Question

我正在尝试以字符串的形式获得时间差异，但我总是得到差异，我正在黑莓上工作。

            long startTime = HttpDateParser.parse("01:00:00");
            System.out.println("start time is :" + startTime);
            long endTime = HttpDateParser.parse("02:00:00");
            System.out.println("end time is :" + endTime);
            long diff = endTime - startTime;
            long diffHours = diff / (60 * 60 * 1000);

Answer 1

如果您只计算两次在同一天之间的格式为“HH：MM：SS”的时间，则非常容易

使用简单的HttpDateParser并获取具有适当格式的任何日期

喜欢“星期二，2012年3月27日09:11:37 GMT”

这里我们只更换时间，然后你会得到两次之间的毫秒时间

String common="Tue, 27 Mar 2012 "; //09:11:37 GMT
            String time1="1:50:10";
            String time2="3:30:20";
             long startTime = HttpDateParser.parse(common+time1+" GMT");
             System.out.println("start time is :" + startTime);
             long endTime =  HttpDateParser.parse(common+time2+" GMT");
             System.out.println("end time is :" + endTime);
             long diff = endTime - startTime;
            long hours=diff/(60*60*1000);
         long minutes=(diff%(60*60*1000))/(60*1000);

         long sec=((diff%(60*60*1000))%(60*1000))/1000;
         String formateddate="";
         if(hours<10)
         {
             formateddate="0"+hours;
         }else{
             formateddate=""+hours;
         }
         if(minutes<10)
         {
             formateddate=formateddate+":0"+minutes;
         }else{
             formateddate=formateddate+":"+minutes;
         }
         if(sec<10)
         {
             formateddate=formateddate+":0"+sec;
         }else{
             formateddate=formateddate+":"+sec;
         }


         System.out.println("Difference in Houres:"+formateddate);

我的输出为

[0.0] start time is :1332813010000
[0.0] end time is :1332819020000
[0.0] Difference in Houres:01:40:10

注意：如果要在两个不同的日期之间进行计算在这里你需要传递日期格式应该是正确的例如：“YYYY-mm-dd hh：mm：ss”

这里我提供一些示例

import java.util.Calendar;

import net.rim.device.api.i18n.SimpleDateFormat;
import net.rim.device.api.io.http.HttpDateParser;
import net.rim.device.api.ui.Field;
import net.rim.device.api.ui.FieldChangeListener;
import net.rim.device.api.ui.component.ButtonField;
import net.rim.device.api.ui.component.LabelField;
import net.rim.device.api.ui.container.MainScreen;
import net.rim.device.api.ui.picker.DateTimePicker;

public final class Screen1 extends MainScreen implements FieldChangeListener
{
    /**
     * Creates a new MyScreen object
     */
    ButtonField date1;
    ButtonField date2;
    ButtonField button;
    LabelField lbl;
    DateTimePicker picker;
    String str="";
    Calendar cal;   

    public Screen1()
    {   

        date1=new ButtonField("date1");
        date1.setChangeListener(this);
        add(date1);

        date2=new ButtonField("date2");
        date2.setChangeListener(this);
        add(date2);

        button = new ButtonField("Screen 1 ");
        button.setChangeListener(this);
        add(button);
        lbl=new LabelField();
        add(lbl);
    }
    public void fieldChanged(Field field, int context) {
        if(field==button){//Tue, 27 Mar 2012 09:11:37 GMT

            System.out.println(date1.getLabel().toString()+"   "+date2.getLabel().toString());
             long startTime = HttpDateParser.parse(date1.getLabel().toString());
             System.out.println("start time is :" + startTime);
             long endTime =  HttpDateParser.parse(date2.getLabel().toString());
             System.out.println("end time is :" + endTime);
             long diff = endTime - startTime;

             long hours=diff/(60*60*1000);
         long minutes=(diff%(60*60*1000))/(60*1000);

         long sec=((diff%(60*60*1000))%(60*1000))/1000;
         String formateddate="";
         if(hours<10)
         {
             formateddate="0"+hours;
         }else{
             formateddate=""+hours;
         }
         if(minutes<10)
         {
             formateddate=formateddate+":0"+minutes;
         }else{
             formateddate=formateddate+":"+minutes;
         }
         if(sec<10)
         {
             formateddate=formateddate+":0"+sec;
         }else{
             formateddate=formateddate+":"+sec;
         }


