我是Chrome扩展程序的新手。我正在制作可播放youtube chromeless播放器的chrome扩展程序。
它适用于chrome浏览器。但是，它不适用于chrome扩展程序。
我测试了本地.swf文件。那是在chrome扩展上工作的。
我认为，chrome扩展程序不能调用onYouTubePlayerReady()。
所以我在window.onYouTubePlayerReady()之后叫swfobject.embedSWF()。但是，它不能在ytplayer.loadVideoById("xa8TBfPw3u0", 0);上显示错误消息。
错误消息是Uncaught TypeError: Object #<HTMLObjectElement> has no method 'loadVideoById'。manifest.json有问题吗？还是在YouTube API中？我不知道为什么无法在chrome扩展程序上工作。
popup.html 是
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>YouTube Play</title>
</head>
<body>
<table width="1000" height="390">
<tr>
<td>
<div id="videoDiv">
Loading...
</div></td>
<td valign="top">
<div id="videoInfo">
<p>
Player state: <span id="playerState">--</span>
</p>
<p>
Current Time: <span id="videoCurrentTime">--:--</span> | Duration: <span id="videoDuration">--:--</span>
</p>
<p>
Bytes Total: <span id="bytesTotal">--</span> | Start Bytes: <span id="startBytes">--</span> | Bytes Loaded: <span id="bytesLoaded">--</span>
</p>
<p>
Controls: <input type="button" id="play" value="Play" />
<input type="button" id="pause" value="Pause" />
<input type="button" id="mute" value="Mute" />
<input type="button" id="unmute" value="Unmute" />
</p>
<p>
<input id="volumeSetting" type="text" size="3" />
<input type="button" id="setVolume" value="Set Volume" /> | Volume: <span id="volume">--</span>
</p>
</div></td>
</tr>
</table>
<script type="text/javascript" src="jsapi.js"></script>
<script type="text/javascript" src="my_script.js"></script>
<script type="text/javascript" src="swfobject.js"></script>
</body>
</html>
manifest.json 是
{
"manifest_version": 2,
"name": "YouTube Player",
"description": "This extension is YouTube Player",
"version": "1.0",
"browser_action": {
"default_icon": "icon.png",
"default_popup": "popup.html"
},
"permissions": ["tabs", "http://*/*", "https://*/*", "background"],
"content_scripts": [
{
"matches": ["http://www.youtube.com/*"],
"js": ["my_script.js", "swfobject.js", "jsapi.js"]
}
]
}
my_script.js 是
/*
* Chromeless player has no controls.
*/
// Update a particular HTML element with a new value
function updateHTML(elmId, value) {
document.getElementById(elmId).innerHTML = value;
}
// This function is called when an error is thrown by the player
function onPlayerError(errorCode) {
alert("An error occured of type:" + errorCode);
}
// This function is called when the player changes state
function onPlayerStateChange(newState) {
updateHTML("playerState", newState);
}
// Display information about the current state of the player
function updatePlayerInfo() {
// Also check that at least one function exists since when IE unloads the
// page, it will destroy the SWF before clearing the interval.
if (ytplayer && ytplayer.getDuration) {
updateHTML("videoDuration", ytplayer.getDuration());
updateHTML("videoCurrentTime", ytplayer.getCurrentTime());
updateHTML("bytesTotal", ytplayer.getVideoBytesTotal());
updateHTML("startBytes", ytplayer.getVideoStartBytes());
updateHTML("bytesLoaded", ytplayer.getVideoBytesLoaded());
updateHTML("volume", ytplayer.getVolume());
}
}
// Allow the user to set the volume from 0-100
function setVideoVolume() {
var volume = parseInt(document.getElementById("volumeSetting").value);
if (isNaN(volume) || volume < 0 || volume > 100) {
alert("Please enter a valid volume between 0 and 100.");
} else if (ytplayer) {
ytplayer.setVolume(volume);
}
}
function playVideo() {
if (ytplayer) {
ytplayer.playVideo();
}
}
function pauseVideo() {
if (ytplayer) {
ytplayer.pauseVideo();
}
}
function muteVideo() {
if (ytplayer) {
ytplayer.mute();
}
}
function unMuteVideo() {
if (ytplayer) {
ytplayer.unMute();
}
}
// This function is automatically called by the player once it loads
function onYouTubePlayerReady(playerId) {
ytplayer = document.getElementById("ytPlayer");
// This causes the updatePlayerInfo function to be called every 250ms to
// get fresh data from the player
setInterval(updatePlayerInfo, 250);
updatePlayerInfo();
ytplayer.addEventListener("onStateChange", "onPlayerStateChange");
ytplayer.addEventListener("onError", "onPlayerError");
//Load an initial video into the player
ytplayer.loadVideoById("xa8TBfPw3u0", 0);
}
// The "main method" of this sample. Called when someone clicks "Run".
function loadPlayer() {
// Lets Flash from another domain call JavaScript
var params = {
allowScriptAccess : "always"
};
// The element id of the Flash embed
var atts = {
id : "ytPlayer"
};
// All of the magic handled by SWFObject (http://code.google.com/p/swfobject/)
swfobject.embedSWF("http://www.youtube.com/apiplayer?" + "&enablejsapi=1&playerapiid=ytplayer", "videoDiv", "640", "390", "8", null, null, params, atts);
//window.onYouTubePlayerReady();
document.getElementById("play").onclick = playVideo;
document.getElementById("pause").onclick = pauseVideo;
document.getElementById("mute").onclick = muteVideo;
document.getElementById("unmute").onclick = unMuteVideo;
document.getElementById("setVolume").onclick = setVideoVolume;
}
function _run() {
loadPlayer();
}
google.setOnLoadCallback(_run);
请帮我。
最佳答案
最近，在使用Chrome扩展程序时遇到了相同的问题。测试时，根本不会触发 call 。直到我阅读以下内容:
To test any of these calls, you must have your file running on a webserver, as the Flash player restricts calls between local files and the internet.
From YouTube's Player API Documentation
关于google-chrome-extension - 我无法在Chrome扩展程序上播放youtube chromeless播放器，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/19456064/