flex管理声音文件的办法

这是一整个完整的类，仅供学习使用！希望大家不要追溯版权问题，这个类使用了一个常量类来完成功能，常量类我就不放出了，相信看懂了，应该可以自己写出来。public class SoundManager{/** * 默认声音大小 */public var defaultVolume:Number=1.0;private var activeSound:Dictionary;private var _soundOn:Boolean=true;//是否关闭声音,游戏音效private var _bgSoundOn:Boolean=true;//是否关闭背景音乐private static var _instance:SoundManager=null;public function SoundManager(){activeSound = new Dictionary();}/** * 设置全局声音的大小 * @param volume 声音音量 * */public function setGlobalVolume(volume:Number):void{SoundMixer.soundTransform = new SoundTransform(volume);}/** * 设置声音的大小 * * @param name名称 * @param volume声音 */public function setVolume(name:String, volume:Number):void{var sc:SoundChannel = getActiveChannel(name);if (sc)sc.soundTransform = new SoundTransform(volume);}/** *取声音通道 * @param name * @return * */public function getActiveChannel(name:String):SoundChannel{return activeSound[name];}/*** 设置声音位置* * @param name名称* @param pan声音位置，范围由-1到1*/public function setPan(name:String, pan:Number):void{var sc:SoundChannel = getActiveChannel(name);if (sc){sc.soundTransform = new SoundTransform(sc.soundTransform.volume,pan);}}/** * 声音是否正在播放 * * @param name名称 * */public function isPlaying(name:String):Boolean{return activeSound[name]!=null;}/** * 停止播放 * * @param name名称 */public function stop(name:String):void{var sc:SoundChannel = activeSound[name];delete activeSound[name];if (sc){sc.stop();}}/** * 停止播放所有正在播放的音乐 * */public function stopAll():void{SoundMixer.stopAll();}/** * 播放 * * @param name名称 * @param loop循环次数，-1为无限循环 * @param volume声音 */public function play(name:String,startTime:Number=0, loop:int=1, volume:Number=-1,panning:Number=0):void{try{var ref:Class;if(ApplicationDomain.currentDomain.hasDefinition(name))ref = ApplicationDomain.currentDomain.getDefinition(name) as Class;elsereturn;var _sound:Sound=new ref() as Sound;var channel:SoundChannel = _sound.play(startTime, (loop != -1)?loop:int.MAX_VALUE);if (channel){if (loop != 0 && loop != -1)channel.addEventListener(Event.SOUND_COMPLETE, soundCompleteListener);activeSound[name] = channel;channel.soundTransform = new SoundTransform((volume != -1) ? volume : defaultVolume,panning);if(!_soundOn&&name!=SoundsConst.BATTLE_SOUND&&name!=SoundsConst.BG1_SOUND)//游戏音效关闭{channel.soundTransform = new SoundTransform(0);}if(!_bgSoundOn&&(name==SoundsConst.BATTLE_SOUND||name==SoundsConst.BG1_SOUND))//背景音乐关闭{channel.soundTransform = new SoundTransform(0);}}}catch(e:Error){}}private function soundCompleteListener(evt:Event):void{evt.currentTarget.removeEventListener(Event.SOUND_COMPLETE, soundCompleteListener);for (var key:* in activeSound){if (activeSound[key] == evt.currentTarget){delete activeSound[key];return;}}}/** *取SoundManager对象 * @return * */public static function getInstance():SoundManager{if(_instance==null)_instance=new SoundManager();return _instance;}/** *是否关闭音乐 * @return * */public function get soundOn():Boolean{return _soundOn;} /** * 是否关闭游戏音效 * @param value * */public function set soundOn(value:Boolean):void{if(_soundOn!=value){_soundOn = value;for (var key:* in activeSound){if (key != SoundsConst.BG1_SOUND&&key != SoundsConst.BATTLE_SOUND){var _sc:SoundChannel=activeSound[key];if (_sc){if(!_soundOn)_sc.soundTransform = new SoundTransform(0);else_sc.soundTransform = new SoundTransform(1);}}}}}/** *是否关闭背景音乐 * @return * */public function get bgSoundOn():Boolean{return _bgSoundOn;}/** * 是否关闭背景音乐 * @param value * */public function set bgSoundOn(value:Boolean):void{if(_bgSoundOn!=value){_bgSoundOn = value;if(!_bgSoundOn){setVolume(SoundsConst.BG1_SOUND,0);setVolume(SoundsConst.BATTLE_SOUND,0);}else{setVolume(SoundsConst.BG1_SOUND,1);setVolume(SoundsConst.BATTLE_SOUND,1);}}}