不推荐使用ShowDIalog（）中的DatePickerDialog

Question

我有下一个代码：

dateDisplay1.setOnClickListener(new OnClickListener() {
@SuppressWarnings("deprecation")
    public void onClick(View v) {
        option = 1;
        showDialog(DATE_DIALOG_ID);
    }
});

onCreateDialog函数：

protected Dialog onCreateDialog(int id) {

    Calendar cal = Calendar.getInstance();

    switch (id) {
    case DATE_DIALOG_ID:
        return new DatePickerDialog(this, dayDate, cal.get(Calendar.YEAR),      cal.get(Calendar.MONTH), cal.get(Calendar.DAY_OF_MONTH));
    case TIME_DIALOG_ID:
        return new TimePickerDialog(this, timeDate, cal.get(Calendar.HOUR_OF_DAY), cal.get(Calendar.MINUTE), false);
    }
    return null;
}

我要做的是将不推荐使用的showDialog（）调整为DialogFragment，但没有成功。下面的代码有效但不是最佳实践。所以我想更正代码。

你应该如何实现？

Answer 1

public class ReminderEditActivity extends Activity {
    private Button mDateButton;
    private Button mTimeButton;
    public Calendar mCalendar;
    private static final String DATE_FORMAT = "yyyy-MM-dd";
    private static final String TIME_FORMAT = "kk:mm";
    DialogFragment dateFragment;
    DialogFragment timeFragment;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.reminder_edit);
        mTimeButton = (Button) findViewById(R.id.reminder_time);
        mDateButton = (Button) findViewById(R.id.reminder_date);
        mCalendar = Calendar.getInstance();
        mDateButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                showDatePickerDialog(v);
            }
            });
        mTimeButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                showTimePickerDialog(v);
            }
            });

    }

    public void showDatePickerDialog(View v) {
        dateFragment = new DatePickerFragment();
        dateFragment.show(getFragmentManager(), "datePicker");

    }

    public void showTimePickerDialog(View v) {
        timeFragment = new TimePickerFragment();
        timeFragment.show(getFragmentManager(), "timePicker");
    }

    public void updateDateButtonText() {
        SimpleDateFormat dateFormat = new SimpleDateFormat(DATE_FORMAT);
        String dateForButton = dateFormat.format(mCalendar.getTime());
        mDateButton.setText(dateForButton);
    }
    private void updateTimeButtonText() {
        SimpleDateFormat timeFormat = new SimpleDateFormat(TIME_FORMAT);
        String timeForButton = timeFormat.format(mCalendar.getTime());
        mTimeButton.setText(timeForButton);
        }

    class DatePickerFragment extends DialogFragment implements
            DatePickerDialog.OnDateSetListener {

        @Override
        public Dialog onCreateDialog(Bundle savedInstanceState) {
            // Use the current date as the default date in the picker
            final Calendar c = Calendar.getInstance();
            int year = c.get(Calendar.YEAR);
            int month = c.get(Calendar.MONTH);
            int day = c.get(Calendar.DAY_OF_MONTH);

            // Create a new instance of DatePickerDialog and return it
            return new DatePickerDialog(getActivity(), this, year, month, day);
        }

        public void onDateSet(DatePicker view, int year, int month, int day) {
            mCalendar.set(Calendar.YEAR, year);
            mCalendar.set(Calendar.MONTH, month);
            mCalendar.set(Calendar.DAY_OF_MONTH, day);
            updateDateButtonText();
        }
    }

    public class TimePickerFragment extends DialogFragment implements
            TimePickerDialog.OnTimeSetListener {

        @Override
        public Dialog onCreateDialog(Bundle savedInstanceState) {
            // Use the current time as the default values for the picker
            final Calendar c = Calendar.getInstance();
            int hour = c.get(Calendar.HOUR_OF_DAY);
            int minute = c.get(Calendar.MINUTE);

            // Create a new instance of TimePickerDialog and return it
            return new TimePickerDialog(getActivity(), this, hour, minute,
                    DateFormat.is24HourFormat(getActivity()));
        }

        public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
            mCalendar.set(Calendar.HOUR_OF_DAY, hourOfDay);
            mCalendar.set(Calendar.MINUTE, minute);
            updateTimeButtonText();
        }
    }

}

Answer 2

下面的代码有助于在我的适配器中限制过去几天的警告对话框中显示日历。

  changedate.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            if(type.equals("1") ) {

                DatePickerDialog.OnDateSetListener datePickerListener = new DatePickerDialog.OnDateSetListener() {

                    // when dialog box is closed, below method will be called.
                    public void onDateSet(DatePicker view, int selectedYear, int selectedMonth, int selectedDay) {
                        mmonth = selectedMonth;
                        mday = selectedDay;
                        myear = selectedYear;


                        changedate.setText(new StringBuilder()
                                .append(mday).append("-").append(mmonth + 1).append("-")
                                .append(myear).append(" "));

                    }

                };
                switch (DATE_DIALOG_ID) {
                    case DATE_DIALOG_ID:

                        dat1 = new DatePickerDialog(context, datePickerListener, myear, mmonth, mday);
                        c = Calendar.getInstance();
                        c.add(Calendar.DATE, 0);
                        Date newDate = c.getTime();
                        dat1.getDatePicker().setMinDate(newDate.getTime()-1000);
                        dat1.getDatePicker().setMinDate(newDate.getTime() - (newDate.getTime() % (24 * 60 * 60 * 1000)));
                        dat1.setButton(DatePickerDialog.BUTTON_POSITIVE, context.getString(R.string.ok), dat1);
                        dat1.setButton(DatePickerDialog.BUTTON_NEGATIVE, context.getString(R.string.cancel), dat1);


                }
                dat1.show();
            }

        }
    });