如何使用导航控制器创建静态子视图？

Question

我创建了一个带有一堆视图控制器的导航控制器。

我想在底部添加一个子视图，当用户在这一堆视图之间导航时，该子视图保持静态（不移动）。

就像在某些应用中一样，底部有一个“广告栏”。

我该怎么做？

Answer 1

如果我理解正确，这就是你想要的：

您可以通过创建一个包含UINavigationController的自定义UIViewController来实现此目的。创建一个名为“CustomViewController”的新类，并粘贴以下代码：

<强>接口

#import <UIKit/UIKit.h>

@interface CustomViewController : UIViewController

- (id)initWithViewController:(UIViewController*)viewController bottomView:(UIView*)bottomView;

@end

<强>实施

#import "CustomViewController.h"

@implementation CustomViewController

- (id)initWithViewController:(UIViewController*)viewController bottomView:(UIView*)bottomView
{
    self = [super init];
    if (self) {

        //  Set up view size for navigationController; use full bounds minus 60pt at the bottom
        CGRect navigationControllerFrame = self.view.bounds;
        navigationControllerFrame.size.height -= 60;
        viewController.view.frame = navigationControllerFrame;

        //  Set up view size for bottomView
        CGRect bottomViewFrame = CGRectMake(0, self.view.bounds.size.height-60, self.view.bounds.size.width, 60);
        bottomView.frame = bottomViewFrame;

        //  Enable autoresizing for both the navigationController and the bottomView
        viewController.view.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
        bottomView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleTopMargin;

        //  Add views as subviews to the current view
        [self.view addSubview:viewController.view];
        [self.view addSubview:bottomView];
    }
    return self;
}

@end

现在使用CustomViewController：

UIView *myBottomView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 200, 100)];
myBottomView.backgroundColor = [UIColor redColor];

CustomViewController *customViewController = [[CustomViewController alloc] initWithViewController:<yourNavigationController> bottomView:myView];

Answer 2

为什么不在与导航控制器视图相同的级别添加此静态子视图（通常在UIWindow附近）。只需将其添加到最顶层即可。