iOS两个强制旋转屏幕的方法

第一个：

[cpp] view plaincopy

1. // 状态栏动画持续时间  
2. CGFloat duration = [UIApplication sharedApplication].statusBarOrientationAnimationDuration;  
3. [UIView animateWithDuration:duration animations:^{  
4.     // 修改状态栏的方向及view的方向进而强制旋转屏幕  
5.     [[UIApplication sharedApplication] setStatusBarOrientation:_bottomView.landscapeModel ? UIInterfaceOrientationLandscapeRight : UIInterfaceOrientationPortrait];  
6.     self.navigationController.view.transform = _bottomView.landscapeModel ? CGAffineTransformMakeRotation(M_PI_2) : CGAffineTransformIdentity;  
7.     self.navigationController.view.bounds = CGRectMake(self.navigationController.view.bounds.origin.x, self.navigationController.view.bounds.origin.y, self.view.frame.size.height, self.view.frame.size.width);  
8. }];  

第二个：

非arc：

[cpp] view plaincopy

1. if ([[UIDevice currentDevice] respondsToSelector:@selector(setOrientation:)]) {  
2.   [[UIDevice currentDevice] performSelector:@selector(setOrientation:)  
3.   withObject:(id)UIInterfaceOrientationLandscapeRight];  
4.   }  

arc下：

[cpp] view plaincopy

1. if ([[UIDevice currentDevice] respondsToSelector:@selector(setOrientation:)]) {  
2.             SEL selector = NSSelectorFromString(@"setOrientation:");  
3.             NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:[UIDevice instanceMethodSignatureForSelector:selector]];  
4.             [invocation setSelector:selector];  
5.             [invocation setTarget:[UIDevice currentDevice]];  
6.             int val = UIInterfaceOrientationLandscapeRight;  
7.             [invocation setArgument:&val atIndex:2];  
8.             [invocation invoke];  
9.         }  

http://blog.csdn.net/yiyaaixuexi/article/details/8035014