as3 addEventListner在另一個類的函數上

Question

我有一個類在另一個類中調用一個函數。 我想知道我們是否可以添加一個事件監聽器來知道該函數是否已觸發並已完成等。

以下是相關代碼的部分。

myMC = new pictures(); 
addChild(myMC);
myMC.loadImages("Joyful",1)
// Add Event Listener here to let me know loadImages was called and worked. 

正如您所看到的，該函數稱為loadImages（），它位於名為pictures.as的類中

我可以為此添加事件監聽器嗎？

這是一個新問題。 我使用類似的方法，我使用下面的例子，它沒有用。 我錯過了一個導入或什么？ 我只顯示相關的功能，而不是我的整個腳本。

Main.class包{

import flash.display.MovieClip;
import flash.events.*;
import flash.display.*;
import flash.filesystem.*;
import com.greensock.*;
import com.greensock.easing.*;
import flash.system.System;

// Ed's Scripts
import com.*;
import com.views.*;


public class iRosaryMain extends MovieClip
{

    /// (Get Main Doc flow) this creates an instace of the main timeline
    /// and then I send it 
    private static var _instance:iRosaryMain;
    public static function get instance():iRosaryMain
    {
        return _instance;
    }

    /// Declaring Vars
    var audio:audioPrayers;

    /// Loading Images
    //public var theImages:pictures = new pictures();

    /// Movie Clips
    public var myMary:beautifulMary;
    public var myMC:MovieClip;
    public var myPic:MovieClip;
    public var myFlags:MovieClip;
    public static var mt:MovieClip;



    var vars:defaultVars = new defaultVars();



    public function iRosaryMain()
    {
        // (Get Main Doc flow) Here I send the an instacne of iRosaryMain to defaultVars.as
        _instance = this;
        vars.getMainDoc(_instance);

        // Sets timeline to mt :) I hope
        mt = _instance;

        audio = new audioPrayers();
        trace("Jesus I trust in you!");// constructor code
        audio.sayHailMary();
        if (stage)
        {
            init();


        }
    }


    public function moveLanguages()
    {

        /// File to languages folder
        var checkLanguageFolder:File = File.applicationStorageDirectory.resolvePath("Languages");

        ///// CHECK LANGUAGES FOLDER - if not in App Storage move it
        if (! checkLanguageFolder.exists)
        {
            var sourceDir:File = File.applicationDirectory.resolvePath("Languages");
            var resultDir:File = File.applicationStorageDirectory.resolvePath("Languages");
            sourceDir.copyTo(resultDir, true);
            trace( "Moved Language!");
        }
    }


    //// MAIN FUNCTIONS IN iRosaryMainClass
    function init()
    {



        //loadFlags();
        moveLanguages();
        //addChild(theImages);
        intro();

    }


    public function loadFlags()
    {
        myFlags.addEventListener("MyEvent", eventHandler);
        myFlags = new viewLanguages();

        addChild(myFlags);
        myFlags.x = stage.stageWidth / 2 - myFlags.getBounds(this).width / 2;

        function eventHandler()
        {
            trace("yes loaded");
            TweenMax.fromTo(myMary,3, {alpha:1}, {alpha:0, ease:Quint.easeOut,  onComplete: closePic} );
        }
    }

    function intro()
    {

        myMary = new beautifulMary();
        addChild(myMary);
        loadFlags();
    }



    public function closePic()
    {
        removeChild(myMary);
    }



    public function languageLoaded(lang:String)
    {
        trace("YES... " + lang);
        homeIn();
    }


    public function homeIn()
    {
        if (myFlags)
        {
            TweenMax.fromTo(myFlags,1, {x:myFlags.x}, {x:0-myFlags.width, ease:Quint.easeInOut, onComplete:unloadMyFlags} );
        }

        function unloadMyFlags()
        {
            trace("Called Ease out");
            if (myFlags is MovieClip)
            {
                //trace("CURRENT DISPLAY " + currentDisplayScreen);
                trace("CURRENT mc " + myFlags);
                removeChild(myFlags);
                System.gc();
                myFlags = null;
                trace("CURRENT mc " + myFlags);

