ios - Uinavigation Controller 问题

Question

您好，我在 iOS 中以编程方式创建了 UInavigation Controller ，但问题是当我移动到下一个 View Controller 时，我指向同一屏幕。我创建了另一个名称为 InfoView 的 View ，但是当我推送到 InfoView 它显示与我在 ViewController 中创建的按钮相同的屏幕。

#import "AppDelegate.h"
    #import "ViewController.h"

    @interface AppDelegate ()
    {
        UINavigationController *navigation;

    }
    @end

    @implementation AppDelegate


    - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
        // Override point for customization after application launch.
        [[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleLightContent];
        self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];

        navigation = [[UINavigationController alloc] initWithRootViewController:[[ViewController alloc] init]];
        self.window.rootViewController = navigation;

        [self.window makeKeyAndVisible];
        return YES;
    }


#import "ViewController.h"
#import "InfoView.h"

@interface ViewController ()
{
    UIButton *RealVideo,*listen,*Readmat,*Look,*DiveIn;

}
@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
   // Do any additional setup after loading the view, typically from a nib.
    self.view.backgroundColor=[UIColor whiteColor];
    [self designDeclare];
}
-(void)designDeclare{

    RealVideo=[UIButton buttonWithType:UIButtonTypeCustom];
    RealVideo.frame=CGRectMake(10,self.view.frame.size.height*0.2, CGRectGetWidth(self.view.frame)-20, CGRectGetHeight(self.view.frame)/7);
    [RealVideo addTarget:self action:@selector(real:) forControlEvents:UIControlEventTouchUpInside];
    [RealVideo setTitle:@"Real Video" forState:UIControlStateNormal];
    RealVideo.backgroundColor=[UIColor colorWithRed:0.744f green:0.000f blue:0.000f alpha:1.00f];
    [self.view addSubview:RealVideo];

    listen=[UIButton buttonWithType:UIButtonTypeCustom];
    listen.frame=CGRectMake(CGRectGetMinX(RealVideo.frame),CGRectGetMaxY(RealVideo.frame)+20, CGRectGetWidth(RealVideo.frame), CGRectGetHeight(RealVideo.frame));
   // [listen addTarget:self action:@selector(Listen:) forControlEvents:UIControlEventTouchUpInside];
    [listen setTitle:@"Listen" forState:UIControlStateNormal];
    listen.backgroundColor=[UIColor purpleColor];
    [self.view addSubview:listen];

    Readmat=[UIButton buttonWithType:UIButtonTypeCustom];
    Readmat.frame=CGRectMake(CGRectGetMinX(RealVideo.frame),CGRectGetMaxY(listen.frame)+20, CGRectGetWidth(RealVideo.frame), CGRectGetHeight(RealVideo.frame));
   // [Readmat addTarget:self action:@selector(Listen:) forControlEvents:UIControlEventTouchUpInside];
    [Readmat setTitle:@"Reading Material" forState:UIControlStateNormal];
    Readmat.backgroundColor=[UIColor colorWithRed:0.000f green:0.412f blue:0.851f alpha:1.00f];
    [self.view addSubview:Readmat];

    Look=[UIButton buttonWithType:UIButtonTypeCustom];
    Look.frame=CGRectMake(CGRectGetMinX(RealVideo.frame),CGRectGetMaxY(Readmat.frame)+20, CGRectGetWidth(RealVideo.frame), CGRectGetHeight(RealVideo.frame));
    [Look addTarget:self action:@selector(Look) forControlEvents:UIControlEventTouchUpInside];
    [Look setTitle:@"Look" forState:UIControlStateNormal];
    Look.backgroundColor=[UIColor colorWithRed:0.400f green:1.000f blue:0.400f alpha:1.00f];
    [self.view addSubview:Look];

    DiveIn=[UIButton buttonWithType:UIButtonTypeCustom];
    DiveIn.frame=CGRectMake(self.view.frame.size.width*0.7,CGRectGetMaxY(Look.frame)+20, CGRectGetWidth(RealVideo.frame)/4,CGRectGetHeight(RealVideo.frame)/1.5);
    [DiveIn setTitle:@"Dive In" forState:UIControlStateNormal];
    DiveIn.backgroundColor=[UIColor colorWithRed:0.941f green:0.471f blue:0.353f alpha:1.00f];
    [self.view addSubview:DiveIn];

}

-(void)real:(id)sender{



}

-(void)Look{

    InfoView *infoVC=[[InfoView alloc]init];
    [self.navigationController pushViewController:infoVC animated:YES];
}

] 1

Answer 1

导航 Controller 像堆栈一样工作，因此您可以像堆栈在现实世界中的行为一样推送和弹出 View Controller 。将导航 Controller 想象成一堆 View Controller ，因此您实际上不能添加 UIView，但您想要做的是将 uiview 作为 subview 添加到 View Controller 中并推送该 View 使用一个简单的方法将 Controller 添加到导航 Controller 堆栈中:

[navigationcontroller pushViewController:aViewcontroller];

请通读Apple Documentation了解更多信息。