在 DatePickerDialog 中禁用过去的日期

Question

我想添加代码.getDatePicker().setMinDate(newDate.getTime() - (newDate.getTime()%(24*60*60*1000)))以禁用过去的日期，但突然无法使用.show() .

有人可以教我如何解决这种问题吗？

代码：

btnDate.setOnClickListener(new View.OnClickListener() {
                        @Override
                        public void onClick(View v) {
                            selectDate();
                        }
                    });

private void selectDate()
{
    DatePickerDialog.OnDateSetListener dateSetListener = new DatePickerDialog.OnDateSetListener() {
        @Override
        public void onDateSet(DatePicker view, int year, int month, int dayOfMonth) {
            calendar.set(Calendar.YEAR, year);
            calendar.set(Calendar.MONTH, month);
            calendar.set(Calendar.DAY_OF_MONTH, dayOfMonth);

            String selectedDate = dateFormat.format(calendar.getTime());

            btnDate.setText(selectedDate);
            btnDate.setTextColor(getResources().getColor(colorPrimaryDark));
        }
    };

    Date newDate = calendar.getTime();

    new DatePickerDialog(TutorAddNewTimeSlotActivity.this,  dateSetListener,
            calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH)).show();
}

Answer 1

首先声明如下：

private Calendar myCalendar = Calendar.getInstance();

然后喜欢你的代码：-

DatePickerDialog.OnDateSetListener dateSetListener = new DatePickerDialog.OnDateSetListener() {
    @Override
    public void onDateSet(DatePicker view, int year, int month, int dayOfMonth) {
        calendar.set(Calendar.YEAR, year);
        calendar.set(Calendar.MONTH, month);
        calendar.set(Calendar.DAY_OF_MONTH, dayOfMonth);

        String selectedDate = dateFormat.format(calendar.getTime());

        btnDate.setText(selectedDate);
        btnDate.setTextColor(getResources().getColor(colorPrimaryDark));
    }
};

在您的代码中进行此更改而不是最后两行：

`Date newDate = calendar.getTime();

new DatePickerDialog(TutorAddNewTimeSlotActivity.this,  dateSetListener,
        calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH)).show();`

更改它并使其如下所示：

datePickerDialog.getDatePicker().setMinDate(myCalendar.getTimeInMillis()); datePickerDialog.show();

这将禁用过去的日期。

Answer 2

你可以简单地这样做

datePickerDialog.datePicker.minDate=Date().time

您可以通过继承默认的创建自己的日期选择器类并像下面的代码一样定义最小日期

class DatePicker(var onDateSetListener: DatePickerDialog.OnDateSetListener): DialogFragment() {
var date: Date? = null

override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
    val c = Calendar.getInstance()
    val year = c.get(Calendar.YEAR)
    val month = c.get(Calendar.MONTH)
    val day = c.get(Calendar.DAY_OF_MONTH)
    val datePickerDialog= DatePickerDialog(activity!!,onDateSetListener, year, month, day)
    datePickerDialog.datePicker.minDate=Date().time
    return datePickerDialog
}

}

Answer 3

您可以像这样转换您的方法以设置最小日期

private void selectDate()
{
    DatePickerDialog.OnDateSetListener dateSetListener = new DatePickerDialog.OnDateSetListener() {
        @Override
        public void onDateSet(DatePicker view, int year, int month, int dayOfMonth) {
            calendar.set(Calendar.YEAR, year);
            calendar.set(Calendar.MONTH, month);
            calendar.set(Calendar.DAY_OF_MONTH, dayOfMonth);

            String selectedDate = dateFormat.format(calendar.getTime());

            btnDate.setText(selectedDate);
            btnDate.setTextColor(getResources().getColor(colorPrimaryDark));
        }
    };

    Date newDate = calendar.getTime();

DatePickerDialog dialog= new DatePickerDialog(this,  dateSetListener,
                calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH)).show();
dialog.getDatePicker().setMinDate(Calendar.getInstance().getTimeInMillis());
        dialog.show();
}