            }

        }

        if (! myMC)
        {
            myMC = new viewHome();
            myMC.name = "Home";
            myMC.x = stage.stageWidth / 2 - myMC.width / 2;
            addChild(myMC);
        }

        theEaseIn(myMC);
        //Home.B1.addEventListener(MouseEvent.CLICK, theEaseOut(Home));
    }


    public function loadLanguage(Language:String):Function
    {
        return function(e:MouseEvent):void ;
        {
            trace("Did it work? " +Language);
            vars.loadButtonVars(Language);;
        };

        //TweenMax.fromTo(EnglishButton,1, {x:EnglishButton.x}, {x:0-EnglishButton.width, ease:Quint.easeOut} ); 
    }


    public function loadView(screen:String)
    {

        trace("Received  " + screen);
        if (screen=="Home")
        {
            myMC = new viewHome();
            addChild(myMC);
            theEaseIn(myMC);
            //Home.B1.addEventListener(MouseEvent.CLICK, theEaseOut(Home));
        }
        if (screen=="PrayTheRosary")
        {
            myMC = new viewPrayTheRosary();
            addChild(myMC);
            theEaseIn(myMC);
            //Home.B1.addEventListener(MouseEvent.CLICK, theEaseOut(Home));
        }
        if (screen=="Options")
        {
            myMC = new viewOptions();
            addChild(myMC);
            theEaseIn(myMC);
        }
        if (screen=="Downloads")
        {
            myMC = new viewDownloads();
            addChild(myMC);
            theEaseIn(myMC);
        }
        if (screen=="beautifulMary")
        {
            myMC = new beautifulMary();
            addChild(myMC);
            theEaseIn(myMC);
        }
        if (screen=="Flags")
        {
            myFlags = new viewLanguages();
            addChild(myFlags);
            theEaseIn(myFlags);
        }
        if (screen=="Joyful" || screen=="Sorrowful" || screen=="Glorious" || screen=="Luminous")
        {
            myPic = new pictures();
            addChild(myPic);
            myPic.addEventListener( "ImagesLoaded",  doTheEaseIn);
            myPic.loadImages(""+screen+"",1);
            function doTheEaseIn()
            {
                theEaseIn(myPic);
            }
        }

    }



    public function theEaseIn(mc:MovieClip)
    {
        if (myMC)
        {
            TweenMax.fromTo(mc,1, {x:stage.stageWidth+mc.width}, {x:stage.stageWidth/2 - mc.width/2, ease:Quint.easeInOut} );


        }
    }

    public function theEaseOut(mc:MovieClip,nextMC:String):Function
    {
        return function(e:MouseEvent):void ;
        {
            loadView(nextMC);
            /// Tweens out view on screen
            TweenMax.fromTo(mc,1, {x:mc.x}, {x:0-mc.width, ease:Quint.easeInOut, onComplete:unloadMC} );
            function unloadMC();
            {
                trace("Called Ease out");
                if(mc is MovieClip);
                {
                    //trace("CURRENT DISPLAY " + currentDisplayScreen);
                    trace("CURRENT mc " + mc);
                    removeChild(mc);
                    System.gc();
                    myMC = null;
                    trace("CURRENT mc " + mc);

                };

