package android.os; 
 
interface IHelloService { 
 void setVal(int val); 
 int getVal(); 
} 

## READ ME: ########################################################

 ##

 ## When updating this list of aidl files, consider if that aidl is

 ## part of the SDK API. If it is, also add it to the list below that

 ## is preprocessed and distributed with the SDK. This list should

 ## not contain any aidl files for parcelables, but the one below should

 ## if you intend for 3rd parties to be able to send those objects

 ## across process boundaries.

 ##

 ## READ ME: ########################################################

 LOCAL_SRC_FILES += /

 ....................................................................

 core/java/android/os/IVibratorService.aidl /

 core/java/android/os/IHelloService.aidl /

 core/java/android/service/urlrenderer/IUrlRendererService.aidl /

 .....................................................................

package com.android.server; 
import android.content.Context; 
import android.os.IHelloService; 
import android.util.Slog; 
public class HelloService extends IHelloService.Stub { 
 private static final String TAG = "HelloService"; 
 HelloService() { 
 init_native(); 
 } 
 public void setVal(int val) { 
 setVal_native(val); 
 } 
 public int getVal() { 
 return getVal_native(); 
 } 
 
 private static native boolean init_native(); 
 private static native void setVal_native(int val); 
 private static native int getVal_native(); 
}; 

 @Override

 public void run() {

 ....................................................................................

 try {

  Slog.i(TAG, "DiskStats Service");

  ServiceManager.addService("diskstats", new DiskStatsService(context));

 } catch (Throwable e) {

  Slog.e(TAG, "Failure starting DiskStats Service", e);

 }

 try {

  Slog.i(TAG, "Hello Service");

  ServiceManager.addService("hello", new HelloService());

 } catch (Throwable e) {

  Slog.e(TAG, "Failure starting Hello Service", e);

 }

 ......................................................................................

 }