iOS转屏

iOS7中

不支持转屏：

-(BOOL)shouldAutorotate
{
    return NO;
}

iOS5/6中，不支持转屏：

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    
    return interfaceOrientation == UIInterfaceOrientationPortrait;
}

-(BOOL)shouldAutorotate
{
    return NO;
}

另外，有导航栏时，须重写

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    
    return interfaceOrientation == UIInterfaceOrientationPortrait;
}

-(BOOL)shouldAutorotate
{
    return NO;
}