Question

我有两个DatePicker。一个与日期和其他与迄今。我想要显示日期总是大于从日期开始根据日期选择。我正在使用Android默认日期选择器，并想要禁用过去 TO datepicker的日期，如果它大于From日期，反之亦然。我知道这个主题在这里被多次询问过。但是，我无法使我的代码工作喜欢建议的解决方案，请帮忙吗？

Calendar calendarOne = Calendar.getInstance();


     datePickerFrom= new DatePickerDialog(getActivity(), new  
     DatePickerDialog.OnDateSetListener() { 

     @Override 
     public void onDateSet(DatePicker view, int year, int monthOfYear, 
     int dayOfMonth) {
        StringBuilder selectedDate = new 
    StringBuilder().append(dayOfMonth).append("-").append(monthOfYear + 
    1).append("-").append(year);
     fromText.setText(selectedDate);
     fromText.setTextColor(android.graphics.Color.BLACK);
    } 

  }, calendarOne.get(Calendar.YEAR), calendarOne.get(Calendar.MONTH), 
     calendarOne.get(Calendar.DAY_OF_MONTH));

 fromText.setOnClickListener(new View.OnClickListener() {
    @Override 
    public void onClick(View view) {
        datePickerFrom.getDatePicker().setMaxDate(new 
     Date().getTime()); 
        datePickerFrom.show(); 
    } 
}); 


  Calendar calendarTwo = Calendar.getInstance();
  datePickerTo = new DatePickerDialog(getActivity(), new 
  DatePickerDialog.OnDateSetListener() {
    @Override 
    public void onDateSet(DatePicker view, int year, int monthOfYear, int 
    dayOfMonth) {
        StringBuilder selectedDate = new 
   StringBuilder().append(dayOfMonth).append("-").append(monthOfYear + 
   1).append("-").append(year);
        toText.setText(selectedDate);
        toText.setTextColor(android.graphics.Color.BLACK);
      } 
   }, calendarTwo.get(Calendar.YEAR), calendarTwo.get(Calendar.MONTH), 
   calendarTwo.get(Calendar.DAY_OF_MONTH));

   toText.setOnClickListener(new View.OnClickListener() {
    @Override 
    public void onClick(View view) {
       datePickerTo.getDatePicker().setMaxDate(new Date().getTime()); 
       datePickerTo.show(); 
      } 
    }); 
   }

................................ 更新的代码

    final Calendar calendarOne = Calendar.getInstance();
    datePickerFrom= new DatePickerDialog(getActivity(), new
            DatePickerDialog.OnDateSetListener()
            {
                @RequiresApi(api = Build.VERSION_CODES.N)
                @Override
                public void onDateSet(DatePicker view, int year, final int 
    monthOfYear, int dayOfMonth)
                {
                    StringBuilder selectedDate = new
                            StringBuilder().append(dayOfMonth).append("-
      ").append(monthOfYear + 1).append("-").append(year);
                  fromText.setText(selectedDate);
                  fromText.setTextColor(android.graphics.Color.BLACK);

                    Calendar calendarTwo = Calendar.getInstance();
                   datePickerTo = new DatePickerDialog(getActivity());


    datePickerTo.getDatePicker().setMinDate(calendarOne.getTimeInMillis());

                   datePickerTo = new DatePickerDialog(activity, new 
   DatePickerDialog.OnDateSetListener() {

                        @Override
                        public void onDateSet(DatePicker view, int year, int 
    month, int dayOfMonth) {
                            StringBuilder selectedDate = new 
    StringBuilder().append(dayOfMonth).append("-").append(monthOfYear + 
    1).append("-").append(year);
                              toText.setText(selectedDate);

   toText.setTextColor(android.graphics.Color.BLACK);
                        }
                    }, calendarTwo.get(Calendar.YEAR), 
   calendarTwo.get(Calendar.MONTH),
                        calendarTwo.get(Calendar.DAY_OF_MONTH));

                      toText.setOnClickListener(new View.OnClickListener()
                    {
                        @Override
                        public void onClick(View view)
                        {
                           datePickerTo.getDatePicker().setMaxDate(new 
     Date().getTime());
                           datePickerTo.show();
                        }
                    });

                }

            }, calendarOne.get(Calendar.YEAR), 
      calendarOne.get(Calendar.MONTH),
            calendarOne.get(Calendar.DAY_OF_MONTH));

   fromText.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            datePickerFrom.getDatePicker().setMaxDate(new
                    Date().getTime());
            datePickerFrom.show();
        }
    });

Answer 1

首先在onCreate之前在课堂上声明以下内容：

private String fromDate;
private DatePickerDialog fromDatePicker;
private DatePickerDialog.OnDateSetListener fromDatePickerListener;
private Calendar fromDateCalendar;
private String toDate;
private DatePickerDialog toDatePicker;
private DatePickerDialog.OnDateSetListener toDatePickerListener;
private Calendar toDateCalendar;

之后在onCreate方法中添加以下代码：

fromDateCalendar = Calendar.getInstance();
    fromDatePickerListener = new DatePickerDialog.OnDateSetListener() {

        @Override
        public void onDateSet(DatePicker view, int year, int monthOfYear,
                              int dayOfMonth) {
            // TODO Auto-generated method stub
            fromDateCalendar.set(Calendar.YEAR, year);
            fromDateCalendar.set(Calendar.MONTH, monthOfYear);
            fromDateCalendar.set(Calendar.DAY_OF_MONTH, dayOfMonth);

            fromDate = fromDateCalendar.get(Calendar.YEAR) + "-" + (fromDateCalendar.get(Calendar.MONTH)+1) + "-" + fromDateCalendar.get(Calendar.DAY_OF_MONTH);
            //etFromDate.setText(fromDate);
            toDatePicker.getDatePicker().setMinDate(fromDateCalendar.getTimeInMillis());
        }

    };

    toDateCalendar = Calendar.getInstance();
    toDatePickerListener = new DatePickerDialog.OnDateSetListener() {

        @Override
        public void onDateSet(DatePicker view, int year, int monthOfYear,
                              int dayOfMonth) {
            // TODO Auto-generated method stub
            toDateCalendar.set(Calendar.YEAR, year);
            toDateCalendar.set(Calendar.MONTH, monthOfYear);
            toDateCalendar.set(Calendar.DAY_OF_MONTH, dayOfMonth);

            toDate = toDateCalendar.get(Calendar.YEAR) + "-" + (toDateCalendar.get(Calendar.MONTH)+1) + "-" + toDateCalendar.get(Calendar.DAY_OF_MONTH);
            //etToDate.setText(toDate);
        }

    };

    toDatePicker = new DatePickerDialog(getContext(),toDatePickerListener, toDateCalendar.get(Calendar.YEAR), toDateCalendar.get(Calendar.MONTH), toDateCalendar.get(Calendar.DAY_OF_MONTH));
    fromDatePicker = new DatePickerDialog(getContext(),fromDatePickerListener, fromDateCalendar.get(Calendar.YEAR), fromDateCalendar.get(Calendar.MONTH), fromDateCalendar.get(Calendar.DAY_OF_MONTH));

下一步是当您想要在点击按钮时显示datePicker或编辑文本时，您想要显示日期选择器，请使用以下行显示：

fromDatePicker.show();
toDatePicker.show();

如果你想在textView或editText中的任何地方展示它们，你也可以使用fromDate和toDate字符串来显示所选日期。

如何做Android datepicker到目前为止大于日期验证

1 个答案: