Objective-C 赋予下一个视图价值

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];

}

我已经尝试过在 stackoverflow 上阅读的各种提示，但它们似乎都没有正常工作。我试图在单击按钮时打开视图，当视图打开时，根据按下的按钮，视图应该有不同的“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，我看到值已更改，但在尝试更改视图时没有任何其他反应。

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 传递给窗口根视图。

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

Answer 2

您必须使用根视图控制器 OtherController 初始化 UINavigationController。

查看本教程：

http://www.raywenderlich.com/5138/beginning-storyboards-in-ios-5-part-1

Answer 3

- (IBAction)levelNormal
{
    //  viewController.level = 1;



    OtherController *nextobj=[[OtherController alloc] initWithNibName:@"OtherController" bundle:nil];
    nextobj.dictionay_passdata=[your_array_data]; //your data

    [self.navigationController pushViewController:nextobj animated:YES];

}

在您的 OtherController 中创建一个字典以在 OtherController 中存储数据

OtherController.h 文件

{
    NSMutableDictionary *dictionay_passdata;

}

其他控制器.m 文件

@implementation OtherController

@synthesize dictionay_passdata; //this is must to write in your code





- (void)viewDidLoad
{
    NSLog(@"%@",dictionay_passdata);

    [super viewDidLoad];
    // Do any additional setup after loading the view from its nib.
}