视图翻转问题

//实现shouldAutorotateToInterfaceOrientation方法可以设置图片翻转
//直接return YES 可开启上下左右横向竖向的翻转
//一下代码只支持横向显示不支持竖向翻转

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {

    //return YES; 

	return (interfaceOrientation == UIInterfaceOrientationLandscapeRight || interfaceOrientation == UIInterfaceOrientationLandscapeLeft);
}