Android Service for four components (8) remote communication via Messenger

Service Use binding:
There are two messengers that define a service side, Smessenger = new Messenger (new Handler () {});

Get the client's message in this messenger, get the messenger Cmessenger of the client in the received message,

Sending a message to a client is a message sent through the client Messenger Cmessenger.

Cmessenger.send (Message);

Note that a IBinder object is returned in Onbind (), Smessenger.getbinder ();

This is for the client to be able to obtain the service-side Messenger Smessenger.

Smessenger = new Messenger (IBinder) in the Serviceconnection interface;

The IBinder obtained here is the IBinder object obtained in Onbind ().

The client is sending a message to the server by obtaining the service Messenger Smessenger

Smessenger.send (msg); Send a message.

(1) Create a messenger on both the client and the service side,

The customer creates a cmessenger, and the service creates a Smessenger

(2) by means of obtaining a messenger of each other,

Get Smessenger in the client through Serviceconnection

Cmessenger = message.reply obtained on the server

(3) Send a message to each other via Messenger

Client: Smessenger.send (msg);

Service side: Cmessenger.send (msg);

 Public classMyServiceextendsService {     PublicMessenger Smessenger =NewMessenger (NewHandler () { Public voidhandlemessage (android.os.Message msg) {if(Msg.what = = 1){                intAge =Msg.arg1; String name=(String) msg.obj; //Get client Messenger                Cmessenger = msg.replyto;//Get customer information through messages log.i ("Tag", name+ "--->" +Age ); Message reply=Message.obtain (); Reply.arg1= 1234; Reply.obj= name+ ">>>>" + "Roise"; Try{//send a message to a customer via client MessengerCmessenger.send (Reply); } Catch(RemoteException e) {e.printstacktrace ();    }            }                    };    });  Public voidonCreate () {LOG.I ("Tag", "Serviceoncreate ()");                }; @Override Publicibinder onbind (Intent Intent) {log.i ("Tag", "Onbind ()"); //get IBinder through the messenger of the service        returnSmessenger.getbinder (); } @Override Public BooleanOnunbind (Intent Intent) {log.i ("Tag", "Onunbind ()"); return Super. Onunbind (Intent); } @Override Public voidOnDestroy () {LOG.I ("Tag", "Serviceondestroy"); Super. OnDestroy (); }}

 Public classMainactivityextendsActivity {Messenger smessenger; Messenger Cmessenger=NewMessenger (NewHandler () { Public voidhandlemessage (android.os.Message msg) {//Get Service Short messageString info =(String) msg.obj; intAge =Msg.arg1; LOG.I ("Tag", "Message received by client" +info+Age );    };    }); @Overrideprotected voidonCreate (Bundle savedinstancestate) {Super. OnCreate (savedinstancestate);            Setcontentview (R.layout.activity_main); }    protected voidOnStart () {Super. OnStart (); LOG.I ("Tag", "Activityonstart ()"); Intent Intent=NewIntent (mainactivity. This, MyService.class);    Bindservice (Intent, Conn, bind_auto_create);        }; protected voidOnDestroy () {LOG.I ("Tag", "Activityunbindservice ()"); Super. OnDestroy ();    Unbindservice (conn);    };  Public voidOnSend (View v) {Message msg=Message.obtain (); Msg.arg1= 12; Msg.obj= "Client";
　　　　 //For two-way communication, send the client messenger to each other Msg.replyto      = Cmessenger; Msg.what= 1; Try{smessenger.send (msg); } Catch(RemoteException e) {e.printstacktrace (); }} serviceconnection Conn=Newserviceconnection () {@Override Public voidonservicedisconnected (componentname name) {} @Override Public voidonserviceconnected (componentname name, IBinder service) {
　　　　　　　 //Get service Messenger via Serviceconnection Smessenger            = new Messenger (service); }    };}

Android Service for four components (8) remote communication via Messenger