我正在尝试捕获UIInterfaceOrientation更改的时间。我知道如何使用UIDeviceOrientation做到这一点，但我想防止除左/右风景和肖像外的其他事物。
我当时使用的是UIDeviceOrientation，但每次将其面朝上放置时，一切都会在我的应用程序上发疯。
所以我想知道如何做这样的事情
UIDeviceOrientation orientation = [[UIDevice currentDevice] orientation];
UIInterfaceOrientation interfaceOrientation = [[UIApplication sharedApplication] statusBarOrientation];
CGFloat screenHeight = [[UIScreen mainScreen] bounds].size.height;
CGFloat screenWidth = [[UIScreen mainScreen] bounds].size.width;
if (interfaceOrientation landscape) {
if (orientation == UIDeviceOrientationLandscapeLeft)
{
}
else if (orientation == UIDeviceOrientationLandscapeRight)
{
}
}
if (interfaceOrientation Portrait) {
}
所以我只看风景或肖像。
任何帮助将不胜感激。
最佳答案
if (UIInterfaceOrientationIsLandscape(interfaceOrientation)) {
}
这是C函数，而不是目标C函数。
UIInterfaceOrientation是一个枚举。
另一个选择是：
if (interfaceOrientation & (UIInterfaceOrientationMaskLandscapeLeft | UIInterfaceOrientationMaskLandscapeRight)) {
}
从UIApplication.h标头中：
// Note that UIInterfaceOrientationLandscapeLeft is equal to UIDeviceOrientationLandscapeRight (and vice versa).
// This is because rotating the device to the left requires rotating the content to the right.
typedef NS_ENUM(NSInteger, UIInterfaceOrientation) {
UIInterfaceOrientationUnknown = UIDeviceOrientationUnknown,
UIInterfaceOrientationPortrait = UIDeviceOrientationPortrait,
UIInterfaceOrientationPortraitUpsideDown = UIDeviceOrientationPortraitUpsideDown,
UIInterfaceOrientationLandscapeLeft = UIDeviceOrientationLandscapeRight,
UIInterfaceOrientationLandscapeRight = UIDeviceOrientationLandscapeLeft
};
/* This exception is raised if supportedInterfaceOrientations returns 0, or if preferredInterfaceOrientationForPresentation
returns an orientation that is not supported.
*/
UIKIT_EXTERN NSString *const UIApplicationInvalidInterfaceOrientationException NS_AVAILABLE_IOS(6_0);
typedef NS_OPTIONS(NSUInteger, UIInterfaceOrientationMask) {
UIInterfaceOrientationMaskPortrait = (1 << UIInterfaceOrientationPortrait),
UIInterfaceOrientationMaskLandscapeLeft = (1 << UIInterfaceOrientationLandscapeLeft),
UIInterfaceOrientationMaskLandscapeRight = (1 << UIInterfaceOrientationLandscapeRight),
UIInterfaceOrientationMaskPortraitUpsideDown = (1 << UIInterfaceOrientationPortraitUpsideDown),
UIInterfaceOrientationMaskLandscape = (UIInterfaceOrientationMaskLandscapeLeft | UIInterfaceOrientationMaskLandscapeRight),
UIInterfaceOrientationMaskAll = (UIInterfaceOrientationMaskPortrait | UIInterfaceOrientationMaskLandscapeLeft | UIInterfaceOrientationMaskLandscapeRight | UIInterfaceOrientationMaskPortraitUpsideDown),
UIInterfaceOrientationMaskAllButUpsideDown = (UIInterfaceOrientationMaskPortrait | UIInterfaceOrientationMaskLandscapeLeft | UIInterfaceOrientationMaskLandscapeRight),
};
关于ios - 如何获取设备的UIInterfaceOrientation，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/19150291/