Question

I have a timer that counts down. I want the displayed format to be 00.00 or “ss.SS”. However I haven’t made any progress in hours. Without the SimpleDateFormat it displays 01.91 then goes to 01.9. This makes it hard to watch as it flickers to keep the view centered. All I really want is a way to keep the format 01.90 and not allow the 0 to be dropped. Could I accomplish this with my original code without the SimpleDateFormat?

/*
 *  This is my original code before I tried the SimpleDateFormat
 *
 *  This code is fully functional and works good, it just keeps dropping the 0 every
 *     10 milliseconds and makes the view shake
 *
 *  getTimeSecs() could return 5, 10, 15, 30, 90 seconds converted to milliseconds
 *  getCountDownInterval() returns 10
 *  
 */

public void createTimer() {
    myCounter = new CountDownTimer(getTimeSecs(), getCountDownInterval()) {
        public void onTick(long millisUntilFinished) {
        timerIsRunning = true;

            if(millisUntilFinished < 10000) {
                TVcountDown.setText("0" + ((millisUntilFinished / 10) / 100.0));
            } else {
                TVcountDown.setText("" + ((millisUntilFinished / 10) / 100.0));
            }
        } //end onTick()

        @Override
        public void onFinish() {  
            timerIsRunning = false;
            TVcountDown.setBackgroundColor(myRes.getColor(R.color.solid_red));
            TVcountDown.setTextColor(myRes.getColor(R.color.white));
            TVcountDown.setText("Expired");

            // Make sure vibrate feature is enabled
            if(wantsVib == true) {
            vib.vibrate(300);
            }

        } //end onFinish()

    }.start();

} //end createTimer()

Here is my code after trying the SimpleDateFormat

public void createTimer() {
    myCounter = new CountDownTimer(getTimeSecs(), getCountDownInterval()) {
        public void onTick(long millisUntilFinished) {
        timerIsRunning = true;
            long current = (long) ((millisUntilFinished / 10) / 100.0);
            TVcountDown.setText("" + timerDisplay.format(current));
        }

        @Override
        public void onFinish() {  
            timerIsRunning = false;
            TVcountDown.setBackgroundColor(myRes.getColor(R.color.solid_red));
            TVcountDown.setTextColor(myRes.getColor(R.color.white));
            TVcountDown.setText("Expired");

            // Make sure vibrate feature is enabled
            if(wantsVib == true) {
                vib.vibrate(300);
            }

        }

    }.start();

} //end createTimer()

I know! I don’t even think I’m close to getting it with the SimpleDateFormat and I’m getting frustrated. It runs, but counts down only seconds, on the milliseconds side. So 15 seconds shows 00.15 not 15.00.

I don’t expect someone to code it all out for me just need pointed in the right direction. All the tutorials I can find involve years, days, and such and I can’t grasp the concept from that.

I’d prefer not to use the SimpleDateFormat — cuz it hasn’t been to simple for me — and just use my original code and add a zero to the end of the milliseconds side every 10 milliseconds.

Thanks in advance.

Answer 1

Try this:

TVcountDown.setText(convertToMyFormat(millisUntilFinished));

and convertToMyFormat() method:

public String convertToMyFormat(long ms) {
    String secString, msecString;
    //constructing the sec format:
    int sec = (int) (ms / 1000);
    if(sec < 10)        secString = "0"+sec;
    else if(sec == 0)   secString = "00";
    else                secString = ""+sec;
    //constructing the msec format:
    int msec = (int) ((ms-(sec*1000))/10.0);
    if(msec < 10)       msecString = "0"+msec;
    else if(msec == 0)  msecString = "00";
    else                msecString = ""+msec;

    return secString+":"+msecString;
}

I’m not sure if I did the msec part correctly but you can tweek it as you want.