传递数据后创建后台service来处理事件！

package com.lixu.service;

import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
import android.widget.Toast;
//定义一个后台类
public class Myservice extends Service {

    @Override
    public void onCreate() {
        // TODO Auto-generated method stub
        super.onCreate();
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        int[] nums=intent.getIntArrayExtra(Changliang.KEY);
        int numhe=nums[0]+nums[1];
        Toast.makeText(getApplicationContext(), numhe+"", 1).show();
        return super.onStartCommand(intent, flags, startId);
    }

    @Override
    public IBinder onBind(Intent intent) {
        // TODO Auto-generated method stub
        return null;
    }

}

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;

public class MainActivity extends Activity {
    EditText et1;
    EditText et2;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        et1=(EditText) findViewById(R.id.et1);
        et2=(EditText) findViewById(R.id.et2);
        Button button=(Button) findViewById(R.id.btn1);
        button.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                Intent intent=new Intent(MainActivity.this,Myservice.class);
                int[] nums=new int[2];
                nums[0]=Integer.parseInt(et1.getText().toString());
                nums[1]=Integer.parseInt(et2.getText().toString());
                intent.putExtra(Changliang.KEY, nums);
                startService(intent);
            }
        });
    }

    @Override
    protected void onDestroy() {
        //Activity销毁的时候关闭服务
        Intent intent=new Intent(MainActivity.this,Myservice.class);
        stopService(intent);
        super.onDestroy();
    }

}

记住在manifest中注册service；

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

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

        <service android:name=".Myservice" >
        </service>
    </application>