the width = 768, the height = 1024 - as expected.
Why is the willRotateToDeviceOrientation: called at all? The device is already in landscape and it knows that because it does not trigger a rotation animation at all.
Am I supposed to reconfigure my views' dimensions in willRotateToDeviceOrientation:?
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