在我的应用程序中,四个viewcontrollers在potrait模式下接下来导航,但是我在最终的viewcontroller中添加了coverflow,当模拟器旋转时它应该是landscape.I选择plist中的所有方向执行Upsidedown方向,这样coverflow在Landscape中运行良好,但所有其他的viewcontrollers也在rotatad时进入景观,但是我需要这些viewcontrollers在potrait中,即使模拟器是旋转的。我尝试了许多代码,例如,
shouldAutorotate and supportedInterfaceOrientations.
但是,如果有任何想法,我无法明确解决我期待的问题。
答案 0 :(得分:1)
将观察者添加到要旋转的视图的viewDidLoad方法,如下所示:
[[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications];
[[NSNotificationCenter defaultCenter]
addObserver:self selector:@selector(orientationChanged:)
name:UIDeviceOrientationDidChangeNotification
object:[UIDevice currentDevice]];
然后根据 orientationChanged 方法中的横向视图设置视图,如下所示:
- (void) orientationChanged:(NSNotification *)note{
UIDevice * device = [UIDevice currentDevice];
switch(device.orientation)
{
case UIDeviceOrientationPortrait:
break;
case UIDeviceOrientationPortraitUpsideDown:
break;
case UIDeviceOrientationLandscapeLeft:
break;
case UIDeviceOrientationLandscapeRight:
break;
default:
break;
};
}
答案 1 :(得分:0)
在iOS 6及更高版本中,负责旋转的视图控制器是容器ViewControllers,例如UINavigationController& UITabBarController。你在项目中使用什么作为rootviewcontroller?
我编写了导航控制器类别here,您可以在其中处理各个视图控制器支持的接口方向。
答案 2 :(得分:0)
添加新的Objective-C类(UINavigationController的子类)并将以下代码添加到.m文件
-(NSUInteger)supportedInterfaceOrientations
{
NSLog(@"supportedInterfaceOrientations = %d ", [self.topViewController supportedInterfaceOrientations]);
return [self.topViewController supportedInterfaceOrientations];
}
-(BOOL)shouldAutorotate
{
return self.topViewController.shouldAutorotate;
}
-(BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// You do not need this method if you are not supporting earlier iOS Versions
return [self.topViewController shouldAutorotateToInterfaceOrientation:interfaceOrientation];
}
添加新类后,转到ViewController类并进行以下更改
- (BOOL)shouldAutorotate // iOS 6 autorotation fix
{
return YES;
}
- (NSUInteger)supportedInterfaceOrientations // iOS 6 autorotation fix
{
return UIInterfaceOrientationMaskAll;
}
- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation // iOS 6 autorotation fix
{
return UIInterfaceOrientationPortrait;
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation
{
return YES;
}
在shouldAutorotate中,shouldAutorotateToInterfaceOrientation:如果你想让ViewController支持多个方向,则返回YES,否则返回NO,同样在houldAutorotateToInterfaceOrientation中:方法传递你想要的特定ViewController的Orintation,对所有视图控制器重复相同的操作。
这样做的原因: -
1:虽然您可以将所有viewController的preferredInterfaceOrientationForPresentation更改为特定方向,但由于您使用的是UINavigationController,因此您还需要覆盖UINavigationController的supportedInterfaceOrientations
2:为了覆盖UINavigationController的supportedInterfaceOrientations,我们已经将UINavigationController子类化,并修改了与UINavigation Orientation相关的方法。
希望它会对你有所帮助!
答案 3 :(得分:0)
viewDidLoad或viewWillApper方法添加以下代码
[[UIApplication sharedApplication] setStatusBarOrientation:UIInterfaceOrientationPortrait animated:YES];
设置方向
#if (__IPHONE_6_0 >= __IPHONE_OS_VERSION_MAX_ALLOWED)
- (NSInteger)supportedInterfaceOrientations {
return (UIInterfaceOrientationMaskPortraitUpsideDown | UIInterfaceOrientationMaskPortrait);
}
#endif
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
return (interfaceOrientation==UIInterfaceOrientationPortrait);
}