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README.md | ||
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README.md
AudioManager的使用
通过 AudioManager 类 加载音频并播放音频
函数声明
通过调用 createSound 方法返回 Sound 音频源 对象
public createSound (url:string, success:Function=null, error:Function=null):Sound
通过调用 playSound 方法返回 Channel 对象 Channel 类控制应用程序中的声音
public playSound(sound: Sound, options: any)
AudioManager.instance.createSound("../resource/audio/1.mp3", (e) => {
//Channel 类控制应用程序中的声音
this._channel = AudioManager.instance.playSound(e, { "volume": 0.5, "loop": true });
this._channel.play();
})
示例
在以下示例中,用户可暂停并重放声音文件
private _channel: egret3d.Channel;
private _sound: egret3d.Sound;
private _txt: gui.UITextField;
private _btnPlay: gui.UILabelButton;
private _btnStop: gui.UILabelButton;
private _btnPause: gui.UILabelButton;
private startTime: number = 0;
public initedGui() {
this._txt = new gui.UITextField();
this._txt.text = "Time:" + this.startTime;
this._btnPlay = new gui.UILabelButton();
this._btnPlay.label = "Play";
this._btnPlay.width = 35;
this._btnPlay.height = 20;
this._btnPlay.x = 0;
this._btnPlay.y = 50;
this._btnStop = new gui.UILabelButton();
this._btnStop.label = "Stop";
this._btnStop.width = 35;
this._btnStop.height = 20;
this._btnStop.x = 40;
this._btnStop.y = 50;
this._btnPause = new gui.UILabelButton();
this._btnPause.label = "Pause";
this._btnPause.width = 35;
this._btnPause.height = 20;
this._btnPause.x = 80;
this._btnPause.y = 50;
this._view.addGUI(this._txt);
this._view.addGUI(this._btnPlay);
this._view.addGUI(this._btnStop);
this._view.addGUI(this._btnPause);
this.initListener();
}
注册监听事件
private initListener() {
var self = this;
self._btnPlay.addEventListener(egret3d.MouseEvent3D.MOUSE_CLICK, (e) => {
if (this._channel) {
if (!this._channel.isPlaying()) {
this._channel.unpause();//播放处于暂停状态的音频
}
}
else {
AudioManager.instance.createSound("../resource/audio/music.mp3", (e) => {
this._sound = e;
this._channel = AudioManager.instance.playSound(self._sound, { "volume": 0.5, "loop": true });
this._channel.play();
})
}
}, this);
self._btnStop.addEventListener(egret3d.MouseEvent3D.MOUSE_CLICK, (e) => {
this._channel.stop();
this.startTime = 0;
this._txt.text = "Time:" + self.startTime;
}, this);
self._btnPause.addEventListener(egret3d.MouseEvent3D.MOUSE_CLICK, (e) => {
if (this._channel.isPlaying())//如果媒体文件被暂停,则返回true,否则返回false
this._channel.pause();//暂停处于播放状态的音频
}, this);
var drawMeter = function () {
if (self._channel && self._channel.isPlaying()) {
self._txt.text = "Time:" + self.startTime++;
}
requestAnimationFrame(drawMeter);
}
requestAnimationFrame(drawMeter)
}
运行结果如图所示