增加音量点击按钮在flash播放器使用actionscript

Question

我正在制作一个flash pay。我已经完成了volume部分，我还想增加两个函数。一是当用户点击"添加按钮"时，会增加当前音量并改变音量显示颜色。二是当用户点击"减号键"时，会减少当前音量并改变音量显示颜色。

我怎么写这两个函数?我已经尝试过for循环，但我对编程很陌生，所以它完全搞砸了…

我当前的actionscript代码是

import flash.net.URLRequest;
import flash.media.Sound;
import flash.events.Event;
import flash.media.SoundChannel;
import flash.events.MouseEvent;
import flash.events.ProgressEvent;
import flash.media.SoundTransform;
var audiofile:URLRequest=new URLRequest("mvl_player_test.mp3");
var song:Sound=new Sound();
var songcontro:SoundChannel;
var resumetime:Number = 0;
song.addEventListener(Event.COMPLETE, songLoaded);
song.addEventListener(ProgressEvent.PROGRESS, trackLoad);
song.load(audiofile);
function songLoaded(evt:Event):void{//play songs
play_btn.addEventListener(MouseEvent.CLICK, clickedplay);
pause_btn.addEventListener(MouseEvent.CLICK, clickedpause);
volume_1.addEventListener(MouseEvent.CLICK, clickedVol_1);
volume_2.addEventListener(MouseEvent.CLICK, clickedVol_2);
volume_3.addEventListener(MouseEvent.CLICK, clickedVol_3);
volume_4.addEventListener(MouseEvent.CLICK, clickedVol_4);
volume_5.addEventListener(MouseEvent.CLICK, clickedVol_5);
volume_6.addEventListener(MouseEvent.CLICK, clickedVol_6);
volume_7.addEventListener(MouseEvent.CLICK, clickedVol_7);
}
function clickedplay(evt:MouseEvent):void{
play_btn.visible = false;
pause_btn.visible = true;
songcontro=song.play(resumetime);
addEventListener(Event.ENTER_FRAME, trackPlayback);
}
function clickedpause(evt:MouseEvent):void{
play_btn.visible = true;
pause_btn.visible = false;
resumetime = songcontro.position;
songcontro.stop();
removeEventListener(Event.ENTER_FRAME, trackPlayback);
}

function trackLoad(evt:ProgressEvent):void
{
load_progress.scaleX = evt.bytesLoaded / evt.bytesTotal;
}
function trackPlayback(evt:Event):void
{
var perPlayed:Number = songcontro.position / song.length;
played_progress.scaleX = perPlayed * (song_row.width) + song_row.scaleX;
}

这里的代码参考音量显示区域

function clickedVol_1(evt:MouseEvent):void
{
var volControl:SoundTransform = songcontro.soundTransform;
volControl.volume = 0.1;
songcontro.soundTransform = volControl;
volume_1.visible = false;
volume_1_2.visible = true;
volume_2_2.visible = false;
volume_3_2.visible = false;
volume_4_2.visible = false;
volume_5_2.visible = false;
volume_6_2.visible = false;
volume_7_2.visible = false;
}

