ios - 创建一个 UINavigationController 目前 2 UIViewController 在 Objective-C 中

Question

我有 2 个 UIViewController，并且希望 UINavigationController 上带有 UINavigationBar 和 UINavigationItem。但我的代码不起作用..

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

尝试在 Storyboard中嵌入导航 Controller ，如下所示:

首先在 Storyboard中选择您的testView1。

选择导航 Controller

和变化如下

- (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];
}