Question

我的应用程序中有一个日期选择器。我想在点击日期按钮时应用几个条件，这样的条件是它应该禁用周末。我在stackoverflow中遇到了这个问题的答案，但它给出了一个错误。拜托，你能帮助我吗？提前谢谢

 {
        //Declaration for class
        ButtonViews views;
        dpListener dpListenerView;
        // Declartion for member vairables
        int day, month, x_year;
        int hour;
        int minute;
        Calendar calendar;

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

            views = new ButtonViews();
            dpListenerView = new dpListener();

            //ButtonListener
            views.button_date.setOnClickListener(this);
            views.button_time.setOnClickListener(this);
            //

           // pick up the default date using Calender class
             calendar =  GregorianCalendar.getInstance(TimeZone.getTimeZone("GMT"), Locale.getDefault());

            day = calendar.get(Calendar.DAY_OF_MONTH);
            month = calendar.get(Calendar.MONTH);
            x_year = calendar.get(Calendar.YEAR);

            hour = calendar.get(Calendar.HOUR_OF_DAY);
            minute = calendar.get(Calendar.MINUTE);

            setupDate(day, month, x_year);
            setupTime(hour, minute);
       }

        @Override
        public void onClick(View v) {
            switch (v.getId()) {
                case R.id.button_date:
                    showDatePickerDialog();
                    break;
                case R.id.button_time:
                      showTimePickerDialog();
                    break;
            }
        }


        private void setupTime(int hours, int minutes) {
            views.button_time.setText(hours + ":" + minutes);
        }

        private void setupDate(int day, int month, int year) {
            String strMonth = ((month+1) <=9) ? ("0" + (month+1)) : String.valueOf(month+1);
            views.button_date.setText(String.valueOf(day) + "/" + strMonth + "/" + String.valueOf(year));
        }

        private void showDatePickerDialog() {
            DatePickerDialog datepickerdialog = new DatePickerDialog
                    (
                            this,
                            dpListenerView,
                           /* new DatePickerDialog.OnDateSetListener() {
                                @Override
                                public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
                                } },*/
                            //this,

                            x_year,
                            month,
                            day
                    );
            datepickerdialog.getDatePicker().setMaxDate(System.currentTimeMillis()+1000);
            datepickerdialog.getDatePicker().setMinDate(System.currentTimeMillis()-10000);
            datepickerdialog.show();
        }


     /*   private OnDateSetListener dpListener = new OnDateSetListener() {
                @Override
                public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
                   *//* day = dayOfMonth;
                    month = monthOfYear;
                    x_year = year;*//*
                    setupDate(dayOfMonth,monthOfYear,year);
                }

            };*/


        public void showTimePickerDialog() {

          TimePickerDialog   timePickerDialog = new TimePickerDialog(
                    DateTimePickerActivity.this,
                    this,
                    hour,
                    minute,
                    true
             );
            calendar.set(Calendar.HOUR, hour);
            calendar.set(Calendar.MINUTE, minute);

            timePickerDialog.show();
        }

    //    @Override
    //    public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
    //        setupDate(dayOfMonth,monthOfYear,year);
    //    }

        @Override
        public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
            setupTime(hourOfDay, minute);
        }


       class ButtonViews {

            Button button_time;
            Button button_date;

            public ButtonViews() {
                button_date = (Button) findViewById(R.id.button_date);
                button_time = (Button) findViewById(R.id.button_time);
            }
        }

      class dpListener implements OnDateSetListener

      {
            @Override
            public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
                   /* day = dayOfMonth;
                    month = monthOfYear;
                    x_year = year;*/

                setupDate(dayOfMonth,monthOfYear,year);
            }

        }

Answer 1

根据docs for the constructor：

public DatePickerDialog (
    Context context,
    DatePickerDialog.OnDateSetListener callBack,
    int year,
    int monthOfYear,
    int dayOfMonth)

必须是year, month, day，不 day, month, year。

至于你一小时外出的问题，我要看的第一个是默认时区。当时间超出一定的时间时，几乎总是与之相关。

这可能是因为您与默认设置处于不同的时区，或者您的夏令时配置不正确。

要弄清楚您的时区，请查看this question。

Answer 2

试试这个：

private void showDatePickerDialog() {
        DatePickerDialog datepickerdialog = null;
        datepickerdialog = new DatePickerDialog
                (
                        this,
                       /* new DatePickerDialog.OnDateSetListener() {
                            @Override
                            public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
                            } },*/
                        this,
                        year,
                        month,
                        day
                );
        datepickerdialog.show();
    }

自定义datepicker应禁用周末

2 个答案: