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; else return; 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); } } }