如何以编程方式确定 iPhone 界面方向? [英] How to programmatically determine iPhone interface orientation?

问题描述

UIDevice.orientation 的可能值包括 UIDeviceOrientationFaceUp 和 UIDeviceOrientationFaceDown.虽然知道设备是扁平的可能很有用，但这并不能告诉我们它是扁平的，以纵向或横向模式显示界面.在设备返回模糊信息的情况下，有没有办法找到 GUI 的当前方向?我想我可以跟踪方向更改事件以记住最后的纵向/横向方向或检查主 UIView 的边界高度和宽度，但这似乎很麻烦.设备或 UIView 上是否有我遗漏的属性?

The possible values for UIDevice.orientation include UIDeviceOrientationFaceUp and UIDeviceOrientationFaceDown. While it might be useful to know that the device is flat, this doesn't tell us whether it's flat displaying an interface oriented in portrait or landscape mode. Is there a way to find the current orientation of the GUI in cases where the device is returning ambiguous information? I suppose I could track orientation change events to remember the last portrait/landscape orientation or check the main UIView's bounds height and width, but that seems kludgey. Is there a property on the device or UIView that I'm missing?

推荐答案

在视图控制器中你可以简单地使用代码:

In a viewcontroller you can simply use the code:

UIInterfaceOrientation interfaceOrientation = self.interfaceOrientation;

UIInterfaceOrientation 是一个枚举:

The UIInterfaceOrientation is an enum:

typedef enum {
  UIInterfaceOrientationPortrait           = UIDeviceOrientationPortrait,
  UIInterfaceOrientationPortraitUpsideDown = UIDeviceOrientationPortraitUpsideDown,
  UIInterfaceOrientationLandscapeLeft      = UIDeviceOrientationLandscapeLeft,
  UIInterfaceOrientationLandscapeRight     = UIDeviceOrientationLandscapeRight
} UIInterfaceOrientation;

这篇关于如何以编程方式确定 iPhone 界面方向?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！