访问AIDLService时老是，运行错误，哪位会的帮我看下

[qqjq547]

package com.hjq.activity;

import org.crazyit.service.ICat;

import android.app.Activity;
import android.app.Service;
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.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;

public class AidlActivity extends Activity {
private ICat catservice;
private Button getButton;
EditText color,weight;
private ServiceConnection conn=new ServiceConnection() {

@Override
public void onServiceDisconnected(ComponentName arg0) {
// TODO Auto-generated method stub
catservice=null;
}

@Override
public void onServiceConnected(ComponentName arg0, IBinder arg1) {
// TODO Auto-generated method stub
catservice=ICat.Stub.asInterface(arg1);
}
};
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
getButton=(Button)findViewById(R.id.button1);
color=(EditText)findViewById(R.id.editText1);
weight=(EditText)findViewById(R.id.editText2);
Intent intent=new Intent();
intent.setAction("com.hjq.activity.action.AIDL_SERVICE");
bindService(intent, conn, Service.BIND_AUTO_CREATE);
getButton.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
try {
color.setText(catservice.getColor());
weight.setText(catservice.getWeight()+"");
} catch (RemoteException e) {
// TODO: handle exception
e.printStackTrace();
}
}
});
}
public void onDestroy() {
super.onDestroy();
this.unbindService(conn);

}
}
package org.crazyit.service;


interface ICat
{
String getColor();
double getWeight();
}

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[赵志铭]

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