CODEWITHSUNDEEP
javaandroid
Brett
Brett

Reputation: 441

make a countdown timer

I want to make a countdown timer of New year from current time in android...

Calendar thatDay = Calendar.getInstance();
thatDay.set(Calendar.DAY_OF_MONTH,1);
thatDay.set(Calendar.MONTH,0); // 0-11 so 1 less
thatDay.set(Calendar.YEAR, 2014);

Calendar today = Calendar.getInstance();
long diff =  thatDay.getTimeInMillis() - today.getTimeInMillis();

Now how to convert this diff into day,hour,minute,seconds format? please help

Upvotes: 2

Views: 9551

Answers (6)

alexgirao
alexgirao

Reputation: 895

the following code

import java.util.Date;
import java.util.Calendar;

public class cal {
    public static int SECONDS_IN_A_DAY = 24 * 60 * 60;
    public static void main(String[] args) {
        Calendar thatDay = Calendar.getInstance();
        thatDay.setTime(new Date(0)); /* reset */
        thatDay.set(Calendar.DAY_OF_MONTH,1);
        thatDay.set(Calendar.MONTH,0); // 0-11 so 1 less
        thatDay.set(Calendar.YEAR, 2014);

        Calendar today = Calendar.getInstance();
        long diff =  thatDay.getTimeInMillis() - today.getTimeInMillis(); 
        long diffSec = diff / 1000;

        long days = diffSec / SECONDS_IN_A_DAY;
        long secondsDay = diffSec % SECONDS_IN_A_DAY;
        long seconds = secondsDay % 60;
        long minutes = (secondsDay / 60) % 60;
        long hours = (secondsDay / 3600); // % 24 not needed

        System.out.printf("%d days, %d hours, %d minutes and %d seconds\n", days, hours, minutes, seconds);
    }
}

produces

27 days, 17 hours, 18 minutes and 2 seconds
27 days, 17 hours, 18 minutes and 1 seconds
27 days, 17 hours, 18 minutes and 0 seconds
27 days, 17 hours, 17 minutes and 59 seconds
27 days, 17 hours, 17 minutes and 58 seconds
27 days, 17 hours, 17 minutes and 57 seconds
27 days, 17 hours, 17 minutes and 56 seconds
27 days, 17 hours, 17 minutes and 55 seconds
27 days, 17 hours, 17 minutes and 54 seconds
27 days, 17 hours, 17 minutes and 53 seconds

hope this is what you want

Upvotes: 5

NagarjunaReddy
NagarjunaReddy

Reputation: 8645

Try this one 

 String formatStr = "yyyy-MM-dd HH:mm:ss";

 SimpleDateFormat sdf1 = new SimpleDateFormat(formatStr);
TimeZone obj = TimeZone.getTimeZone("CST");

sdf1.setTimeZone(obj);
Date date = sdf1.parse("your time"); // here put your time zone
long millis = date.getTime();

long currentTimeInMili = new Date().getTime();
MyCount counter = new MyCount(millis - currentTimeInMili, 1 * 1000);
  counter.start();



 class MyCount extends CountDownTimer {
    public MyCount(long millisInFuture, long countDownInterval) {
        super(millisInFuture, countDownInterval);
    }// MyCount

    public void onPause() {
        onPause();
    }// finish

    public void onTick(long millisUntilFinished) {
        dynamicMatchDesTextView.setText(""+ formatTime(millisUntilFinished)+ " till match start");

    }// on tick

    @Override
    public void onFinish() {
        onStop();

    }// finish
}

public String formatTime(long millis) {

    String output = "00:00";
    try {
        long seconds = millis / 1000;
        long minutes = seconds / 60;
        long hours = seconds / 3600;
        long days = seconds / (3600 * 24);

        seconds = seconds % 60;
        minutes = minutes % 60;
        hours = hours % 24;
        days = days % 30;

        String sec = String.valueOf(seconds);
        String min = String.valueOf(minutes);
        String hur = String.valueOf(hours);
        String day = String.valueOf(days);

        if (seconds < 10)
            sec = "0" + seconds;
        if (minutes < 10)
            min = "0" + minutes;
        if (hours < 10)
            hur = "0" + hours;
        if (days < 10)
            day = "0" + days;

        output = day + "D " + hur + "H " + min + "M " + sec + "S";
    } catch (Exception e) {
        e.printStackTrace();
    }
    return output;
}

Upvotes: 1

Colby
Colby

Reputation: 454

SimpleDateFormat: This will accomplish your goal quite easily.

