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 .show() 无法使用。

有人可以教我如何解决这类问题吗？

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

你可以简单地这样做

datePickerDialog.datePicker.minDate=Date().time

您可以创建自己的日期选择器class，方法是继承默认选择器并像下面的代码那样定义最短日期

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 2

您可以像这样转换您的方法以设置最短日期

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();
}

Answer 3

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));
    }
};

在您的代码而不是最后两行中进行此更改：

`Date newDate = calendar.getTime();

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

改变它，使它像下面这样：

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

这将禁用过去的日期。

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