iOS横屏设置方式

- 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]