git/DateTimePickerDialog.java

package soc;

import android.app.DatePickerDialog;
import android.app.Dialog;
import android.app.TimePickerDialog;
import android.os.Bundle;
import android.annotation.NonNull;
import androidx.fragment.app.DialogFragment;
import android.widget.DatePicker;
import android.widget.TimePicker;

import java.util.Calendar;

public class DateTimePickerDialog extends DialogFragment
        implements DatePickerDialog.OnDateSetListener, TimePickerDialog.OnTimeSetListener {

    private static final String ARG_DATE = "date";
    private Calendar date;

    public static DateTimePickerDialog newInstance(Calendar initialDate) {
        DateTimePickerDialog dialog = new DateTimePickerDialog();
        Bundle args = new Bundle();
        args.putSerializable(ARG_DATE, initialDate);
        dialog.setArguments(args);
        return dialog;
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        if (getArguments() != null) {
            date = (Calendar) getArguments().getSerializable(ARG_DATE);
        }
        if (date == null) {
            date = Calendar.getInstance();
        }
    }

    @NonNull
    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        int year = date.get(Calendar.YEAR);
        int month = date.get(Calendar.MONTH);
        int day = date.get(Calendar.DAY_OF_MONTH);

        // 创建一个新的 DatePickerDialog 实例并返回
        return new DatePickerDialog(requireActivity(), this, year, month, day);
    }

    @Override
    public void onDateSet(DatePicker view, int year, int month, int day) {
        date.set(Calendar.YEAR, year);
        date.set(Calendar.MONTH, month);
        date.set(Calendar.DAY_OF_MONTH, day);

        int hour = date.get(Calendar.HOUR_OF_DAY);
        int minute = date.get(Calendar.MINUTE);

        // 创建新的 TimePickerDialog 实例并显示
        new TimePickerDialog(requireActivity(), this, hour, minute, true).show();
    }

    @Override
    public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
        date.set(Calendar.HOUR_OF_DAY, hourOfDay);
        date.set(Calendar.MINUTE, minute);

        // 通知监听器（如果有的话）关于选定的日期和时间
        if (getTargetFragment() != null && getTargetFragment() instanceof OnDateTimeSetListener) {
            ((OnDateTimeSetListener) getTargetFragment()).onDateTimeSet(date);
        } else if (getActivity() instanceof OnDateTimeSetListener) {
            ((OnDateTimeSetListener) getActivity()).onDateTimeSet(date);
        }
    }

    public interface OnDateTimeSetListener {
        void onDateTimeSet(Calendar date);
    }
}