- 1.界面旋转，MainScreen的宽高不变，键盘位置不变
'''
CGFloat duration = [UIApplication sharedApplication].statusBarOrientationAnimationDuration;
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:duration];
self.view.transform =CGAffineTransformMakeRotation(M_PI/2);
[UIView commitAnimations];
'''
2.界面旋转，MainScreen的宽高改变，键盘位置不变
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if ([[UIDevice currentDevice] respondsToSelector:@selector(setOrientation:)]) {
SEL selector = NSSelectorFromString(@"setOrientation:");
NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:[UIDevice instanceMethodSignatureForSelector:selector]];
[invocation setSelector:selector];
[invocation setTarget:[UIDevice currentDevice]];
int val = UIInterfaceOrientationLandscapeRight;
[invocation setArgument:&val atIndex:2];
[invocation invoke];
}
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3.界面旋转，MainScreen的宽高改变，键盘位置改变
a.General—>中勾选Lnadscape Left/Lnadscape Right
Pasted Graphic.tiff
b.控制器中实现以下两个方法：
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// 支持设备自动旋转
- (BOOL)shouldAutorotate
{
return YES;
}
/**
* 设置特殊的界面支持的方向,这里特殊界面只支持Home在右侧的情况
*/
- (UIInterfaceOrientationMask)supportedInterfaceOrientations
{
return UIInterfaceOrientationMaskLandscapeRight;
}
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PS：如何判断当前是否横屏,一下3个方法都可以
self.interfaceOrientation（iOS 2.0~8.0）
[UIApplication sharedApplication] statusBarOrientation]
[[UIDevice currentDevice] orientation]
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