shouldAutorotateToInterfaceOrientation在iOS 6中不起作用
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在ios 6中，shouldAutorotateToInterfaceOrientation无法正常工作，但在iOS 5.0和5.1中正常运行。
[iOS 6我需要更改什么？这是我的代码：
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
if([[[SampleApplicationAppDelegate instance].callInfoDictionary valueForKey:IS_CHAT] isEqualToString:NO_RESPONSE])
{
int nAngle = 0;
BOOL bRet = NO;
switch (interfaceOrientation) {
case UIInterfaceOrientationPortrait:
nAngle = 90;
bRet = YES;
NSLog(@".......Preview = %f %f",_previewCamera.frame.size.width,_previewCamera.frame.size.height);
_previewCamera.transform = CGAffineTransformMakeRotation(M_PI*1.5);
NSLog(@"Preview = %f %f",_previewCamera.frame.size.width,_previewCamera.frame.size.height);
break;
case UIInterfaceOrientationPortraitUpsideDown:
nAngle = 270;
bRet = YES;
_previewCamera.transform = CGAffineTransformMakeRotation(M_PI_2);
break;
case UIInterfaceOrientationLandscapeLeft:
nAngle = 0;
bRet = YES;
//_previewCamera.transform = CGAffineTransformMakeRotation(M_PI*1.5);
break;
case UIInterfaceOrientationLandscapeRight:
nAngle = 180;
bRet = YES;
//_previewCamera.transform = CGAffineTransformMakeRotation(M_PI_2);
break;
default:
break;
}
return bRet;
}
if(interfaceOrientation == UIInterfaceOrientationPortrait || interfaceOrientation == UIInterfaceOrientationPortraitUpsideDown)
return YES;
return NO;
}
[当我搜索此定向问题时，我发现的只是this和this，但对我没有任何帮助：（
请帮助.....
答案
EDIT：之所以发生这种情况，是因为Apple已更改了管理UIViewController方向的方式。在iOS6中，方向处理方式有所不同。在iOS6中，不推荐使用shouldAutorotateToInterfaceOrientation方法。视图控制器（例如UINavigationController）不咨询其子级来确定是否应自动旋转。默认情况下，将应用程序和视图控制器支持的界面方向设置为UIInterfaceOrientationMaskAll（对于iPad idiom）和UIInterfaceOrientationMaskAllButUpsideDown（对于iPhone习惯用语）。
如果要将特定视图更改为所需的方向，则必须执行某种子类或类别并重写自动旋转方法以返回所需的方向。
将此代码放在您的根视图控制器中。这将有助于UIViewController确定其方向。
//RotationIn_IOS6 is a Category for overriding the default orientation.
@implementation UINavigationController (RotationIn_IOS6)
-(BOOL)shouldAutorotate
{
return [[self.viewControllers lastObject] shouldAutorotate];
}
-(NSUInteger)supportedInterfaceOrientations
{
return [[self.viewControllers lastObject] supportedInterfaceOrientations];
}
- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
return [[self.viewControllers lastObject] preferredInterfaceOrientationForPresentation];
}
@end
现在您需要在viewController中实现以下方法（在iOS6中引入）以进行定向
- (BOOL)shouldAutorotate
{
//returns true if want to allow orientation change
return TRUE;
}
- (NSUInteger)supportedInterfaceOrientations
{
//decide number of origination tob supported by Viewcontroller.
