Question

我通过这个方法写了我将两个日期比较在一起我写了这个方法我将两个日期比较在一起两个日期之间的差异如下

 return day + " days " + hh + " hour " + mm + " min";

现在我想在CountDownTimer中显示日，小时和分钟的数量我需要这方面的指导

我写的代码却错了：

int duration=81200000; 
new CountDownTimer(duration, 1000) {

    public void onTick(long millisUntilFinished) {
        long secondsInMilli = 1000;
        long minutesInMilli = secondsInMilli * 60;
        long hoursInMilli = minutesInMilli * 60;

        long elapsedHours = millisUntilFinished / hoursInMilli;
        millisUntilFinished = millisUntilFinished % hoursInMilli;

        long elapsedMinutes = millisUntilFinished / minutesInMilli;
        millisUntilFinished = millisUntilFinished % minutesInMilli;

        long elapsedSeconds = millisUntilFinished / secondsInMilli;

        String yy = String.format("%02d:%02d:%02d", elapsedHours, elapsedMinutes , elapsedSeconds);
        timer.setText(yy);
    }

    public void onFinish() {

        timer.setText("00:00");
    }
}.start();

Answer 1

我用两种不同的方法做了同样的事情，一种是自定义计算，另一种是尝试这种方法，另一种是TimeUnit。并按照我的Date and Time Complete Example

 public static final String SAMPLE_DATE_FORMAT = "yyyy-MM-dd";//;"DD/MM/YY";//"yyyy-MM-dd";

//minutes:Hours:days
    public static String getTimeSecMinutesHoursDays(String dateString) throws ParseException {


        SimpleDateFormat endDateFormat = new SimpleDateFormat(Constants.DateAndMonth.SAMPLE_DATE_TIME_FORMAT);
        String currentDateAndTime = endDateFormat.format(new Date());
        Date endDate = endDateFormat.parse(currentDateAndTime);

        SimpleDateFormat startDateFormat = new SimpleDateFormat(Constants.DateAndMonth.SAMPLE_DATE_TIME_FORMAT);
        Date startDate = startDateFormat.parse(dateString);
        // format the java.util.Date object to the desired format
      //  String startDateString = new SimpleDateFormat(Constants.DateAndMonth.SAMPLE_DATE_TIME_FORMAT).format(startDate);
//        long startMili = Tools.getMiliSecondsFromDateANDTIME(startDateString);
//        long endMili = Tools.getMiliSecondsFromDateANDTIME(currentDateAndTime);
        long difference = endDate.getTime() - startDate.getTime();

//        String[] separated = minutesHoursDays.split(":");
//        long seconds = TimeUnit.MILLISECONDS.toSeconds(difference);

        String minutesHoursDays=calculateTime(difference); //minutes:Hours:days

        return minutesHoursDays;

    }



 public static String calculateTime(long milis) {

                String time="";
                int day = (int) (m

ilis / (1000 * 60 * 60 * 24));
            int hours = (int) ((milis - (1000 * 60 * 60 * 24 * day)) / (1000 * 60 * 60));
            int minute = (int) (milis - (1000 * 60 * 60 * 24 * day) - (1000 * 60 * 60 * hours)) / (1000 * 60);
            int second = (int) ((milis / 1000) % 60);

            if(day>0){
                if(day==1){
                    time =day+" day";
                }else{
                    time =day+" days";
                }
            }else if(day<1 && hours>0){

                if(hours==1){
                    time =hours +" hr";
                }else{
                    time =hours +" hrs";
                }
            }else if(hours<1 && minute>0){
                if(minute==1){
                    time =minute +" min";
                }else{
                    time =minute +" mins";
                }
            }else if(minute<1 && second>0){

                if(second==1){
                    time =second +" sec";
                }else{
                    time =second +" secs";
                }
            }else {

            if (second <= 0) {
                time = "0 sec";
            }
        }

或尝试使用TimeUnit

        try {
            int timeUnitDay = (int) TimeUnit.MILLISECONDS.toDays(milis);
            long timeUnitHours = TimeUnit.MILLISECONDS.toHours(milis);
            long timeUnitMinutes = TimeUnit.MILLISECONDS.toMinutes(milis);
            long timeUnitSeconds = TimeUnit.MILLISECONDS.toSeconds(milis);
        } catch (Exception e) {
            e.printStackTrace();
        }


        //  System.out.println("Day " + day + " Hour " + hours + " Minute " + minute + " Seconds " + second);

        // time = "Day " + day + " : Hour " + hours + " : Minute " + minute + " : Seconds " + second;
        return time;
    }

Answer 2

可以使用Handler实现计时器。这是代码：

public android.os.Handler handler;
public Runnable runnable;

 handler = new android.os.Handler();
    runnable = new Runnable() {
        @Override
        public void run() {
            handler.postDelayed(this, 1000);
            try {
                SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
                Date eventdate = dateFormat.parse("Your date in yyyy-mm-dd");
                Date currentdate = new Date(); //2nd date taken as current date

                if(!currentdate.after(eventdate))
                {
                    long diff = eventdate.getTime() - currentdate.getTime();
                    long days = diff / (24 * 60 * 60 * 1000);
                    diff -= days * (24 * 60 * 60 * 1000);
                    long hours = diff / (60 * 60 * 1000);
                    diff -= hours * (60 * 60 * 1000);
                    long minutes = diff / (60 * 1000);
                    diff -= minutes * (60 * 1000);
                    long seconds = diff / 1000;

                    String days = String.format("%02d",days);
                    String hours = String.format("%02d",hours);
                    String mins = String.format("%02d",minutes));
                    String seconds = String.format("%02d",seconds));

                }
 }
            catch (Exception e)
            {
                e.printStackTrace();
            }
        }
    };
    handler.postDelayed(runnable,0);

CountDownTimer比较两个日期

2 个答案: