创建一个 UINavigationController For present 2 UIViewController in Objective-C

Question

我有 2 个 UIViewController 并且想要在它们上面安装带有 UINavigationBar 和 UINavigationItem 的 UINavigationController。但是我的代码不起作用..

这是我的代码：

#import "testView1.h"
#import "testView2.h"

@interface testView1 ()

@end

@implementation testView1

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    self.view.backgroundColor = [UIColor darkGrayColor];
    UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:self];
    testView2 *detail = [testView2 new];
    [navController pushViewController:detail animated:YES];
}

Answer 1

您不会看到第一个视图控制器，因为您已经将第二个视图控制器推送到导航控制器上。

Answer 2

尝试在故事板中嵌入导航控制器，如下所示：

首先 select 你的 testView1 在故事板中。

Select 导航控制器

并变化如下

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.

   /// testView2 *detail = [testView2 new];
    testView2 *detail =  [self.storyboard instantiateViewControllerWithIdentifier:@"testView2 Identifier"]; // if you have add controller in storyboard
    [self.navigationController pushViewController:detail animated:YES];
}

创建一个 UINavigationController For present 2 UIViewController in Objective-C

Create a UINavigationController For present 2 UIViewController in Objective-C

objective-c

uinavigationbar

uinavigationcontroller

uinavigationitem

ios