android用mqtt推送通知

Question

客户端首次连接到服务器时，如何将信息从android设备保存到数据库，这样我就知道应该将通知推送到哪个设备？

Answer 1

First, there's a lot of great information about MQTT on Android on the MQTT.org wiki .

This question is less about Android or MQTT and more about uniquely identifying a client device, and managing data on the backend service. There's no single answer here, but your device's MQTT ClientID / identifier needs to be unique so eg you will want to generate an identifier on the client side which is unique before connecting to a broker. You probably want to establish a specific topic for push notifications to that device too. When initially provisioning a new client, squirrel that information away into a database of your choice so you know the topic to use to address an individual device.