我最近了解到iPhone应用程序能够接收几乎即时的通知。
这是以推送通知的形式提供的，这是一种定制的协议，可以保持与iPhone的数据连接，并向应用程序发送二进制数据包，它会以极快的速度弹出警报，从服务器应用程序发送到手机应用程序的响应时间为0.5 - 5秒。这是作为数据而不是SMS发送的，以非常非常小的数据包作为数据计划的一部分收费，而不是作为传入消息。
我想知道，如果，使用Android，有一个类似的设施，或者是否有可能实现接近这个使用Android api的东西。为了澄清，我将相似定义为:
不是短信，而是一些数据驱动的解决方案 尽可能的实时 是否可扩展，即作为移动应用程序的服务器部分，我可以在几秒钟内通知数千个应用程序实例
我欣赏的应用程序可以拉基于，HTTP请求/响应风格，但理想情况下，我不想轮询那么严重，只是为了检查通知;除此之外，它就像滴漏数据计划。
当前回答
看看Xtify平台。看起来他们就是这么做的，
其他回答
我找不到我在哪里读到它，但我相信gmail利用一个开放的TCP连接来执行电子邮件推送。
如果你可以依靠谷歌库来满足你的目标市场，那么你可能想要依靠GTalk的功能(在现有的用户名上注册一个资源-当消息进入BroadcastReceiver时拦截它)。
如果不能，而且我希望您不能，那么您就需要捆绑您自己的XMPP版本。这是一个痛苦的过程，但是如果XMPP单独捆绑成一个独立的库，就会容易一些。
你也可以考虑PubSubHubub，但我不知道它的网络使用情况。我相信它是构建在XMPP之上的。
They have their listeners which has to be used by you by using their library classes in your code. You need not to bother about pushing. You have to send the message to server server will push the message to the device. They use OAuth. Regarding Protocols, there are two methods using CCS and XMPP. CCS just uses XMPP as an authenticated transport layer, so you can use most XMPP libraries to manage the connection. To send notifications to device you can write code in android app to send as well as your server code. the message sending will be done only by your code. Rest will be taken care by Google Server in GCM case. You can check detail at this link
http://developer.android.com/google/gcm/server.html
还有安全问题
谷歌云消息安全https://groups.google.com/forum/#!主题/ android-gcm / M-EevBitbhQ
In case your app is not running then also devices can recieve notification because you have to write code for broadcast listeners. In background it will be listening to server and whenever any message packet will be there it will recieve the message as notification. Android has service you need to not to bother about it. You have only to use those resources using the library class that makes your work easier and let them write if your app is not running then also it recieve notification. Obviously, there would be some listener whick make the app to recieve.Check "Recieve the message" section in this link
http://developer.android.com/google/gcm/client.html
它还将接受用户的请求。对于GCM，这就可以了。请勾选“发送信息”
http://developer.android.com/google/gcm/client.html
Why dont you go with the XMPP implementation. right now there are so many public servers available including gtalk, jabber, citadel etc. For Android there is one SDK is also available named as SMACK. This we cant say a push notification but using the XMPP you can keep a connection open between client and server which will allow a two way communication. Means Android client and server both can communicate to each other. At present this will fulfill the need of Push in android. I have implemented a sample code and it really works great
我最近开发了http://pushdroid.org，它是一个单一的应用程序，应该安装在手机上，就像谷歌已经在2.2中实现了它，从1.5开始工作，并通过意图广播。
