iphone - Subclass of NSObject as target in addEventListener statement -

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When setting the method of a button call or adding an event listener to the objective-c, The goal determines although I have NSObject named call , which is a sub-section different than the main file. In this subclass, a zero called METHOD_NAME , which should be executed.

The first question is that there will be METHOD_NAME in zero + (zero) METHOD_NAME

or

- (zero) subdivision.

Next how do I set the goal of using the addEventListener subclass of NSObject and call the method inside it? Do i

target: [call square];

Or would I like to make an example of the subclass of NSObject (call) and then pass it?

  • "call" and "METHOD_NAME" a good name for class and method Are not there. Try to follow the objective-conventions. Since you are "nononso", you can make some calls to your class such as NNEventListener and method buttonTapped , for example.

  • The first question: It really does not matter that both class methods (+) and example methods can be used. However , using an example method to listen to UI events will be very unusual for not , so the answer is, click the - (zero) button addEventListener . Where did you hear of that? Are you already using the web framework to create an app?

One button (or any other UIControl code>), you use -addTarget: action: forControlEvents: For the context that you want to be called, you use these special @selector directives: 

  [One button addTarget: One object Action: @Selector (Button Tap) Control Events: UI ControlView Touchup Inside];

aButton - your button anObject - an object self is the only object that you have buttonTapped - any object in the object can give the name of the method that should be called when the button is tapped


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