            };
        };/// end return
    }




    ////////////
}/// End iRosaryMain

} //結束包

viewLanguages.as

包com.views

package com.views
{

    import flash.display.MovieClip;
    import flash.filesystem.File;
    import com.roundFlag;
    import flash.events.*;
    import flash.display.*;


    public class viewLanguages extends MovieClip
    {

        var Flag:MovieClip;
        //public static const FLAGS_LOADED:String = "flagsLoaded"; 
        public function viewLanguages()
        {
            getLang();
        }


        function numCheck(num:int):Boolean
        {
            return (num % 2 != 0);
        }
        /// Get for App Opening
        public function getLang()
        {
            /// When Live
            var folderLanguages:File = File.applicationStorageDirectory.resolvePath("Languages");
            var availLang = folderLanguages.getDirectoryListing();
            var Lang = new Array();
            var LangPath = new Array();
            var fl:int = 0;
            for (var i:uint = 0; i < availLang.length; i++)
            {

                if (availLang[i].isDirectory)
                {
                    //flag = new Loader();
                    //flag.load(new URLRequest(File.applicationStorageDirectory.url + "Languages/" + Lang[i] + "/roundFlag.png"));


                    Lang.push(availLang[i].name);
                    LangPath.push(availLang[i].nativePath);
                    Flag = new roundFlag(availLang[i].name);
                    Flag.name = availLang[i].name;

                    if (numCheck(i)==false)
                    {
                        Flag.y = fl;
                        Flag.x = 0;

                    }
                    else
                    {
                        Flag.y = fl;
                        Flag.x = Flag.width + 33;
                        fl = fl + Flag.height + 33;
                    }

                    Flag.btext.text = availLang[i].name;
                    addChild(Flag);


                    trace(availLang[i].nativePath);// gets the name
                    trace(availLang[i].name);

                }
            }
            trace("Get Lang Called");
            dispatchEvent(new Event("MyEvent"));
        }



    }

}

Answer 1

是的你可以。 考慮到您要將剪輯添加到顯示列表中，我假設它擴展了Movieclip或Sprite，兩者都擴展了EventDispatcher。 在你的圖片類中，你可以簡單地使用dispatchEvent(new Event("MyEvent");來調度一個事件。然后你可以添加myMC.addEventListener("MyEvent", eventHandler);來對它作出反應。

您也不應該像我上面寫的那樣使用字符串。 如果你聲明一個public static const IMAGES_LOADED:String = "imagesLoaded";會更好public static const IMAGES_LOADED:String = "imagesLoaded"; 在你的圖片課上。 然后你應該通過調度和聽取它來使用這個常量。

編輯：這里的常量如何：

//your class
package {

    import flash.events.Event;
    import flash.display.Sprite;

    public class Pictures extends Sprite {

        public static const IMAGES_LOADED:String = "imagesLoaded"; 

        public function Pictures() {

        }

        public function onAllImagesLoaded():void {
            dispatchEvent(new Event(IMAGES_LOADED));
        }
        //rest of your methods
    }
}

//you would call it like this:
var myMc:Pictures = new Pictures();
myMc.addEventListener(Pictures.IMAGES_LOADED, onImagesLoaded);
myMc.loadImages();

function onImagesLoaded(e:Event):void {
    //...etc
}

Answer 2

您必須為此創建自定義事件類才能工作。 喜歡：

package com.some
{

    import flash.events.Event;

    public class SomeEvent extends Event
    {

        // Loading events
        public static const MAINDATA_LOADING:String = "onMainDataLoading";
        // Other event
        public static const SOME_LOADING:String = "onSomeLoading";      


        public var params:Object;

        public function SomeEvent($type:String, $params:Object, $bubbles:Boolean = false, $cancelable:Boolean = false)
        {
            super($type, $bubbles, $cancelable);
            this.params = $params;
        }

        public override function clone():Event
        {
            return new SomeEvent(type, this.params, bubbles, cancelable);
        }

    }

}

在想要的類（圖片）中添加事件調度，並將想要的參數傳遞給事件（此或其他）

dispatchEvent(new SomeEvent(SomeEvent.IMAGES_LOADED, this));

處理事件監聽：

var myMc:Pictures = new Pictures();
myMc.addEventListener(SomeEvent.IMAGES_LOADED, onImagesLoaded);
myMc.loadImages();

function onImagesLoaded(e:SomeEvent):void {
   // handle event.
   var picts:Pictures = (e.params as Pictures);
}