打开按钮点击新视图

Question

我有一个名为diffView的导航为基础的应用程序，并在其中我想打开新的按钮点击视图。为此，创建了一个名为next1的文件新文件 - 可可触摸类UIViewControllerSubclass。

在diffViewAppDelegate.h我写的

IBOutlet UIButton *btn1; 
@property (nonatomic,retain) UIButton *btn1; 
-(IBAction)buttonPressed:(id)sender; 

和diffViewAppDelegate.m-

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {  

    CGRect bounds=window.bounds; 
    UIView* view=[[UIView alloc]initWithFrame:bounds]; 
    [view setBackgroundColor:[UIColor redColor]]; 
    [window addSubview:view]; 

    CGRect buttonFrame= CGRectMake(80, 240, 200, 30); 
    btn1=[[UIButton alloc] initWithFrame:buttonFrame]; 
    [btn1 setTitle:@"space" forState:UIControlStateNormal]; 
    [btn1.titleLabel setFont:[UIFont fontWithName:@"Verdana" size:20]]; 
    [btn1 addTarget:self action:@selector(buttonPressed:) forControlEvents:UIControlEventTouchDown]; 
    [view addSubview:btn1]; 

    [self.window makeKeyAndVisible]; 

    return YES; 
} 

    -(IBAction)buttonPressed:(id)sender 
{ 

    next1 * nxt=[[next1 alloc] initWithNibName:nil bundle:nil]; 
    [self.navigationController pushViewController:nxt animated:YES]; 
    [nxt release]; 
} 

我没有得到任何错误，但是当我按一下按钮没有任何反应。

请给我任何解决方案。

Answer 1

我如何把它想象：

1. 在你的委托加载 - 分配/初始化的UINaviagationController并设置其属性RootViewController的或只是使用initWithRootViewController:方法，当你初始化的NavigationController。类似的东西。

   viewController = [RootViewController alloc] init]; 
   nvc = [[UINavigationController alloc] initWithRootViewController:viewController]; 
   nvc.navigationBarHidden = YES; 
   [self.window setRootViewController:nvc]; 
   [window makeKeyAndVisible]; 
   

2. 在你RootViewController的，从“viewDidLoad中：”你的方法创建按钮，并把它添加到以后您实现目标选择，一切都会好起来的“self.view”。

编辑1：

这是我application:didFinishLaunchingWithOptions:方法在我的AppDelegate

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

    self.navigationController = [[UINavigationController alloc] initWithRootViewController:self.viewController]; 

    self.window.rootViewController = self.navigationController; 
    [self.window makeKeyAndVisible]; 
    return YES; 
} 

这是我的RootViewController的

#import "ViewController.h" 

@interface ViewController() 

@end 

@implementation ViewController 

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


    CGRect buttonFrame= CGRectMake(80, 240, 200, 30); 
    UIButton *btn1=[[UIButton alloc] initWithFrame:buttonFrame]; 
    btn1.backgroundColor = [UIColor greenColor]; 
    [btn1 setTitle:@"space" forState:UIControlStateNormal]; 
    [btn1.titleLabel setFont:[UIFont fontWithName:@"Verdana" size:20]]; 
    [btn1 addTarget:self action:@selector(buttonPressed:) forControlEvents:UIControlEventTouchUpInside]; 
    [self.view addSubview:btn1]; 

} 

- (void)didReceiveMemoryWarning 
{ 
    [super didReceiveMemoryWarning]; 
    // Dispose of any resources that can be recreated. 
} 


- (void)buttonPressed:(id)sender 
{ 
    NSLog(@"sender: %@", sender); 
} 

@end 

Answer 2

是的，我已经在RootViewController的，但其产生的按钮不工作。即使按钮现在不可见。我的代码是这样的 -

CGRect buttonFrame= CGRectMake(80, 240, 200, 30); 
btn1=[[UIButton alloc] initWithFrame:buttonFrame]; 
[btn1 setTitle:@"space" forState:UIControlStateNormal]; 
[btn1.titleLabel setFont:[UIFont fontWithName:@"Verdana" size:20]]; 
[btn1 addTarget:self action:@selector(buttonPressed:) forControlEvents:UIControlEventTouchDown]; 
[self.view addSubview:btn1];