public class MainActivity extends Activity implements OnClickListener { private Button bt_main_start; private Button bt_main_over; private EditText et_main_inputTime; private Intent mService; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); mService = new Intent(this, MyService.class); initView(); } private void initView() { bt_main_start = (Button) findViewById(R.id.bt_main_start); bt_main_over = (Button) findViewById(R.id.bt_main_over); et_main_inputTime = (EditText) findViewById(R.id.et_main_inputTime); bt_main_start.setOnClickListener(this); bt_main_over.setOnClickListener(this); } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.activity_main, menu); return true; } @Override public void onClick(View v) { switch (v.getId()) { case R.id.bt_main_start: String minute = et_main_inputTime.getText().toString().trim(); if(TextUtils.isEmpty(minute)){ return; } mService.putExtra("minute", Integer.parseInt(minute)); startService(mService); break; case R.id.bt_main_over: stopService(mService); break; } }}原文：http://www.cnblogs.com/yingxiong123/p/4003440.html