private boolean isServiceRunning() {
          ActivityManager manager = (ActivityManager) getSystemService(ACTIVITY_SERVICE);         for (ActivityManager.RunningServiceInfo service : manager.getRunningServices(Integer.MAX_VALUE)) {
              if ("com.baidu.location.service.MyLocationService".equals(service.service.getClassName())) {
                  return true;             }         }         return false;     }  @Override

protected void onStart() {
           // TODO Auto-generated method stub         super.onStart();         if(this.isServiceRunning()){
               startLocation.setText(getString(R.string.stoplocation));         }else{
               startLocation.setText(getString(R.string.startlocation));         }

}