android - 在 DatePicker 中设置自定义日期

Question

我正在尝试创建一个应用程序，其中有两个字段“fromDate”和“toDate”。约束是“fromDate”应该大于或等于当前日期，“toDate”应该大于或等于 fromDate。我希望使用此约束打开 DatePicker。任何人都可以帮助我如何实现这一目标。

我使用下面的代码来正确获取“fromDate”，

myCalendar = Calendar.getInstance();
    year = myCalendar.get(Calendar.YEAR);
    month = myCalendar.get(Calendar.MONTH);
    day = myCalendar.get(Calendar.DAY_OF_MONTH);

date = new DatePickerDialog.OnDateSetListener() {

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

    };

fromDate_textView.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            datePickerDialog = new DatePickerDialog(
                    Sell_Product_Activity.this, date, myCalendar
                            .get(Calendar.YEAR), myCalendar
                            .get(Calendar.MONTH), myCalendar
                            .get(Calendar.DAY_OF_MONTH));
            datePickerDialog.show();
            datePickerDialog.getDatePicker().setMinDate(
                    System.currentTimeMillis() - 1000);
        }
    });

同样，任何人都可以帮助我如何从 fromDate_textView 获取日期并将“toDate”设置为大于或等于该日期。

Answer 1

使用下面的代码:

    //onCreate
    {
    fromDate_textView.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            myCalendar  = Calendar.getInstance();

            year  = c.get(Calendar.YEAR);
            month  = c.get(Calendar.MONTH);
            day  = c.get(Calendar.DAY_OF_MONTH);

            DatePickerDialog dialog = new DatePickerDialog(Home.this,
                    mDateSetListener, year, month , day );

            dialog.show();
        }
    });
}

private DatePickerDialog.OnDateSetListener mDateSetListener = new DatePickerDialog.OnDateSetListener() {
        public void onDateSet(DatePicker view, int y, int m,
                int d) {
            year = y;
            month  = m+ 1;
            day  = d;

            String date = new StringBuilder().append(day).append("-").append(month)
                .append("-").append(year).append("").toString();

            fromDate_textView.setText(date);
        }
    };