Android StopWatch - How to resume my time

Question

I'm making stopwatch application for Android. I want when stop is clicked the time to stop, and when the Start is clicked again the time to be resumed. I'm using http://www.goldb.org/stopwatchjava.html class. Currently the time is resumed on click on Start button, but when i click Stop after second time it's showing bad time. Again on Start button the time is resumed correctly. Here's my code:

Handler mHandler = new Handler()
{
    @Override
    public void handleMessage(Message msg) {
        super.handleMessage(msg);
        switch (msg.what) {
        case MSG_START_TIMER:
            timer.start(); //start timer
            mHandler.sendEmptyMessage(MSG_UPDATE_TIMER);
            break;

        case MSG_UPDATE_TIMER:

            time = timer.getElapsedTime() + timeStoped;

            hh = time / 3600000;
            hours.setText("" + formatter.format(hh));
            time = time - hh * 3600000;

            mm = time / 60000;
            minutes.setText("" + formatter.format(mm));
            time = time - mm * 60000;

            ss = time / 1000;
            seconds.setText("" + formatter.format(ss));
            time = time - ss * 1000;

            millis.setText("" + formatter.format(time / 10));

            mHandler.sendEmptyMessageDelayed(MSG_UPDATE_TIMER,REFRESH_RATE); //text view is updated every second, 
            break;      
                                                                             //though the timer is still running
        case MSG_STOP_TIMER:

            mHandler.removeMessages(MSG_UPDATE_TIMER); // no more updates.
            timer.stop();//stop timer

            time = timer.getElapsedTime();
            timeStoped = timeStoped + time;

            hh = time / 3600000;
            hours.setText("" + formatter.format(hh));
            time = time - hh * 3600000;

            mm = time / 60000;
            minutes.setText("" + formatter.format(mm));
            time = time - mm * 60000;

            ss = time / 1000;
            seconds.setText("" + formatter.format(ss));
            time = time - ss * 1000;

            millis.setText("" + formatter.format(time / 10));

            break;

        default:
            break;
        }
    }
};

the Listener for the button Start/Stop :

startBtn.setOnClickListener(new OnClickListener() {
        public void onClick(View v) {
            if (!startIsPressed) {
                mHandler.sendEmptyMessage(MSG_START_TIMER);
                startIsPressed = true;
                startBtn.setText(R.string.stop);
            } else {
                startIsPressed = false;
                startBtn.setText(R.string.start);
                mHandler.sendEmptyMessage(MSG_STOP_TIMER);
            }
        }
    });

Answer 1

The solution is to replace:

    time = timer.getElapsedTime();
    timeStoped = timeStoped + time;

with:

    time = timer.getElapsedTime() + timeStopped;
    timeStopped = time;