GCM data helper

Transfer custom data throught Google Cloud Messaging (GCM) to the devices. GCM normally transfer data in a bucket, a map. I customize the map to support serialization framework (Fasterxml). So you can send a JSON object, or Java graph to the device. Java graph will be serialized in the JSON format, defined with data and type of object.

Client

Android client handle messages, automatically transfer messages to the custom data. Override JsonGcmListenerService#consumeMessage to consume DTOs.

Server

GcmClient send message by Google Http-client. I choose Google HTTP client, because it can run very well at GAE, Android, SE and other environments.

Dependecies

• Fasterxml 2.7.3
• Resteasy 3.0.16
• Logback 1.1.7
• Google Http-client 1.21

Okey, how can use it?

Prepare your custom project, with 3 modules. Create one Android module and one module for Server side. Create another "domain" module. Put all data-domain-object (DTO) to this module. Import domain module to other modules. All DOTs will be automatically transferred from server to the devices.