Question

I was trying to make an adjustable sequence of time by using scheduleatfixedrate.
However, when I made this block of code I didn’t know that one can’t change the period after it has been executed unless the timer is purged.

This is my attempt at a sequenced series of events:

@Override
protected void onStart()
{


    super.onStart();

    Timer timer = new Timer();
    GregorianCalendar gCal = (GregorianCalendar) GregorianCalendar.getInstance();




    final Runnable countDivision = new Runnable()
    {
        public void run()
        {

            /**
             * Starts the sequence and wraps around when reached the last position
             */

            if(playSequenceButton.isChecked())
            {
                setEnabled(true);
                int length = sequencer.getLength();
                int i = sequencer.getPosition();
                DIODE[i].setChecked(true);
                if(i > 0)
                    DIODE[i-1].setChecked(false);
                if (i < 1)
                    DIODE[length].setChecked(false);



            }
            /**
             * Stops and resets the sequence
             */
            else
            {
                for (int i = 0; i < sequencer.getLength(); i++)
                    DIODE[i].setChecked(false);

                sequencer.setPosition(START_POSITION);
                setEnabled(false);

            }
        }
    };

    int millis = 999 - gCal.get(GregorianCalendar.MILLISECOND);
    int inputBPM = TEMPO;
    long qtrN=Math.round(((60000/inputBPM))*100000)/100000;

    long sixteenN = (qtrN/4);
    sixteenN=Math.round(sixteenN*100000)/100000;


    timer.scheduleAtFixedRate(new TimerTask()
    {

        @Override
        public void run()
        {
            //              setEnabled(true);
            runOnUiThread(countDivision);               

        }

    }, 0, sixteenN);



}

What method would you recommend for setting a period time that can be dynamically altered?
The sixteenN variable needs to be able to change while the runnable countDivision is running.
Maybe a timertask isn’t the right tool?

Regards
/M

Answer 1

Just cancel and reschedule the TimerTask!