Flash/Flex学习笔记(6)：制作基于xml数据源的flv视频播放器

<?xml version="1.0" encoding="utf-8"?>
<data>
  <item flv="flv地址1" photo="缩略图1" url="点击路径1" name="名称1"></item>
  <item flv="flv地址2" photo="缩略图2" url="点击路径2" name="名称2"></item>        
  ...
</data>

var _xml:XML ;//声明一个XML类型的变量，用于后面接收数据
var _urlReq:URLRequest = new URLRequest();
_urlReq.url="xml文件地址";
var _loader:URLLoader=new URLLoader(_urlReq);//(异步)开始加载xml
_loader.addEventListener(Event.COMPLETE,loadCompleted);//配置加载完成后的回调函数

//加载完成后的处理函数
function loadCompleted(e:Event):void {
	_xml=XML(_loader.data);
	for each (var item in _xml.item) {
		trace(item.@flv + "," + item.@photo + "," + item.@url + "," + item.@name});//AS中用@来访问xml节点元素的属性
	}	
}

import fl.events.ListEvent;
import fl.video.VideoEvent;
import fl.video.VideoProgressEvent;

lblDebug.visible = false; //关闭调试
flv1.play();//先默认播放第一个

var _xml:XML ;
var _urlReq:URLRequest = new URLRequest();
_urlReq.url="xml文件地址";
var _loader:URLLoader=new URLLoader(_urlReq);
_loader.addEventListener(Event.COMPLETE,loadCompleted);

var _dp:DataProvider = new DataProvider();
var _currentIndex:uint=0;

function loadCompleted(e:Event):void {
	_xml=XML(_loader.data);
	for each (var item in _xml.item) {
		_dp.addItem({flv:item.@flv,source:item.@photo,url:item.@url,name:item.@name});
	}

	if (_dp.length>0) {
		playflv(_currentIndex);
		flv1.addEventListener(VideoEvent.COMPLETE,playCompleted);
		flv1.addEventListener(VideoEvent.BUFFERING_STATE_ENTERED,buffered);
		flv1.addEventListener(VideoEvent.STOPPED_STATE_ENTERED,stopEntered);
		flv1.addEventListener(VideoEvent.PAUSED_STATE_ENTERED,pauseEntered);
		flv1.addEventListener(VideoEvent.PLAYING_STATE_ENTERED,playingEntered);
		flv1.addEventListener(VideoProgressEvent.PROGRESS,progressHandler);
	}
}

lst1.dataProvider=_dp;
lst1.addEventListener(ListEvent.ITEM_CLICK,clickBaby);

//点击宝贝时，播放对应的视频
function clickBaby(e:ListEvent) {
	_currentIndex=e.index;
	//trace(_currentIndex);
	playflv(_currentIndex);
}

//播放完成后，插放下一个
function playCompleted(e:VideoEvent) {
	trace("播放完成：" + e);
	playflv(_currentIndex + 1);
}

function buffered(e:VideoEvent){
	/*trace("缓冲中..." + e);
	lblDebug.text = "缓冲中...";	*/
	flv1.playWhenEnoughDownloaded();
}

function stopEntered(e:VideoEvent){
	//trace("已停止...");
	//lblDebug.text = "已停止...";
}

function pauseEntered(e:VideoEvent){
	//trace("已暂停...");
//	lblDebug.text = "已暂停...";
	pause1.visible = true;
	
}

function playingEntered(e:VideoEvent){
	//trace("播放中...");
//	lblDebug.text = "播放中...";
	pause1.visible = false;
}

function progressHandler(e:VideoProgressEvent){
	//trace(e);
	//flv1.playWhenEnoughDownloaded();
	//trace("缓冲时间：" + flv1.bufferTime);
	//trace("flv1.buffering=" + flv1.buffering + "，flv1.paused=" + flv1.paused)
	
	if (flv1.buffering || flv1.paused){//这个地方有点问题，会使用户的点击暂停失效(目前还没找到因“网速过慢导致进入缓冲的自动暂停” 与“用户自主点击暂停”如何用代码区分)
		flv1.playWhenEnoughDownloaded();
	}
}

//播放指定索引的视频
function playflv(flvIndex:uint) {
	//trace("flvIndex=" + flvIndex + "，_currentIndex=" + _currentIndex);
	if (flvIndex>=_dp.length) {
		flvIndex=0;
	}
	var item:Object=_dp.getItemAt(flvIndex);
	flv1.load(item.flv);	
	flv1.play();
	pause1.visible = false;
	_currentIndex=flvIndex;
	lst1.scrollToIndex(_currentIndex);
}

stop();