function clickedVol_2(evt:MouseEvent):void
{
var volControl:SoundTransform = songcontro.soundTransform;
volControl.volume = 0.3;
songcontro.soundTransform = volControl;
volume_1.visible = false;
volume_2.visible = false;
volume_1_2.visible = true;
volume_2_2.visible = true;
volume_3_2.visible = false;
volume_4_2.visible = false;
volume_5_2.visible = false;
volume_6_2.visible = false;
volume_7_2.visible = false;
}
function clickedVol_3(evt:MouseEvent):void
{
var volControl:SoundTransform = songcontro.soundTransform;
volControl.volume = 0.4;
songcontro.soundTransform = volControl;
volume_1.visible = false;
volume_2.visible = false;
volume_3.visible = false;
volume_1_2.visible = true;
volume_2_2.visible = true;
volume_3_2.visible = true;
volume_4_2.visible = false;
volume_5_2.visible = false;
volume_6_2.visible = false;
volume_7_2.visible = false;
}
function clickedVol_4(evt:MouseEvent):void
{
var volControl:SoundTransform = songcontro.soundTransform;
volControl.volume = 0.5;
songcontro.soundTransform = volControl;
volume_1.visible = false;
volume_2.visible = false;
volume_3.visible = false;
volume_4.visible = false;
volume_1_2.visible = true;
volume_2_2.visible = true;
volume_3_2.visible = true;
volume_4_2.visible = true;
volume_5_2.visible = false;
volume_6_2.visible = false;
volume_7_2.visible = false;
}
function clickedVol_5(evt:MouseEvent):void
{
var volControl:SoundTransform = songcontro.soundTransform;
volControl.volume = 0.6;
songcontro.soundTransform = volControl;
volume_1.visible = false;
volume_2.visible = false;
volume_3.visible = false;
volume_4.visible = false;
volume_5.visible = false;
volume_1_2.visible = true;
volume_2_2.visible = true;
volume_3_2.visible = true;
volume_4_2.visible = true;
volume_5_2.visible = true;
volume_6_2.visible = false;
volume_7_2.visible = false;
}
function clickedVol_6(evt:MouseEvent):void
{
var volControl:SoundTransform = songcontro.soundTransform;
volControl.volume = 0.7;
songcontro.soundTransform = volControl;
volume_1.visible = false;
volume_2.visible = false;
volume_3.visible = false;
volume_4.visible = false;
volume_5.visible = false;
volume_6.visible = false;
volume_1_2.visible = true;
volume_2_2.visible = true;
volume_3_2.visible = true;
volume_4_2.visible = true;
volume_5_2.visible = true;
volume_6_2.visible = true;
volume_7_2.visible = false;
}
function clickedVol_7(evt:MouseEvent):void
{
var volControl:SoundTransform = songcontro.soundTransform;
volControl.volume = 1;
songcontro.soundTransform = volControl;
volume_1.visible = false;
volume_2.visible = false;
volume_3.visible = false;
volume_4.visible = false;
volume_5.visible = false;
volume_6.visible = false;
volume_7.visible = false;
volume_1_2.visible = true;
volume_2_2.visible = true;
volume_3_2.visible = true;
volume_4_2.visible = true;
volume_5_2.visible = true;
volume_6_2.visible = true;
volume_7_2.visible = true;
}

谢谢你的回答

Answer 1

我想你的问题是你有几个音量按钮。我会有一个横条和两个按钮，正负键。单击plusButton时，将运行一个函数setVolume(volume)，该函数将新卷设置为一个变量，确保它在0到1之间。在函数结束时，根据体积百分比更新条形图。我不喜欢你有那么多纽扣的上衣。用多个帧制作一个按钮。每一帧都会点亮一个新的音量按钮。当你点击整个剪辑时，你计算mousePositionX的百分比和volumeBar的百分比来获得新的音量。在updateBArGraphics函数中，您只需将百分比与您拥有的帧数进行比较并使用goToAndStop(volumeFrame)。

这是我写出来的，所以会有错误:

private function setVolume(newVolume : Number) : void
{
    if(newVolume > 1)
        newVolume = 1;
    if(newVolume < 0)
        newVolume = 0;
    volControl.volume = newVolume;
    songcontrol.soundTransform = volControl;
    updateVolumeBarGraphics();
}
private function onVolumeBarClickHandler(event : MouseEvent) : void
{
    // calculate where on the bar you clicked using MouseX and bar.width
    var calculatedPercentage : Number = 
    // set new volume
    setVolume(caculatedPercentage);
}
private function onVolumeMinusClickHandler(event : MouseEvent) : void
{
    setVolume(volControl.volume - 0.2);
}
private function onVolumeMinusClickHandler(event : MouseEvent) : void
{
    setVolume(volControl.volume + 0.2);
}
private function updateVolumeBarGraphics(newVolume : Number) : void
{
    var volumeFrame : int = Math.floor(newVolume * volumeBar.totalFrames) + 1;
    volumeBar.gotoAndStop(volumeFrame);
}

差不多。