I have two UIbuttons, and I want to assign the two buttons to a UITextView so that when one of the buttons is pressed, the text vie开发者_C百科w content changes from what it had when previous button w
When coding with cocoa I\'ve noticed that it\'s not necessary to have sender parameter when defining IBAction, hence following action:
I\'m using a NSOperation to handle background processing in an iOS app, and I\'m trying to understand the target/action pattern. In the delegate pattern, the delegate is held as a weak reference, and
MyNSImageView is a subclass of NSImageView, here I have: @interface MyNSImageView : NSImageView { } @end
I want to disable the default action when user taps the tabbar item. For example, i have a tabbar with Tab1, Tab2 and Tab3. In Tab1, user can navigate from View1 to View3 (View1 > View2 > View3). If
I have come across this Cocoa application (source code) that shows a main Window. As long as this window is key it is possible to open the Preferences window from the Main menu as well as by hitting
开发者_如何学JAVAThe Apple documentation says that the sender passed to the NSMenuItem\'s action can be set to some custom object, but I can\'t seem to figure out how to do this. Is there a method I\'
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