ios – 向UINavigationController添加自定义视图

我有一个UINavigationController,当一个事件被触发时,我需要一个自定义UIView出现在NavigationBar下面,但不会阻碍当前的ViewController.当弹出/推送控制器时,我还需要使UIView持久化.

-----------------
|   Status Bar    |
 -----------------
|     Nav Bar     |
 -----------------
|   Custom View   |
 -----------------
|                 |
| View Controller |
|                 |
 -----------------

我正在使用我的CustomView(UIView)设置框架,如：

- (id)initWithNavigationController:(UINavigationController *)navController {
    self.navController = navController;
    return [self init];
}

- (id)init
{
    CGRect viewFrame = self.navController.view.frame;

    return [self initWithFrame:CGRectMake(viewFrame.origin.x,self.navController.navigationBar.frame.origin.y + self.navController.navigationBar.frame.size.height,viewFrame.size.width,40.0)];
}

这是解决这个问题的方法吗？

解决方法

- (id)initWithNavigationController:(UINavigationController *)navController {
    CGRect viewFrame = navController.view.frame;

    if (self = [super initWithFrame:CGRectMake(viewFrame.origin.x,navController.navigationBar.frame.origin.y + navController.navigationBar.frame.size.height,40.0)]){
       self.navController = navController;
      }
    return self;
   }

然后

CustomView* _myCustomView = [[CustomView alloc] initWithNavigationController:navigationController];
[navigationcontroller.view addSubview:_myCustomView];

原文地址：https://www.jb51.cc/iOS/333868.html