AS3 mp3数组中的对象并检索和播放它们有助于AS3的新功能

Question

嗨，我是as3的新手，我不确定我是否正确写作。

我有10个声音变量链接到mp3。 我也有一首歌。 我有10个按钮将mp3推入阵列 并且播放按钮只是跟踪songArray，但我不知道如何继续并且能够按照他们输入阵列的相同顺序播放mp3。

package {

import C1.mp3;
import C2.mp3;
import C3.mp3;
import C4.mp3;
import C5.mp3;
import C6.mp3;
import C7.mp3;
import C8.mp3;
import C9.mp3;
import C10.mp3;

import flash.display.Sprite;
import flash.display.StageAlign;
import flash.display.StageScaleMode;
import flash.events.MouseEvent;
import flash.media.Sound;


public class Main extends Sprite {



    private var master:Master = new Master();

    private var sound2:Sound = new C2.mp3();
    private var sound3:Sound = new C3.mp3();
    private var sound4:Sound = new C4.mp3();
    private var sound5:Sound = new C5.mp3();
    private var sound6:Sound = new C6.mp3();
    private var sound7:Sound = new C7.mp3();
    private var sound8:Sound = new C8.mp3();
    private var sound9:Sound = new C9.mp3();
    private var sound10:Sound = new C10.mp3();

    private var soundArray:Array = [];

    public function Main() {

        stage.scaleMode = StageScaleMode.NO_SCALE;
        stage.align = StageAlign.TOP_LEFT;
        init();

    }

    private function init():void {
        addChild(master);

        master.btn1.btnText.text = "A";
        master.btn2.btnText.text = "2";
        master.btn3.btnText.text = "3";
        master.btn4.btnText.text = "4";
        master.btn5.btnText.text = "5";
        master.btn6.btnText.text = "6";
        master.btn7.btnText.text = "7";
        master.btn8.btnText.text = "8";
        master.btn9.btnText.text = "9";
        master.btn10.btnText.text = "10";

        master.btn1.addEventListener(MouseEvent.CLICK, btnClicked);
        master.btn2.addEventListener(MouseEvent.CLICK, btnClicked);
        master.btn3.addEventListener(MouseEvent.CLICK, btnClicked);
        master.btn4.addEventListener(MouseEvent.CLICK, btnClicked);
        master.btn5.addEventListener(MouseEvent.CLICK, btnClicked);
        master.btn6.addEventListener(MouseEvent.CLICK, btnClicked);
        master.btn7.addEventListener(MouseEvent.CLICK, btnClicked);
        master.btn8.addEventListener(MouseEvent.CLICK, btnClicked);
        master.btn9.addEventListener(MouseEvent.CLICK, btnClicked);
        master.btn10.addEventListener(MouseEvent.CLICK, btnClicked);

        master.clearBtn.addEventListener(MouseEvent.CLICK, btnClicked);
        master.playBtn.addEventListener(MouseEvent.CLICK, btnClicked);

    }

    private function btnClicked(event:MouseEvent):void {

        switch (event.currentTarget.name){

            case "btn1":
                trace("1");
                    //sound1.play();
                    soundArray.push(sound1);
                break;

            case "btn2":
                trace("2");
                    //sound2.play();
                    soundArray.push(sound2);
                break;

            case "btn3":
                trace("3");
                    soundArray.push(sound3);
                break;

            case "btn4":
                trace("4");
                    soundArray.push(sound4);
                break;

            case "btn5":
                trace("5");
                    soundArray.push(sound5);
                break;

            case "btn6":
                trace("6");
                    soundArray.push(sound6);
                break;

            case "btn7":
                trace("7");
                    soundArray.push(sound7);
                break;

            case "btn8":
                trace("8");
                    soundArray.push(sound8);
                break;

            case "btn9":
                trace("9");
                    soundArray.push(sound9);
                break;

            case "btn10":
                trace("10");
                    soundArray.push(sound10);
                break;

        }

    }

    private function clearHandler():void {
        // Clean the soundArray back to empty.
        soundArray.splice(0);

    }

    private function playHandler():void{

        trace(soundArray);
    }



}
}

Answer 1

代码清理

1. 先将声音推送到数组，然后新建一个Dictionary，新建一个Vector播放列表。

   private var soundArray:Array = [ null, sound1, sound2, sound3, sound4, sound5, sound6, sound7, sound8, sound9, sound10 ];
   private var soundDic:Dictionary = new Dictionary;
   private var playList:Vector.<Sound> = new Vector.<Sound>;
   
   private static const MAX_BTN_NUM:uint = 10;
   

2. 使用for loop初始化。

       for(var i:int = 1; i <= MAX_BTN_NUM; i++)
       {
           master["btn"+i].btnText.text = i+"";
           master["btn"+i].addEventListener(MouseEvent.CLICK, btnClicked);
           soundDic["btn"+i] = soundArray[i];
       }
   

3. 将key-value用于btnClicked。

   private function btnClicked(event:MouseEvent):void {
       playList.push( soundDic[event.currentTarget.name] );
   }
   

逐一播放

1. 为int

   初始化clearInterval

   private var tidx:int = -1;
   

2. 逐一播放逻辑

   private function playOneByOne( sounds:Vector.<Sound>, idx:uint = 0 ):void{
       clearInterval( tidx );
       if( idx < sounds.length ){
           (sounds[idx] as Sound).play();
           tidx = setInterval( playOneByOne, (sounds[idx] as Sound).length, sounds, idx + 1 );
       }
   }
   

处理播放和清除

    private function clearHandler( event:MouseEvent ):void {
        playList.splice( 0, playList.length );
    }

    private function playHandler( event:MouseEvent ):void{
        playOneByOne( playList );
    }