Simply do the following..

SimpleDateFormat fmt = new SimpleDateFormat... (read the java docs)
fmt.format(your string)

No need to re-invent the wheel and make your program larger... This code already exists in Java.

EDIT: Since OP can't read.. S Millisecond Number 978

Upvotes: -2

Scary Wombat
Scary Wombat

Reputation: 44813

int SECONDS = 1000;
int MINUTE = SECONDS * 60 ;
int HOUR =  MINUTE * 60;
int DAY = HOUR * 24;

I would start with diff and divide by DAY and then modula by DAY to get the remainder for the next part.

repeat for HOUR, and MINUTE and SECOND

Upvotes: 0

sanbhat
sanbhat

Reputation: 17622

        Calendar thatDay = Calendar.getInstance();
        thatDay.set(Calendar.DAY_OF_MONTH,1);
        thatDay.set(Calendar.MONTH,0); // 0-11 so 1 less
        thatDay.set(Calendar.YEAR, 2014);
        thatDay.set(Calendar.HOUR_OF_DAY, 0);
        thatDay.set(Calendar.MINUTE, 0);
        System.out.println(thatDay.getTime());

        Calendar today = Calendar.getInstance();
        System.out.println(today.getTime());

        int diffInYears = thatDay.get(Calendar.YEAR) - today.get(Calendar.YEAR);
        int diffInDays = ((diffInYears*365) + thatDay.get(Calendar.DAY_OF_YEAR)) - today.get(Calendar.DAY_OF_YEAR);
        diffInDays--; // Decrementing because I will be taking 1 day (which is 24 hours) to do below hours calculation
        int diffInHours = thatDay.get(Calendar.HOUR_OF_DAY)+23 - today.get(Calendar.HOUR_OF_DAY); // Used 23 hours instead of 24 hours because I am using 1 hour (60 minutes) to do below calculation
        int diffInMins = thatDay.get(Calendar.MINUTE)+60 - today.get(Calendar.MINUTE);
        System.out.println(diffInDays + " days " + diffInHours + " hours " + diffInMins +" minutes remaining");

Upvotes: 0

Kishan Reddy
Kishan Reddy

Reputation: 137

You can use this:

public String formatDate( long milliSec ) {
        long diffSec = milliSec / (1000);
        long diffMinutes = milliSec / (60 * 1000) % 60;
        long diffHours = milliSec / (60 * 60 * 1000) % 24;
        long diffDays = milliSec / (24 * 60 * 60 * 1000);
        StringBuilder date = new StringBuilder();
        if(diffDays != 0){
            date.append(diffDays).append("D ");
        }
        if(diffHours != 0){
            int length = (int)(Math.log10(diffHours)+1);
            if(length == 1){
                String s = "0"+diffHours;
                date.append(s).append(":");
            }else{
                date.append(diffHours).append(":");
            }
        }else{
            date.append("00").append(":");
        }
        if(diffMinutes != 0 ){
            int length = (int)(Math.log10(diffMinutes)+1);
            if(length == 1){
                String s = "0"+diffMinutes;
                date.append(s).append(":");
            }else{
                date.append(diffMinutes).append(":");;
            }
        }else{
            date.append("00");
        }
        if(diffSec != 0){
           int length = (int)(Math.log10(diffSec)+1);
            if(length == 1){
                String s = "0"+diffSec;
                date.append(s);
            }else{
                date.append(diffSec);
            }
        }else{
            date.append("00");
        }
        return date.toString();
    }

Upvotes: 0

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