純AS3.0代碼寫的一個簡易音樂播放器

王咸美 2013-12-24

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純AS3.0代碼寫的一個簡易音樂播放器

剛學(xué)AS不久,花了一天做的播放器,不足之處,望大師們指點!代碼可能有些亂,和我一樣的新手耐心點看哦!(在sound文件夾里面放四首歌,名字改對,就可以運行了)!

package {
import flash.display.Loader;
import flash.display.Sprite;
import flash.events.Event;
import flash.events.MouseEvent;
import flash.media.Sound;
import flash.media.SoundChannel;
import flash.net.URLLoader;
import flash.net.URLRequest;
import flash.text.TextField;
public class PlayMain extends Sprite {
var num:uint;//xml歌曲個數(shù)
var pausePosition:int;//播放到的地方
var currentIndex:int=0;//當(dāng)前播放第幾首歌,默認(rèn)為第一首
var loadtxt:TextField=new TextField();//播放進度值監(jiān)聽文本
var soundchannel:SoundChannel=new SoundChannel();
var frame:Sprite=getLoad(290,2,0x2255aa);//播放進度中間的那根條
var loadrect:Sprite=getLoad(2,8,0x009900);//播放進度小方塊
var currentPlay:TextField=new TextField();//當(dāng)前播放歌曲
//創(chuàng)建數(shù)組存儲歌曲列表信息
var songListArray:Array=new Array();
//創(chuàng)建按鈕數(shù)組存儲按鈕
var buttonArray:Array=new Array();
//創(chuàng)建按鈕文本數(shù)組
var txtArray:Array=new Array();
//創(chuàng)建數(shù)組存儲聲音對象
var soundArray:Array=new Array();
//創(chuàng)建數(shù)組存儲聲道對象
var channelArray:Array=new Array();
//構(gòu)造函數(shù)
public function PlayMain() {
init();
}
//初始化,加載XML數(shù)據(jù)
private function init():void {
//當(dāng)前播放歌曲文本
addChild(currentPlay);
currentPlay.x=60;
currentPlay.y=60;
currentPlay.width=200;
currentPlay.text="沒有歌曲正在播放";
//創(chuàng)建歌曲列表顯示文本
for(var a:int=0;a<4;a++){
var songtext:TextField=new TextField();
songtext.selectable=false;
songtext.width=200;
songtext.textColor=0xff0000;
addChild(songtext);
songtext.x=400;
songtext.y=20+a*20;
songListArray.push(songtext);
}
//創(chuàng)建按鈕
for(var j:int=0;j<5;j++){
var sp:Sprite=getButton();
addChild(sp);
sp.x=j*60+50;
sp.y=200;
buttonArray.push(sp);
}
//創(chuàng)建文本
for(var m:int=0;m<5;m++){
var txt:TextField=new TextField();
txtArray.push(txt);
}
//給文本賦值
txtArray[0].text="播放";
txtArray[1].text="暫停";
txtArray[2].text="停止";
txtArray[3].text="上一曲";
txtArray[4].text="下一曲";
//顯示文本到按鈕
for(var i:int=0;i<5;i++){
txtArray[i].selectable=false;
buttonArray[i].addChild(txtArray[i]);
}
//顯示播放進度文本到舞臺
stage.addChild(loadtxt);
loadtxt.x=230;
loadtxt.y=100;
//顯示進度條到舞臺
stage.addChild(frame);
frame.x=50;
frame.y=130;
stage.addChild(loadrect);
loadrect.x=50;
loadrect.y=127;
//填充數(shù)組
for(var b:int=0;b<4;b++){
var sound:Sound=new Sound();
var soundchannel:SoundChannel=new SoundChannel();
soundArray.push(sound);
channelArray.push(soundchannel);
}
var xmlLoader:URLLoader=new URLLoader();
xmlLoader.addEventListener(Event.COMPLETE,xmlComplete);
xmlLoader.load(new URLRequest("xml/data.xml"));
}
//xml數(shù)據(jù)加載完成函數(shù)
private function xmlComplete(evt:Event):void {
var _xml:XML=new XML(evt.target.data);
trace(_xml);
num=_xml.item.length();
for(var i:uint=0;i<num;i++){
var soundurl:String=_xml.item[i].@url;//音樂路徑
trace(soundurl);
