我使用 GCM 向用户浏览器发送通知。要注册我使用的 GCM 服务
function registerCallback(registrationId) {
if (chrome.runtime.lastError) {
// When the registration fails, handle the error and retry the
// registration later.
return;
}
// Send the registration token to your application server.
sendRegistrationId(function(succeed) {
// Once the registration token is received by your server,
// set the flag such that register will not be invoked
// next time when the app starts up.
if (succeed)
chrome.storage.local.set({registered: true});
});
}
function sendRegistrationId(callback) {
// Send the registration token to your application server
// in a secure way.
}
chrome.runtime.onStartup.addListener(function() {
chrome.storage.local.get("registered", function(result) {
// If already registered, bail out.
if (result["registered"])
return;
// Up to 100 senders are allowed.
var senderIds = ["Your-Sender-ID"];
chrome.gcm.register(senderIds, registerCallback);
});
});
我的扩展程序正在与 GCM 建立连接,并且我正在向用户浏览器发送通知。我的问题是如何在用户卸载扩展程序时取消注册 GCM 令牌。chrome 扩展中没有卸载事件。能否请任何人告诉我在我的 chrome 扩展程序中在哪里写注销 GCM 连接代码。
在我的扩展程序(background.js,contentscript.js)中编写此代码的位置..
function unregisterCallback() {
if (chrome.runtime.lastError) {
// When the unregistration fails, handle the error and retry
// the unregistration later.
return;
}
}
chrome.gcm.unregister(unregisterCallback);