我正在创建一个插件，要求用户从列表中选择音乐，并将其作为背景音乐播放。但是以前的帖子显示了侧边栏，用户手动按下了播放按钮。我想知道是否有一种方法只能与Google Apps脚本一起播放。另外，如果有用于设置音量的音量属性，那会有所帮助吗？
我的代码:
function onOpen(){
DocumentApp.getUi()
.createMenu("Background Music Add-On")
.addItem("Select Music","music")
.addItem("Set Volume","musicVol")
.addToUi();
}
//music selection
function music(){
var musicName = DocumentApp.getUi()
.prompt("Please select one of the music names:\n\nElevator Music,\nLeaf Rag.\nso on...")
switch(musicName){
case "Elevator":
//code to play music Elevator
break;
//So On
}
}
最佳答案
我以这个问题的答案作为起点:playing sound with google script
您将需要打开html边栏并使用音频标签，为此，您可以使用HtmlService类[1]。
作为总体背景，侧栏必须始终打开才能播放音乐。但是您仍然可以在编辑文档时播放音频。
要添加音频设置，可以将controls属性添加到音频标签[2]。为了自动播放音频，您可以添加autoplay附件[3]。
这是我为实现您的目标而实现的代码。该代码获取选定的值，并使用它将autoplay值更改为true并显示音频。另外，当select元件上对焦，它获取先前所选的值，以便以后(当选择一个新的值)，它可以被用来停止之前的音频选择和不再显示它。为此，我使用了onchange [4]和onfocus [5]事件。
代码。gs
var SIDEBAR_TITLE = 'Sidebar Musicbox';
function onOpen(e) {
DocumentApp.getUi()
.createMenu('Custom Menu')
.addItem('Show sidebar', 'showSidebar')
.addToUi();
}
function showSidebar() {
var ui = HtmlService.createHtmlOutputFromFile('Sidebar')
.setSandboxMode(HtmlService.SandboxMode.IFRAME)
.setTitle(SIDEBAR_TITLE);
DocumentApp.getUi().showSidebar(ui);
}
Sidebar.html
<!DOCTYPE html>
<html>
<head>
<base target="_top">
</head>
<body>
<div class="sidebar branding-below">
<p>
A little music for your enjoyment!
</p>
<form>
<select id="music" onchange="playSelection();" onfocus="setOldValue(this.value);">
<option value="0">0</option>
<option value="1">1</option>
<option value="2">2</option>
</select>
</form>
<br>
<audio id="player0" controls style="display:none">
<source src="[WEB-URL-FOR-MP3-FILE]" type="audio/mpeg">
Your browser does not support the audio element.
</audio>
<audio id="player1" controls style="display:none">
<source src="[WEB-URL-FOR-MP3-FILE]" type="audio/mpeg">
Your browser does not support the audio element.
</audio>
<audio id="player2" controls style="display:none">
<source src="[WEB-URL-FOR-MP3-FILE]" type="audio/mpeg">
Your browser does not support the audio element.
</audio>
<br>
<div id="sidebar-status"></div>
</div>
<div class="sidebar bottom">
<span class="gray branding-text">Docs Add-on Sound Demo</span>
</div>
</body>
<script>
var previousValue;
//Function called when select onFocus
function setOldValue(e) {
previousValue = e;
}
//Function called when selected value change
function playSelection() {
//Get the value for the selected option
var selectedValue = document.getElementById("music").value;
//Latest and previous selection IDs
var player = "player" + selectedValue;
var previousPlayer = "player" + previousValue;
//Stop and don't display the previous selection of audio
document.getElementById(previousPlayer).style.display = "none";
document.getElementById(previousPlayer).autoplay = false;
document.getElementById(previousPlayer).load();
//Play and display the new selection and put the focus on it
document.getElementById(player).style.display = "block";
document.getElementById(player).autoplay = true;
document.getElementById(player).load();
document.getElementById(player).focus();
}
</script>
</html>
[1] https://developers.google.com/apps-script/guides/html/
[2] https://www.w3schools.com/tags/att_audio_controls.asp
[3] https://www.w3schools.com/tags/att_audio_autoplay.asp
[4] https://www.w3schools.com/jsref/event_onchange.asp
[5] https://www.w3schools.com/jsref/event_onfocus.asp
关于audio - 有没有一种方法可以使用Google Apps脚本播放背景音乐？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/57914935/