主UIViewController的子视图中可以有两个导航控制器吗？

Question

下图说明了我要执行的操作：

http://img337.imageshack.us/img337/1475/multinav.png

这是针对iPad应用的。 可能吗？ 如果是这样，有人可以发布框架代码来做到这一点吗？

提前致谢

Answer 1

是的，有可能。 骨架代码：

头文件：

@interface SGBSplitViewController : UIViewController

@property (nonatomic, strong, readonly) UIViewController *leftViewController;
@property (nonatomic, strong, readonly) UIViewController *rightViewController;

- (id)initWithLeftViewController:(UIViewController *)leftViewController
             rightViewController:(UIViewController *)rightViewController;

@end

实施文件：

@implementation SGBSplitViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    return nil;
}

- (id)initWithLeftViewController:(UIViewController *)leftViewController
             rightViewController:(UIViewController *)rightViewController
{
    self = [super initWithNibName:nil bundle:nil];
    if (self)
    {
        _leftViewController = leftViewController;
        _rightViewController = rightViewController;
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];

    [self addChildViewController:self.leftViewController];
    [self.view addSubview:self.leftViewController.view];
    [self.leftViewController didMoveToParentViewController:self];

    [self addChildViewController:self.rightViewController];
    [self.view addSubview:self.rightViewController.view];
    [self.rightViewController didMoveToParentViewController:self];
}

- (void)viewDidLayoutSubviews
{
    [super viewDidLayoutSubviews];

    self.leftViewController.view.frame = <frame>;
    self.rightViewController.view.frame = <frame>;
}