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I am following the motioncasts screencast at: http://motioncasts.tv/start-building-views-in-rubymotion/

And there is some code:

button = UIButton.buttonWithType(UIButtonTypeRoundedRect)
button.frame = [[15, 300], [280,50]]
button.setTitle("Move to next view", forState: UIControlStateNormal)
button.addTarget(self,
                 action: "moveToChildView:",
                 formControlEvents: UIControlEventTouchUpInside)

Which is supposed to work, but when trying to compile produces the error:

(main)> 2013-04-18 18:41:06.205 12wbt[76267:c07] home_controller.rb:19:in `viewDidLoad': undefined method `addTarget' for #<UIRoundedRectButton:0x761fd40> (NoMethodError)
    from app_delegate.rb:6:in `application:didFinishLaunchingWithOptions:'
2013-04-18 18:41:06.208 12wbt[76267:c07] *** Terminating app due to uncaught exception 'NoMethodError', reason: 'home_controller.rb:19:in `viewDidLoad': undefined method `addTarget' for #<UIRoundedRectButton:0x761fd40> (NoMethodError)
    from app_delegate.rb:6:in `application:didFinishLaunchingWithOptions:'
'

As far as I can tell, this is the exact code from the screencast which is supposed to work without error. What is wrong?

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1 回答 1

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问题解决了。最后一行应该是forControlEvents，而不是formControlEvents。

于 2013-04-18T09:23:03.047 回答