我有一个控制器和一个按钮。单击该按钮时,我想显示UIAlertView
。我无法工作的是UIBarButtonItem
的操作参数。
在我的控制器中
class TapController < UIViewController
def alert
alert = UIAlertView.new
alert.message = "It's working"
alert.show
end
def viewDidLoad
super
self.view.backgroundColor = UIColor.whiteColor
right_button = UIBarButtonItem.alloc.initWithTitle("Go Deeper",
style:UIBarButtonItemStyleBordered,
target:self,
action:'alert')
self.navigationItem.rightBarButtonItem = right_button
end
end
我的app/app_delegate.rb
:
class AppDelegate
def application(application, didFinishLaunchingWithOptions:launchOptions)
#UIScreen is the display the app runs on
@window = UIWindow.new.initWithFrame(UIScreen.mainScreen.bounds)
@window.makeKeyAndVisible
controller = TapController.alloc.initWithNibName(nil, bundle: nil)
@window.rootViewController = UINavigationController.alloc.initWithRootViewController(controller)
true
end
end
所以它很简单,但是UIBarButtonItem的目标或动作属性不能按预期工作。
答案 0 :(得分:1)
这是你的问题。在您的应用代理中,您需要在alloc
上拨打new
而不是UIWindow
。
@window = UIWindow.alloc.initWithFrame(UIScreen.mainScreen.bounds)