主UIViewController的子視圖中可以有兩個導航控制器嗎？

Question

下圖說明了我要執行的操作：

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

這是針對iPad應用的。 可能嗎？ 如果是這樣，有人可以發布框架代碼來做到這一點嗎？

提前致謝

Answer 1

是的，有可能。 骨架代碼：

頭文件：

@interface SGBSplitViewController : UIViewController

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

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

@end

實施文件：

@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>;
}