java - android application with phonegap that run websocket in background service -

i new android familiar web programming. using phonegap write app.

my application receives news via websockets , displays them user.

my problem when application closed user, cannot use webview receiving news. after searching while found plugin phonegap can run background services java: https://github.com/red-folder/bgs-core.

but i'm new java , don't know how run websockets (autoban.ws android) in background service receive news , show in notification bar.

i think should use different approach. trying not possible on android. can use google cloud messaging push data devices app installed. kinda works this:

as long have server, example google app engine project, can push data apps , can target specific devices. apps use google cloud messaging efficient , battery friendly fast. without google cloud messaging or similar have poll server periodically , check updates. wakes device , drains battery - when need frequent updates. google cloud messaging solves of problems, going little more work if have never done before. since web developer think should able handle it.

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regarding question

my problem when application closed user, can't use webview receiving news. after searching found plugin phonegap can run background services java: https://github.com/red-folder/bgs-core.

generally kind of bad idea. , won't work on android. cannot have runs in background permanently. if could, such service drain battery fast device never sleep. if polling described above still have wake device every x minutes , check updates. can reiterate: use google cloud messaging.

nevertheless there detailed tutorials on how use bgs-core plugin:

• using myservice sample
• build own background service
• build own plugin

you can find sample project on github.

but i'm new java , don't know how run websockets (autoban.ws android) in background service receive news , show in notification bar.

android has no native solution websockets recommend use websocket library. can choose 1 of 3 libraries:

• java-websocket
• android-websockets
• autobahnandroid

in following examples use autobahnandroid

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first should go through build own plugin tutorial! tutorial assumes know basics of how create plugin, since relatively new of can take @ this answer. details how create basic plugin , should cover if not missing information other tutorial.

when done creating plugin quite simple establish connection autobahnandroid:

final websocketconnection connection = new websocketconnection(); try {     connection.connect(url, new websockethandler() {          @override         public void onopen() {             // web socket connection has been opened         }          @override         public void ontextmessage(string payload) {             // received text message         }          @override         public void onclose(int code, string reason) {             // web socket connection closed         }     }); } catch (websocketexception e) {     log.d(log_tag, "could not connect!", e); } 

you can send data this:

connection.sendtextmessage(somemessage);