我有一个自定义事件,当移动滑块时调度,但我没有收到我创建的继承调度程序类的事件,而我遵循与
My flash custom event doesn’t trigger的解决方案相同的语法
活动类：
package {
import flash.events.Event;
public class CustomEvent extends Event
{
public static const ON_DISPATCHER_EVENT = "onDispatcherEvent";
public var value:Number;
public function CustomEvent(type:String,bubbles:Boolean=false,cancelable:Boolean=false):void
{
super(type,bubbles,cancelable);
}
}
}
接线员：
package {
import flash.events.EventDispatcher;
import flash.events.Event;
public class CustomEventDispatcher extends EventDispatcher {
private var cEvent: CustomEvent;
public function CustomEventDispatcher() {
}
public function raiseEvent(_value:Number) {
cEvent = new CustomEvent(CustomEvent.ON_DISPATCHER_EVENT);
cEvent.value = _value;
dispatchEvent(cEvent);
}
}
}
测试类：
package {
import flash.display.*;
import flash.net.*;
import flash.events.*;
import fl.events.SliderEvent;
import fl.controls.Slider;
public class TestCustomEvent extends MovieClip {
private var cEvent: CustomEvent;
public function TestCustomEvent() {
addEventListener( Event.ADDED_TO_STAGE,init);
}
public function init( e:Event ):void {
removeEventListener( Event.ADDED_TO_STAGE,init );
this.addEventListener(CustomEvent.ON_DISPATCHER_EVENT,OnDispatcherEvent);
slider.addEventListener(SliderEvent.CHANGE,OnSliderEventChange);
}
public function OnDispatcherEvent(event:CustomEvent): void {
trace(event.value);
}
public function OnSliderEventChange(event:SliderEvent) {
cEvent = new CustomEvent(CustomEvent.ON_DISPATCHER_EVENT);
cEvent.value = event.value;
dispatchEvent(cEvent);
trace("hello");
}
}
}
解决方法
我认为您对事件流程的理解有点偏差.我在
My flash custom event doesn’t trigger中给出的答案(我假设你没有阅读)我认为是使用自定义Event和IEventDispatcher对象的正确方法：
package
{
import flash.display.Sprite;
import flash.events.Event;
public class Main extends Sprite
{
private var _sliderSprite:SliderSprite;
public function Main():void
{
if (stage) init();
else addEventListener(Event.ADDED_TO_STAGE,init);
}// end function
private function init(e:Event = null):void
{
removeEventListener(Event.ADDED_TO_STAGE,init);
_sliderSprite = new SliderSprite();
_sliderSprite.x = (stage.stageWidth / 2);
_sliderSprite.y = (stage.stageHeight / 2);
addChild(_sliderSprite);
}// end function
}// end class
}// end package
import fl.controls.Slider;
import fl.events.SliderEvent;
import flash.display.Sprite;
internal class SliderSprite extends Sprite
{
private var _slider:Slider;
public function SliderSprite()
{
init();
}// end function
private function init():void
{
_slider = new Slider();
addChild(_slider);
_slider.addEventListener(SliderEvent.CHANGE,onSliderChange);
addEventListener(CustomEvent.CUSTOM_EVENT_TYPE,onSliderSpriteCustomEventType);
}// end function
private function onSliderSpriteCustomEventType(e:CustomEvent):void
{
trace(e.value);
}// end function
private function onSliderChange(e:SliderEvent):void
{
dispatchEvent(new CustomEvent(CustomEvent.CUSTOM_EVENT_TYPE,e.value));
}// end function
}// end class
import flash.events.Event;
internal class CustomEvent extends Event
{
public static const CUSTOM_EVENT_TYPE:String = "customEventType";
private var _value:Number;
public function get value():Number
{
return _value;
}// end function
public function CustomEvent(type:String,value:Number,bubbles:Boolean = false,cancelable:Boolean = false)
{
_value = value;
super(type,cancelable);
}// end function
override public function clone():Event
{
return new CustomEvent(type,value,cancelable);
}// end function
}// end class
[UPDATE]
[编辑08/04/2011 08:22]
我修改了代码以封装所有涉及调度和侦听事件的代码,以及将事件处理程序排除到另一个类(EventDispatcherManager).
import flash.display.Sprite;
import flash.events.IEventDispatcher;
internal class SliderSprite extends Sprite
{
private var _slider:Slider;
private var _eventDispatcherManager:EventDispatcherManager;
public function SliderSprite()
{
init();
}// end function
private function init():void
{
_slider = new Slider();
addChild(_slider);
_eventDispatcherManager = new EventDispatcherManager(IEventDispatcher(_slider));
}// end function
}// end class
import fl.controls.Slider;
import fl.events.SliderEvent;
import flash.events.EventDispatcher;
internal class EventDispatcherManager extends EventDispatcher
{
public function EventDispatcherManager(slider:IEventDispatcher)
{
slider.addEventListener(SliderEvent.CHANGE,onSliderChange);
this.addEventListener(CustomEvent.CUSTOM_EVENT_TYPE,onCustomEventType);
}// end function
private function onSliderChange(e:SliderEvent):void
{
this.dispatchEvent(new CustomEvent(CustomEvent.CUSTOM_EVENT_TYPE,e.value));
}// end function
private function onCustomEventType(e:CustomEvent):void
{
trace(e.value);
}// end function
}// end function
