ios - Objective-C 赋予下一个 View 值(value)

Question

#import "OtherController.h"
#import "ViewController.h"
ViewController *viewController;

@interface OtherController ()

@end

@implementation OtherController

- (void)viewDidLoad
{
    [super viewDidLoad];
    viewController = [[ViewController alloc] initWithNibName:@"viewController" bundle:nil];
}

- (IBAction)levelNormal{
    viewController.level = 1;
    [self.navigationController pushViewController:viewController animated:YES];

}

我已经尝试了我在 stackoverflow 上阅读的各种提示，尽管它们似乎都没有正确工作。我试图在单击按钮时打开 View ，当 View 打开时，根据按下的按钮， View 应该有不同的“级别”编号。就我而言，我没有 NavigationController。我已经阅读了有关将代码粘贴到 AppDelegate 类中的不同帖子，尽管这对我来说也不起作用。当我调试按钮的按下时，我看到该值已更改，但当它尝试更改 View 时没有其他任何 react 。

这是 ViewController 头文件:

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController
@property (weak, nonatomic) IBOutlet UIButton *resumeButton;
@property (weak, nonatomic) IBOutlet UIImageView *opacityScreen;
@property (weak, nonatomic) IBOutlet UILabel *scoreField;
@property (weak, nonatomic) IBOutlet UIButton *pauseButton;
@property (weak, nonatomic) IBOutlet UIButton *mainMenuButton;
@property (weak, nonatomic) NSTimer * nst;
@property(nonatomic) int level;
@end

Answer 1

在 AppDelegate 的 didFinishLaunchingWithOptions 中创建 UINavigationController 对象，并将 UIViewcontroller 对象分配为如下所示的 rootViewController 并将 navObj 传递给窗口 Root View 。

viewController = [[ViewController_iPhone alloc] initWithNibName:@"ViewController_iPhone" bundle:nil]; UINavigationController *navObj = [[UINavigationController alloc] initWithRootViewController:viewController]; [self.window setRootViewController:navObj];