Question

我试图创建一个静音和取消静音按钮。我不希望任何播放/暂停按钮只是静音和取消静音。到目前为止，我创建的只是静音按钮，问题是我不知道如何制作一个静音按钮。我也希望静音图标在点击后将其外观更改为取消静音图标。非常感谢任何帮助，谢谢大家。（一些方面的评论或解释也会很好）

希望我不要求太多。这是我目前的代码

var soundReq:URLRequest = new URLRequest("assets/for_flash.mp3");  
var sound:Sound = new Sound();  
var channel:SoundChannel = new SoundChannel();

sound.load(soundReq);

sound.addEventListener(Event.COMPLETE, onComplete);

    function onComplete (e:Event):void
    {
        sound.play();
    }

mute_btn.addEventListener(MouseEvent.CLICK, muteSound);

    function muteSound(e:MouseEvent):void
    {
        SoundMixer.stopAll();
    }

Answer 1

我们假设您的mute_btn实例中有一个实例名称为muteIcon的子图标，该图标的存在是您声音目前是否已取消静音的可视指示（如一个带有斜线的圆圈，类型图标），下面是一个扬声器图标。

这将是代码：

//First, you need to assign the result of the sound.play function to the sound channel
function onComplete (e:Event):void{
    channel = sound.play();
}

mute_btn.addEventListener(MouseEvent.CLICK, muteBtnClick);

function muteBtnClick(e:MouseEvent):void
{
    //check to see if the sound channel exists yet (in case you click the button before the sound loads, otherwise you'll get an error
    if(!channel) return;

    //toggle the icon's visibility
    mute_btn.muteIcon.visible = !mute_btn.muteIcon.visible;

    //now check and see if the icon is visible or not
    if(mute_btn.muteIcon.visible){
        //it is visible, so we should unmute the sound
        channel.soundTransform = new SoundTransform(1);  //1 is the volume level from 0 - 1
    }else{
        //it is not visible, so we should mute the sound
        channel.soundTransform = new SoundTransform(0); //0 is no volume, 1 is full volumn
    }
}

另外，为了提高效率，您可以更改：

var channel:SoundChannel = new SoundChannel();

对此：

var channel:SoundChannel;

因为当你执行channel = sound.play();

时，在该var中创建一个新对象是没有意义的

静音和取消静音按钮as3 flash

1 个答案: