在 MaterialDateTimePicker 中禁用每个月的星期日

Question

我正在使用MaterialDateTimePicker。我想禁用每个月的特定工作日（如星期日）。它在post 中提到，我们可以使用这个库来做到这一点，但是how to disable particular weekdays? 我当然可以使用可用的短代码来限制月数，但我不想限制月数，只是禁用工作日的选择。

public class MainActivity extends AppCompatActivity implements DatePickerDialog.OnDateSetListener {

    private TextView dateTextView;
    private CheckBox modeDarkDate;
    private CheckBox vibrateDate;
    private CheckBox dismissDate;
    private CheckBox limitDates;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // Find our View instances
        dateTextView = (TextView)findViewById(R.id.date_textview);
        Button dateButton = (Button)findViewById(R.id.date_button);


        modeDarkDate = (CheckBox)findViewById(R.id.mode_dark_date);
        vibrateDate = (CheckBox) findViewById(R.id.vibrate_date);
        dismissDate = (CheckBox) findViewById(R.id.dismiss_date);
        limitDates = (CheckBox) findViewById(R.id.limit_dates);

        // check if picker mode is specified in Style.xml
        modeDarkDate.setChecked(Utils.isDarkTheme(this, modeDarkDate.isChecked()));


        // Show a datepicker when the dateButton is clicked
        dateButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Calendar now = Calendar.getInstance();
                DatePickerDialog dpd = DatePickerDialog.newInstance(
                        MainActivity.this,
                        now.get(Calendar.YEAR),
                        now.get(Calendar.MONTH),
                        now.get(Calendar.DAY_OF_MONTH)
                );
                dpd.setThemeDark(modeDarkDate.isChecked());
                dpd.vibrate(vibrateDate.isChecked());
                dpd.dismissOnPause(dismissDate.isChecked());


                if (limitDates.isChecked()) {
                 /*   Calendar[] dates = new Calendar[13];
                    for(int i = -6; i <= 6; i++) {
                        Calendar date = Calendar.getInstance();
                        date.add(Calendar.MONTH, i);
                        dates[i+6] = date;
                    }  */

                // Add code here to disbale weekdays like Sundays.





                   // dpd.setSelectableDays(dates);
                }

                dpd.show(getFragmentManager(), "Datepickerdialog");
            }
        });
    }

    @Override
    public void onResume() {
        super.onResume();
        DatePickerDialog dpd = (DatePickerDialog) getFragmentManager().findFragmentByTag("Datepickerdialog");

        if(dpd != null) dpd.setOnDateSetListener(this);
    }



    @Override
    public void onDateSet(DatePickerDialog view, int year, int monthOfYear, int dayOfMonth) {
        String date = "You picked the following date: "+dayOfMonth+"/"+(++monthOfYear)+"/"+year;
        dateTextView.setText(date);
    }
}

Answer 1

这个答案可能有点晚了，但我有一个可以帮助其他人的解决方案。请尝试以下方法：

    // Calendar saturday;
    Calendar sunday;
    List<Calendar> weekends = new ArrayList<>();
    int weeks = 5;

    for (int i = 0; i < (weeks * 7) ; i = i + 7) {
        sunday = Calendar.getInstance();
        sunday.add(Calendar.DAY_OF_YEAR, (Calendar.SUNDAY - sunday.get(Calendar.DAY_OF_WEEK) + 7 + i));
        // saturday = Calendar.getInstance();
        // saturday.add(Calendar.DAY_OF_YEAR, (Calendar.SATURDAY - saturday.get(Calendar.DAY_OF_WEEK) + i));
        // weekends.add(saturday);
        weekends.add(sunday);
    }
    Calendar[] disabledDays = weekends.toArray(new Calendar[weekends.size()]);
    dpd.setDisabledDays(disabledDays);

此代码禁用接下来的 5 个星期日，如果您想更长时间地执行此操作，只需修改星期即可。如果您也想禁用星期六，只需取消注释这些行。

如果您想在前 5 个星期日执行此操作，只需将 for 循环修改为：

    for (int i = 0; i < (weeks * 7); i = i + 7) {
    for(int j =0; j > (weeks*7) ; j = j - 7);
    sunday = Calendar.getInstance();
    sunday.add(Calendar.DAY_OF_YEAR, (Calendar.SUNDAY - sunday.get(Calendar.DAY_OF_WEEK) + 7 + i));
        // saturday = Calendar.getInstance();
        // saturday.add(Calendar.DAY_OF_YEAR, (Calendar.SATURDAY - saturday.get(Calendar.DAY_OF_WEEK) + i));
        // weekends.add(saturday);
        weekends.add(sunday);
    }

所以第二个 for 循环将用于禁用前 5 个星期日。

Answer 2

基于 Xavi Del Palacio 的回答，我创建了更具弹性的方法 在禁用日，您可以添加日历日，例如 disabledDays.add(Calendar.MONDAY)

很抱歉使用 kotlin 而不是 java，只是想提供一个想法，如何重新设计此方法以使其更易于使用

private fun disableDatesFor4Weeks(disabledDays: ArrayList<Int>) {
        val disabledDaysInWeeks = ArrayList<Calendar>()
        disabledDays.forEach {
            dayInt ->
            var day: Calendar

            val weeks = 4

            var week = 0
            var i = 0

            while (week < weeks * 7) {
               day = Calendar.getInstance()
               day.add(Calendar.DAY_OF_YEAR, dayInt - day.get(Calendar.DAY_OF_WEEK) + 7 * i)
               disabledDaysInWeeks.add(day)
               i += 1
               week += 7
           }
        }

        if (disabledDaysInWeeks.size > 0) {
            val disabledDaysInWeeksTypedArray = disabledDaysInWeeks.toTypedArray()
            datePickerDialog!!.maxDate = disabledDaysInWeeksTypedArray.last()
            datePickerDialog!!.disabledDays = disabledDaysInWeeksTypedArray
        }
    }

Answer 3

回答可能会迟到我尝试了这个代码，它在我的星期天被禁用了

            List<Calendar> dayslist= new LinkedList<Calendar>();
            Calendar[] daysArray;
            Calendar cAux = Calendar.getInstance();
            while ( cAux.getTimeInMillis() <= gc.getTimeInMillis()) {
                if (cAux.get(Calendar.DAY_OF_WEEK) != 1) {
                    Calendar c = Calendar.getInstance();
                    c.setTimeInMillis(cAux.getTimeInMillis());
                    dayslist.add(c);
                }
                cAux.setTimeInMillis(cAux.getTimeInMillis() + (24*60*60*1000));
            }
            daysArray = new Calendar[dayslist.size()];
            for (int i = 0; i<daysArray.length;i++)
            {
                daysArray[i]=dayslist.get(i);
            }
            datePickerDialog.setSelectableDays(daysArray);