songListArray[i].text=soundurl.substring(6);
//加載音樂
soundArray[i].load(new URLRequest(soundurl));
soundArray[i].addEventListener(Event.COMPLETE,soundComplete);
}
}
//注冊偵聽
private function soundComplete(evt:Event):void{
trace("加載完成,請欣賞!..");
buttonArray[0].addEventListener(MouseEvent.CLICK,onPlay);
buttonArray[1].addEventListener(MouseEvent.CLICK,onPause);
buttonArray[2].addEventListener(MouseEvent.CLICK,onStop);
buttonArray[3].addEventListener(MouseEvent.CLICK,onPre);
buttonArray[4].addEventListener(MouseEvent.CLICK,onNext);
addEventListener(Event.ENTER_FRAME,onLoad);
}
//播放
private function onPlay(evt:MouseEvent):void{
trace("正在播放索引為"+currentIndex+"的歌曲");
currentPlay.text="正在播放: "+songListArray[currentIndex].text;
songListArray[currentIndex].textColor=0x00ff00;
channelArray[currentIndex]=soundArray[currentIndex].play(pausePosition);
}
//暫停
private function onPause(evt:MouseEvent):void{
pausePosition=channelArray[currentIndex].position;
channelArray[currentIndex].stop();
trace("索引為"+currentIndex+"的歌曲暫停播放");
}
//停止
private function onStop(evt:MouseEvent):void{
channelArray[currentIndex].stop();
pausePosition=0;
trace("索引為"+currentIndex+"的歌曲停止播放");
}
//上一曲
private function onPre(evt:MouseEvent):void{
channelArray[currentIndex].stop();//停止現(xiàn)在歌曲的播放
songListArray[currentIndex].textColor=0xff0000;
currentIndex--;
if(currentIndex>=0){
channelArray[currentIndex]=soundArray[currentIndex].play();//播放下一曲
trace("您操作了上一曲,現(xiàn)在播放索引為"+currentIndex+"的歌曲");
}else{
currentIndex=3;
channelArray[currentIndex]=soundArray[currentIndex].play();
trace("您操作了上一曲,現(xiàn)在播放索引為"+currentIndex+"的歌曲");
}
currentPlay.text="正在播放:"+songListArray[currentIndex].text;
songListArray[currentIndex].textColor=0x00ff00;
}
//下一曲
private function onNext(evt:MouseEvent):void{
channelArray[currentIndex].stop();
songListArray[currentIndex].textColor=0xff0000;
currentIndex++;
if(currentIndex>3){
currentIndex=0;
channelArray[currentIndex]=soundArray[currentIndex].play();
trace("您操作了下一曲,現(xiàn)在播放索引為"+currentIndex+"的歌曲");
}else{
channelArray[currentIndex]=soundArray[currentIndex].play();
trace("您操作了下一曲,現(xiàn)在播放索引為"+currentIndex+"的歌曲");
}
currentPlay.text="正在播放:"+songListArray[currentIndex].text;
songListArray[currentIndex].textColor=0x00ff00;
}
private function onLoad(evt:Event):void{
var currentPlayPercent:Number=channelArray[currentIndex].position/soundArray[currentIndex].length;
loadtxt.text="播放進度:"+Math.round(currentPlayPercent*100)+"%";
loadrect.x=50+currentPlayPercent*frame.width;
}
//繪制按鈕
private function getButton():Sprite
{
var button:Sprite=new Sprite();
button.graphics.beginFill(0x990000);
button.graphics.drawRect(0,0,50,20);
button.graphics.endFill();
return button;
}
//繪制矩形條
private function getLoad(width:int,height:int,color:uint):Sprite{
var rect:Sprite=new Sprite();
rect.graphics.beginFill(color);
rect.graphics.drawRect(0,0,width,height);
rect.graphics.endFill();
return rect;
}
}
}