Can someone please explain me this common mistake? (using the wrong binding event name)

Question

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Using the wrong event name in the [Bindable] Tag can result in an application that does not bind your property, and you don’t even know why. when you use the [Bindable] tag with a custom name, the example below looks like a good idea:

public static const EVENT_CHANGED_CONST:String = "eventChangedConst"; 
private var _number:Number = 0; 
[Bindable(event=EVENT_CHANGED_CONST)] 
public function get number():Number 
{ 
  return _number; 
} 
public function set number(value:Number) : void 
{ 
  _number = value; 
  dispatchEvent(new Event(EVENT_CHANGED_CONST)); 
}

In the above code, a static property is set to the event name, and then it uses the same task to send the event. However, when the value changes, the binding does not appear to work. The reason is that the event name will be EVENT_CHANGED_CONST and not the value of the variable.

The code should be written as follows:

public static const EVENT_CHANGED_CONST:String = "eventChangedConst"; 
private var _number:Number = 0; 
[Bindable(event="eventChangedConst")] 
public function get number():Number 
{ 
  return _number; 
} 
public function set number(value:Number) : void 
{ 
  _number = value; 
  dispatchEvent(new Event(EVENT_CHANGED_CONST)); 
}

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Answer 1

Flex , ! .

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, , Adobe JIRA, , 4.5 .