         System.out.println("Difference in Houres:"+formateddate);
         lbl.setText("Time Between above dates is :"+formateddate);
        }else if(field==date1)
        {
            date1.setLabel(getDateTimeFromPicker().toString());                                 

        }else if(field==date2)
        {
            date2.setLabel(getDateTimeFromPicker().toString());
        }

    }
    private String getDateTimeFromPicker()
    {
        picker = DateTimePicker.createInstance( Calendar.getInstance(), "yyyy-MM-dd", "HH:mm:ss");
        picker.doModal();
        cal=picker.getDateTime();
        str="";
        if((cal.get(Calendar.MONTH)+1)<10)
            str=str+cal.get(Calendar.YEAR)+"-"+"0"+(cal.get(Calendar.MONTH)+1);
        else
            str=str+cal.get(Calendar.YEAR)+"-"+(cal.get(Calendar.MONTH)+1);

        if(cal.get(Calendar.DATE)<10)
            str=str+"-"+"0"+cal.get(Calendar.DATE);
        else
            str=str+"-"+cal.get(Calendar.DATE);

        if(cal.get(Calendar.HOUR_OF_DAY)<10)
            str=str+" "+"0"+cal.get(Calendar.HOUR_OF_DAY);
        else
            str=str+" "+cal.get(Calendar.HOUR_OF_DAY);

        if(cal.get(Calendar.MINUTE)<10)
            str=str+":"+"0"+cal.get(Calendar.MINUTE);
        else
            str=str+":"+cal.get(Calendar.MINUTE);

        if(cal.get(Calendar.SECOND)<10)
            str=str+":"+"0"+cal.get(Calendar.SECOND);
        else
            str=str+":"+cal.get(Calendar.SECOND);
        return str;
    }
}

