Question

我试图获得两个用户设置时间之间的差异。我非常接近让这个工作，但我无法从一天到另一天得到差异。例如，如果开始时间是晚上11点，结束时间是凌晨1点，那么它将说21:00，因为它不知道一天变化后该做什么。请帮助，继承我的时间选择码。

    // Creates Simple Date Format//
    SimpleDateFormat sdf = new SimpleDateFormat("HH:mm");

    // Parses StartTime 24 Hour Format//
    try {
        if (military_start_time == null) {
        } else {

            date1 = sdf.parse(military_start_time);
        }
    } catch (ParseException e) {
        e.printStackTrace();
    }

    // Parses EndTime 24 Hour Format//
    try {
        if (military_end_time == null) {

        } else {
            date2 = sdf.parse(military_end_time);
        }
    } catch (ParseException e) {
        e.printStackTrace();
    }

    // If End Time Equals Null Do Nothing//
    if (military_end_time  != null) {

        // If Start Time Equals Null Do Nothing//
        if (military_start_time != null) {

            // Subtracts Two Times In 24 Hour Format And Then Puts It Into 12 Hour Format//
            long differance = date2.getTime() - date1.getTime();
            int days = (int) (differance / (1000*60*60*24));
            int hours = (int) ((differance - (1000*60*60*24*days)) / (1000*60*60));
            int min = (int) (differance - (1000*60*60*24*days) - (1000*60*60*hours)) / (1000*60);
            String diffTime = (hours<0 ? "0" + -hours : hours) + ":" + (min < 10 ? "0" + min : min);

            // Set Time Differance//
            totaltime.setText(diffTime);
        }

    }
}

Answer 1

您可以使用Joda-Time库。见here

Answer 2

试试这个：

long diff = date2.getTime() - date1.getTime();

long seconds = TimeUnit.MILLISECONDS.toSeconds(diff);
long minutes = TimeUnit.MILLISECONDS.toMinutes(diff);
long hours = TimeUnit.MILLISECONDS.toHours(diff);
long days = TimeUnit.MILLISECONDS.toDays(diff);

Answer 3

我有自己的客户方法，我长期使用，你可以使用它。它肯定适合你。下面是代码 -

public static String getTimeDifferance(String startTime,String endTime){
    try{
        Date time1 = new SimpleDateFormat("HH:mm:ss").parse(endTime);
        Calendar calendar1 = Calendar.getInstance();
        calendar1.setTime(time1);

        Date time2 = new SimpleDateFormat("HH:mm:ss").parse(startTime);
        Calendar calendar2 = Calendar.getInstance();
        calendar2.setTime(time2);

        Date x = calendar1.getTime();
        Date xy = calendar2.getTime();
        long diff = x.getTime() - xy.getTime();
        int diffMinutes = (int) (diff / (60 * 1000));

        int diffHours = diffMinutes / 60;
        System.out.println("diff hours" + diffHours);
        if(diffMinutes>59){
            diffMinutes = diffMinutes%60;
        }
        String totalDiff = diffHours+":"+diffMinutes+":00";
        return totalDiff;
    }
    catch(Exception e){
        e.printStackTrace();
    }
    return "";
}

希望我对你有所帮助。一切顺利!!

<强> EDITED

将您的代码更新为 -

if (military_start_time != null) {
    String timeDiff = getTimeDifferance(military_start_time,military_end_time);
    totaltime.setText(timeDiff);
}

获得两次android的区别

3 个答案: