1、编写aidl文件

Book.aidl

// Book.aidl
package test.test;

// Declare any non-default types here with import statements

parcelable Book;

IMyAidlInterface.aidl

注意导入import

// IMyAidlInterface.aidl
package test.test;
import test.test.Book;
// Declare any non-default types here with import statements

interface IMyAidlInterface {


   List<Book>  getBookList();


   void addBook(inout Book book);

}

2、编写Service服务

AIDLService.java

package test.test;

import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
import android.os.RemoteException;
import android.support.annotation.Nullable;

import java.util.ArrayList;
import java.util.List;

public class AIDLService extends Service {


   private ArrayList<Book> bookList;

   @Override
   public void onCreate() {
       super.onCreate();

       bookList = new ArrayList<Book>();
       bookList.add(new Book("语文"));
       bookList.add(new Book("数学"));
       bookList.add(new Book("英语"));

   }

   @Nullable
   @Override
   public IBinder onBind(Intent intent) {
       return stub;
   }



   private final IMyAidlInterface.Stub stub =  new IMyAidlInterface.Stub(){

       @Override
       public List<Book> getBookList() throws RemoteException {
           return bookList;
       }

       @Override
       public void addBook(Book book) throws RemoteException {
           bookList.add(book);
       }
   };
}

3、绑定服务

MainActivity.java

bindService绑定服务

public class MainActivity extends AppCompatActivity {

   @BindView(R.id.button)
   Button mButton;
   @BindView(R.id.frame_layout)
   FrameLayout mFrameLayout;

   private IMyAidlInterface iMyAidlInterface;

   @Override
   protected void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.activity_main);
       ButterKnife.bind(this);
       //首先要绑定服务
       bindService(new Intent(this,AIDLService.class),serviceConnection, Service.BIND_AUTO_CREATE);


       mButton.setOnClickListener(new View.OnClickListener() {
           @Override
           public void onClick(View v) {
               try {
                   iMyAidlInterface.addBook(new Book("体育"));
                   List<Book> bookList = iMyAidlInterface.getBookList();
                   for (Book book:bookList){
                       Log.e("book",book.getName());
                   }
               } catch (RemoteException e) {
                   e.printStackTrace();
               }
           }
       });
   }


   ServiceConnection serviceConnection = new ServiceConnection() {
       @Override
       public void onServiceConnected(ComponentName name, IBinder service) {
           iMyAidlInterface = IMyAidlInterface.Stub.asInterface(service);
       }

       @Override
       public void onServiceDisconnected(ComponentName name) {
           iMyAidlInterface = null;
           Toast.makeText(MainActivity.this, name.toString(), Toast.LENGTH_SHORT).show();
       }
   };
}

4、配置不同的进程

AndroidManifest.xml

android:process配置不同的进程

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
   package="test.test">

   <application
       android:allowBackup="true"
       android:icon="@mipmap/ic_launcher"
       android:label="@string/app_name"
       android:roundIcon="@mipmap/ic_launcher_round"
       android:supportsRtl="true"
       android:theme="@style/AppTheme">
       <activity android:name=".MainActivity">
           <intent-filter>
               <action android:name="android.intent.action.MAIN" />

               <category android:name="android.intent.category.LAUNCHER" />
           </intent-filter>
       </activity>

       <service
           android:name=".AIDLService"
           android:process=":aidl"
           android:enabled="true"
           android:exported="true">
       </service>
   </application>

</manifest>