return UIInterfaceOrientationMaskAll;
}
- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
//from here you Should try to Preferred orientation for ViewController
}
然后将您的代码放入下面的方法中。每当设备方向改变时该方法将被称为：
- (void)willAnimateRotationToInterfaceOrientation:(UIInterfaceOrientation) interfaceOrientation duration:(NSTimeInterval)duration
{
if([[[SampleApplicationAppDelegate instance].callInfoDictionary valueForKey:IS_CHAT] isEqualToString:NO_RESPONSE])
{
int nAngle = 0;
BOOL bRet = NO;
switch (interfaceOrientation) {
case UIInterfaceOrientationPortrait:
nAngle = 90;
bRet = YES;
NSLog(@".......Preview = %f %f",_previewCamera.frame.size.width,_previewCamera.frame.size.height);
_previewCamera.transform = CGAffineTransformMakeRotation(M_PI*1.5);
NSLog(@"Preview = %f %f",_previewCamera.frame.size.width,_previewCamera.frame.size.height);
break;
case UIInterfaceOrientationPortraitUpsideDown:
nAngle = 270;
bRet = YES;
_previewCamera.transform = CGAffineTransformMakeRotation(M_PI_2);
break;
case UIInterfaceOrientationLandscapeLeft:
nAngle = 0;
bRet = YES;
//_previewCamera.transform = CGAffineTransformMakeRotation(M_PI*1.5);
break;
case UIInterfaceOrientationLandscapeRight:
nAngle = 180;
bRet = YES;
//_previewCamera.transform = CGAffineTransformMakeRotation(M_PI_2);
break;
default:
break;
}
}
编辑：检查窗口，您需要在窗口上将控制器添加为rootViewController，而不是如下所示的addSubview
self.window.rootViewController=viewController;
有关详细信息，here的有关iOS6.0 Beta 2 OTA的文章。
我希望这会有所帮助。
另一答案
我解决此问题的方法是，当我的应用程序在Delegate类中启动时，替换以下行
window addSubview: navigationController.view
with
window.rootViewController = navigationController
完成此更改后，我的应用开始处理屏幕旋转
另一答案
这是因为Apple已从ios6中弃用了应该使用autoautorate方法，而改用这些方法
- (BOOL)shouldAutorotate NS_AVAILABLE_IOS(6_0);
- (NSUInteger)supportedInterfaceOrientations NS_AVAILABLE_IOS(6_0);
// Returns interface orientation masks.
- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation NS_AVAILABLE_IOS(6_0);
另一答案
我已解决此问题，仅使用此
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
if(![AppDelegate instance])
return (interfaceOrientation == UIInterfaceOrientationPortrait) || (interfaceOrientation == UIInterfaceOrientationPortraitUpsideDown);
if([[[AppDelegate instance].callInfoDictionary valueForKey:IS_CHAT] isEqualToString:NO_RESPONSE])
{
int nAngle = 0;
BOOL bRet = NO;
switch (interfaceOrientation) {
case UIInterfaceOrientationPortrait:
{
nAngle = 90;
bRet = YES;
NSLog(@".......Preview = %f %f",_previewCamera.frame.size.width,_previewCamera.frame.size.height);
NSComparisonResult order = [[UIDevice currentDevice].systemVersion compare: @"6.0" options: NSNumericSearch];
if (order == NSOrderedSame || order == NSOrderedDescending)
{
// OS version >= 6.0
NSLog(@"ami iOS 6 er device");
_previewCamera.transform = CGAffineTransformMakeRotation(M_PI_2);
}
else
{
// OS version < 6.0
_previewCamera.transform = CGAffineTransformMakeRotation(M_PI*1.5);
}
NSLog(@"Preview = %f %f",_previewCamera.frame.size.width,_previewCamera.frame.size.height);
NSLog(@"-->%s %d",__FUNCTION__,__LINE__);
break;
}
case UIInterfaceOrientationPortraitUpsideDown:
{
nAngle = 270;
bRet = YES;
NSComparisonResult order = [[UIDevice currentDevice].systemVersion compare: @"6.0" options: NSNumericSearch];
if (order == NSOrderedSame || order == NSOrderedDescending)
{
// OS version >= 6.0
NSLog(@"ami iOS 6 er device");
_previewCamera.transform = CGAffineTransformMakeRotation(M_PI*1.5);
}
else
{
// OS version < 6.0
_previewCamera.transform = CGAffineTransformMakeRotation(M_PI_2);
}
break;
}
case UIInterfaceOrientationLandscapeLeft:
nAngle = 0;
bRet = YES;
//_previewCamera.transform = CGAffineTransformMakeRotation(M_PI*1.5);
break;
case UIInterfaceOrientationLandscapeRight:
nAngle = 180;
bRet = YES;
//_previewCamera.transform = CGAffineTransformMakeRotation(M_PI_2);
break;
default:
break;
}
return bRet;
}
if(interfaceOrientation == UIInterfaceOrientationPortrait || interfaceOrientation == UIInterfaceOrientationPortraitUpsideDown)
return YES;
return NO;
}
另一答案
请尝试这一步骤，对您有所帮助。
在您的viewcontroller类中编写代码
-(BOOL)shouldAutorotate
{
return YES;
}
-(NSUInteger)supportedInterfaceOrientations{
return UIInterfaceOrientationMaskLandscape;
}
然后在appdelegate中搜索此行[window addSubview：viewController.view]并将其替换为window.rootViewController = viewController;
为它打气，它将为iOS 6提供简单的解决方案
另一答案
这对我有用
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
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