方法：

服务项目目录结构：	调用方项目目录结构：

Iservice.aidl文件 android interface definition language 安卓用于项目间使用同一接口的方式：

package com.pas.payservice;interface IService{ 	void callpay();}

全为public所以不可以加修饰符， 调用方需要拷贝此文件及包结构

Service核心：

public IBinder onBind(Intent arg0)	{		Log.i(tag, "远程支付服务：onBind");		return new MyBinder();	}	private class MyBinder extends IService.Stub	{		@Override		public void callpay()		{			pay();		}			}

调用方主AC:注意与调用本地服务的api区别

package com.pas.useage;import com.pas.payservice.IService;import android.os.Bundle;import android.os.IBinder;import android.os.RemoteException;import android.app.Activity;import android.content.ComponentName;import android.content.Intent;import android.content.ServiceConnection;import android.view.Menu;import android.view.View;public class MainActivity extends Activity{	private Intent intent;	private IService binder;	private MyConn conn;	@Override	protected void onCreate(Bundle savedInstanceState)	{		super.onCreate(savedInstanceState);		setContentView(R.layout.activity_main);		intent = new Intent();		intent.setAction("com.pas.alipay");	}	@Override	public boolean onCreateOptionsMenu(Menu menu)	{		// Inflate the menu; this adds items to the action bar if it is present.		getMenuInflater().inflate(R.menu.main, menu);		return true;	}	public void bind(View v)	{		conn = new MyConn();		startService(intent);		bindService(intent, conn, BIND_AUTO_CREATE);	}	private class MyConn implements ServiceConnection	{		@Override		public void onServiceConnected(ComponentName name, IBinder service)		{			binder = IService.Stub.asInterface(service);		}		@Override		public void onServiceDisconnected(ComponentName name)		{			// TODO Auto-generated method stub		}	}	public void call(View v)	{		try		{			binder.callpay();		} catch (RemoteException e)		{			e.printStackTrace();		}	}	@Override	protected void onDestroy()	{		try		{			if (conn != null)			{				unbindService(conn);			}		} catch (Exception e)		{			// TODO: handle exception		}				super.onDestroy();	}}