Android Service Details (iii) AIDL use resolution

AIDL is an acronym for Android Interface Definition language, which is a description language of the Android internal process communication interface, through which we can define communication interfaces between processes.

With Aidl we can complete data communication from the server to the client

In Aidl we can declare any number of methods, except for the built-in types (int boolean, etc.) that need to be imported, with the following rules:

1. The Java primitive type does not need to be imported.

2, String, Lsit, Map, and charsequence do not need to be imported.

Create the Aidl file,new->file-> filename. aidl, add the following code:

Package Com.example.new1;interface Inewservice {void setage (int.);    int Getage ();    void SetName (String name); String getName ();}

Click Save to refresh the project and the Java code will be generated automatically under Gen.

(The resulting code is sometimes not indented and can be set by right-->source->format)

650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/5A/17/wKiom1T116rDRG8AAABsjC3apQw714.jpg "title=" 1.png " alt= "Wkiom1t116rdrg8aaabsjc3apqw714.jpg"/>

In the generated code is another stud class, which he inherits from IBinder. It can be used as the return value of service Onbind, once the service is bound by the services of other programs, the IBinder class instance is sent out, and the method data rewritten in this instance is sent along with it.

Create a new servers, named Newservice.java

Inside declare a stub class, complete the four functions defined above, the code is as follows:

package com.example.new1;import com.example.new1.inewservice.stub;import android.app.service; import android.content.intent;import android.os.bundle;import android.os.ibinder;import  Android.os.remoteexception;import android.util.log;import android.widget.toast;public class  newservice extends service {    private string name= " Www.51ct0.com ";    private int age=18;     @Override      public ibinder onbind (intent arg0)  {         // TODO Auto-generated method stub         toast.maketext (newservice.this,  "Onbind",  toast.length_long). Show ();         LOG.I ("SERVICE", "Onbind");        return  mbinder;                 //return Interface     }     public void oncreate ()  {         Super.oncreate ();         LOG.I ("SERVICE", "Oncreat");     }    public void onstart (Intent intent,int startid)  {         LOG.I ("SERVICE", "OnStart");    }     public void ondestroy ()  {        log.i (" SERVICE "," Ondestory ");    }    private inewservice.stub  Mbinder = new stub ()  {         @Override                                           //functions that implement interface definitions          public void setage (int age)  throws  Remoteexception {            // todo  Auto-generated method stub             NewService.this.age = age;        }          @Override         public int  Getage ()  throws RemoteException {             // TODO Auto-generated method stub             return NewService.this.age;         }         @Override         public void setname ( String name)  throws RemoteException {             // TODO Auto-generated method stub             NewService.this.name=name;         }         @Override          public string getname ()  throws RemoteException {             // TODO Auto-generated method stub             return NewService.this.name;         }    };}

So far, all the functions in the interface have been implemented, and the following will implement the client's call:

Create a new Activity.java with the following code:

package com.example.new1;import android.app.activity;import android.app.actionbar;import  android.app.fragment;import android.content.componentname;import android.content.intent;import  android.content.serviceconnection;import android.os.bundle;import android.os.ibinder;import  android.os.remoteexception;import android.util.log;import android.view.layoutinflater;import  android.view.menu;import android.view.menuitem;import android.view.view;import  Android.view.view.onclicklistener;import android.view.viewgroup;import android.widget.button;import  android.widget.edittext;import android.widget.textview;import android.widget.toast;import  android.os.Build;public class MainActivity extends Activity {     private textview textview;    private inewservice inewservice;// Declaration Interface     PRIVATE&NBSp Serviceconnection conn=new serviceconnection ()  {          @Override         public void onserviceconnected ( COMPONENTNAME ARG0, IBINDER ARG1)  {             // TODO Auto-generated method stub             inewservice = inewservice.stub.asinterface (arg1);//access to interface              try {                 inewservice.setname ("I am Activity");     //calling Functions                  inewservice.setage (+);                 textview.settExt (Inewservice.getname () +inewservice.getage ());             } catch  (remoteexception e)  {                 // TODO Auto-generated catch block                 e.printstacktrace ();             }             LOG.I ("SERVICE", "Success"     );         }         @Override          public void onservicedisconnected (componentname arg0)  {             // TODO Auto-generated  Method stub  &nBSP;         LOG.I ("SERVICE", "Errer");         }    };     @Override      Protected void oncreate (bundle savedinstancestate)  {         super.oncreate (savedinstancestate);         setcontentview ( R.layout.activity_main);         button button1= (Button) This.findviewbyid (R.ID.BTN1);         textview= (TextView) This.findviewbyid (R.ID.MYTEXT1);         button1.setonclicklistener (new  onclicklistener ()  {            @ Override            public void onclick ( VIEW ARG0)  {    &Nbsp;           // todo auto-generated  method stub                 bindservice (New intent (Mainactivity.this,newservice.class), conn,bind_auto_create);             }        } );     }}

This article is from the "Useless Uncle" blog, please be sure to keep this source http://aslonely.blog.51cto.com/6552465/1617053

Android Service Details (iii) AIDL use resolution