MainActivity.java

package org.android.textbook.lesson2.backgroundservicesample;

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

public class MainActivity extends Activity implements OnClickListener {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        ((Button)findViewById(R.id.button1)).setOnClickListener(this);
        ((Button)findViewById(R.id.button2)).setOnClickListener(this);
    }

    @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;
    }

    @Override
    public void onClick(View v) {
        switch(v.getId()){
            case R.id.button1:
                Intent start = new Intent();
                start.setClass(getApplicationContext(), BackgroundService.class);
                startService(start);
                break;
            case R.id.button2:
                Intent stop = new Intent();
                stop.setClass(getApplicationContext(), BackgroundService.class);
                stopService(stop);

                break;
        }
    }

}