您可以在屏幕中看到以下输出 enter image description here

Answer 2

我认为你传递的字符串不是预期的格式。有关详细信息，请参阅此link RIM BlackBerry API。

格式化的字符串应该是这些

中的任何一个

"Wdy, DD Mon YY"
"Wdy, DD Mon YYYY"
"Wdy, DD Mon YY HH:MM:SS"
"Wdy, DD Mon YY HH:MM:SS GMT"
"Wdy, DD Mon YY HH:MM:SS TZD"
"Wdy, DD Mon YY HHMMSS"
"Wdy, DD Mon YY HHMMSS GMT"
"Wdy, DD Mon YY HHMMSS TZD"
"Wdy, DD Mon YYYY HH:MM:SS"
"Wdy, DD Mon YYYY HH:MM:SS GMT"
"Wdy, DD Mon YYYY HH:MM:SS TZD"
"Wdy, DD Mon YYYY HHMMSS"
"Wdy, DD Mon YYYY HHMMSS GMT"
"Wdy, DD Mon YYYY HHMMSS TZD"
"Wdy, Mon DD YY HH:MM:SS"
"Wdy, Mon DD YY HH:MM:SS GMT"
"Wdy, Mon DD YY HH:MM:SS TZD"
"Wdy, Mon DD YY HHMMSS"
"Wdy, Mon DD YY HHMMSS GMT"
"Wdy, Mon DD YY HHMMSS TZD"
"Wdy, Mon DD YYYY HH:MM:SS"
"Wdy, Mon DD YYYY HH:MM:SS GMT"
"Wdy, Mon DD YYYY HH:MM:SS TZD"
"Wdy, Mon DD YYYY HHMMSS"
"Wdy, Mon DD YYYY HHMMSS GMT"
"Wdy, Mon DD YYYY HHMMSS TZD"
"Wdy, DD Mon YY, HH:MM:SS"
"Wdy, DD Mon YY, HH:MM:SS GMT"
"Wdy, DD Mon YY, HH:MM:SS TZD"
"Wdy, DD Mon YY, HHMMSS"
"Wdy, DD Mon YY, HHMMSS GMT"
"Wdy, DD Mon YY, HHMMSS TZD"
"Wdy, DD Mon YYYY, HH:MM:SS"
"Wdy, DD Mon YYYY, HH:MM:SS GMT"
"Wdy, DD Mon YYYY, HH:MM:SS TZD"
"Wdy, DD-Mon-YY HH:MM:SS"
"Wdy, DD-Mon-YY HH:MM:SS GMT"
"Wdy, DD-Mon-YY HH:MM:SS TZD"
"Wdy, DD-Mon-YY HHMMSS"
"Wdy, DD-Mon-YY HHMMSS GMT"
"Wdy, DD-Mon-YY HHMMSS TZD"
"Wdy, DD-Mon-YY, HH:MM:SS"
"Wdy, DD-Mon-YY, HH:MM:SS GMT"
"Wdy, DD-Mon-YY, HH:MM:SS TZD"
"Wdy, DD-Mon-YY, HHMMSS"
"Wdy, DD-Mon-YY, HHMMSS GMT"
"Wdy, DD-Mon-YY, HHMMSS TZD"
"Wdy, DD-Mon-YYYY HH:MM:SS"
"Wdy, DD-Mon-YYYY HH:MM:SS GMT"
"Wdy, DD-Mon-YYYY HH:MM:SS TZD"
"Wdy, DD-Mon-YYYY HHMMSS"
"Wdy, DD-Mon-YYYY HHMMSS GMT"
"Wdy, DD-Mon-YYYY HHMMSS TZD"
"Wdy, DD-Mon-YYYY, HH:MM:SS"
"Wdy, DD-Mon-YYYY, HH:MM:SS GMT"
"Wdy, DD-Mon-YYYY, HH:MM:SS TZD"
"Wdy, DD-Mon-YYYY, HHMMSS"
"Wdy, DD-Mon-YYYY, HHMMSS GMT"
"Wdy, DD-Mon-YYYY, HHMMSS TZD"
"Weekday, DD-Mon-YY HH:MM:SS"
"Weekday, DD-Mon-YY HH:MM:SS GMT"
"Weekday, DD-Mon-YY HH:MM:SS TZD"
"Weekday, DD-Mon-YY HHMMSS"
"Weekday, DD-Mon-YY HHMMSS GMT"
"Weekday, DD-Mon-YY HHMMSS GMT"
"Weekday, DD-Mon-YYYY HH:MM:SS"
"Weekday, DD-Mon-YYYY HH:MM:SS GMT"
"Weekday, DD-Mon-YYYY HH:MM:SS TZD"
"Weekday, DD-Mon-YYYY HHMMSS"
"Weekday, DD-Mon-YYYY HHMMSS GMT"
"Weekday, DD-Mon-YYYY HHMMSS TZD"
"Wdy Mon DD HH:MM:SS YYYY"
"YYYY" (eg 1997)
"YYYY-MM" (eg 1997-07)
"YYYY-MM-DD" (eg 1997-07-16)
"YYYY-MM-DDThh:mmTZD" (eg 1997-07-16T19:20+01:00)
"YYYY-MM-DDThh:mm:ssTZD" (eg 1997-07-16T19:20:30+01:00)
"YYYY-MM-DDThh:mm:ss.sTZD" (eg 1997-07-16T19:20:30.45+01:00)

Answer 3

HttpDateParser只接受时间吗？根据{{3}}，它也应该有日期。因此，如果你真的需要使用这个类，可能需要快速修复，将“1:00:00”改为“2010-10-10T01：00：00”和“2:00:00”改为“2010-10-10T02” ：00：00"

如何获得字符串形式的时间差异

3 个答案: