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沒地方放壓縮包，我就在這里寫個(gè)簡(jiǎn)單吧，2個(gè)UIViewController，你自己新建一個(gè)工程就加兩按鈕就可以測(cè)試。
核心需要添加的方法如下：

1,PortraitViewController 不旋轉(zhuǎn)，保持豎屏

//iOS 5
- (BOOL) shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation
{
	return (toInterfaceOrientation == UIInterfaceOrientationPortrait);
}
//iOS 6
- (BOOL)shouldAutorotate
{
	return NO;
}
- (NSUInteger)supportedInterfaceOrientations
{
	return UIInterfaceOrientationMaskPortrait;
}
- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
	return UIInterfaceOrientationPortrait;
}

LandscapeViewController 始終保持橫屏

//iOS 5
- (BOOL) shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation
{
	return (toInterfaceOrientation == self.preferredInterfaceOrientationForPresentation);
}
//iOS 6
- (BOOL) shouldAutorotate
{
	return YES;
}
- (NSUInteger)supportedInterfaceOrientations
{
	return UIInterfaceOrientationMaskLandscapeRight;
}
- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
	return UIInterfaceOrientationLandscapeRight;
}