Question

我第一次在RubyMotion中尝试一个简单的应用程序。我只是希望能够点击按钮，然后启动UINavigationController

步骤： - 用户按下按钮 - 屏幕向左移动并开始新导航

如果我从第一个视图本身开始导航，但我希望能够在按钮按下时启动它，我可以做得很好。

这是我到目前为止所拥有的

的AppDelegate：

#below commented line starts the navigation from the first view
#navController = UINavigationController.alloc.initWithRootViewController(HomeController.alloc.init)
@window.rootViewController = HomeController.alloc.init
true

HomeController中：

  def viewDidLoad
    self.title = "ONE"
    button = UIButton.buttonWithType(UIButtonTypeRoundedRect)
    button.frame = [[15,300], [280,50]]
    button.setTitle("Move to next view", forState: UIControlStateNormal)
    button.addTarget(self, 
                     action: "startNavigationOne:",
                     forControlEvents: UIControlEventTouchUpInside)

    view.addSubview(button)
  end

  def startNavigationOne (sender)
   #what can I do here to start the navigation?

端

Answer 1

创建appliation基于导航的应用程序使用appDelegate.m文件中的以下3个步骤

步骤1：首先创建一个RootViewController

ViewController *rootViewController = [[ViewController alloc] initWithNibName:@"ViewController" bundle:nil];

步骤2：使用RootviewController创建导航控制器

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

步骤3：将导航控制器添加到Window的Root ViewController

self.window.rootViewController = self.navController;

现在导航开启按钮点击此处

创建要推送/导航的viewController对象

ViewController *startNavigationOne = [[ViewController alloc] initWithNibName:@"ViewController" bundle:nil];

使用导航控制器推送该视图

[self.navController pushViewController:startNavigationOne animated:YES];

Answer 2

尚未测试此代码并从内存中写入，但它应该可以正常工作。

def startNavigationOne (sender)
  # Create your next controller and its navigation controller
  next_controller = UIViewController.alloc.initWithNibname(nil, bundle: nil)
  nav = UINavigationController.alloc.initWithRootViewController(next_controller)

  # Now set it as the root view controller
  UIApplication.sharedApplication.delegate.window.rootViewController = nav

  # The current UIViewController will be deallocated when this method exits
end

如何在rubymotion中按下按钮后启动NavigationController

2 个答案: