Question

怎么用AS3实现一个按钮控制音频的暂停和播放

音频已经导入到库中，代码要怎么写？

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Answer 1

package game {
import fl.controls.Button;

import flash.display.Sprite;
import flash.events.MouseEvent;
import flash.media.Sound;
import flash.media.SoundChannel;
import flash.ui.Mouse;
import flash.utils.getDefinitionByName;

public class SoundControl extends Sprite {

private var _sound:Sound
private var _pauseBnt:Button
private var _playBnt:Button
private var _channel:SoundChannel

public function SoundControl(soundName) {
var _c:Class=getDefinitionByName(soundName) as Class
_sound=new _c
_pauseBnt=addChild(new Button) as Button
_playBnt=addChild(new Button) as Button
_pauseBnt.addEventListener(MouseEvent.CLICK, onPause)
_playBnt.addEventListener(MouseEvent.CLICK, onPlay)
_pauseBnt.visible=false

}

private function onPause(evt:MouseEvent):void {
if (_channel) {
_channel.stop()
_channel=null
_pauseBnt.visible=false
_playBnt.visible=true
}
}

private function onPlay(evt:MouseEvent):void {
if (!_channel) {
_channel=_sound.play()
_playBnt.visible=false
_pauseBnt.visible=true
}
}
}
}

Answer 2

使用声音控制类去控制播放盒暂停。