java RPickerDialog易于使用和管理，并获得不同的日期格式，以便快速开发DatePicker

Posted 2021-05-08

import android.app.DatePickerDialog;
import android.app.TimePickerDialog;
import android.content.Context;
import android.support.annotation.Nullable;
import android.widget.DatePicker;
import android.widget.TimePicker;
import android.widget.Toast;

import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Locale;

/**
 * Created by root on 28/2/18.
 */

public class RPickerDialog {

    public static SimpleDateFormat formatDate = new SimpleDateFormat("yyyy-MM-dd");
    public static SimpleDateFormat formatTime24 = new SimpleDateFormat("HH:mm:ss");
    public static SimpleDateFormat formatTime12 = new SimpleDateFormat("hh:mm a");

    private static Context context;
    private static RPickerDialog instance = new RPickerDialog();
    private static Calendar calendar;

    private String anything = null;
    private boolean is24Hour = false;

    private RPickerDialog() {}

    public static RPickerDialog get(Context context) {
        if (instance == null)
            instance = new RPickerDialog();

        if (calendar == null)
            calendar = Calendar.getInstance(Locale.getDefault());

        instance.context = context;

        return instance;
    }

    public RDatePicker datePicker(@Nullable final String anything) {
        this.anything= anything;
        return new RDatePicker();
    }

    public RTimePicker timePicker(@Nullable final String anything, boolean is24Hour) {
        this.anything = anything;
        this.is24Hour = is24Hour;
        return new RTimePicker();
    }

    public RTimePicker timePicker(@Nullable final String anything) {
        this.anything = anything;
        this.is24Hour = false;
        return new RTimePicker();
    }

    /**
     * This class will provide Date Picker functionality
     */
    public class RDatePicker {

        private onSelectListener listener;
        private SimpleDateFormat dateFormat;
        private Calendar calDate;

        public RDatePicker() {
            calDate = Calendar.getInstance();
        }

        public RDatePicker addListener(onSelectListener listener) {
            this.listener = listener;
            return this;
        }

        public RDatePicker format(SimpleDateFormat dateFormat) {
            this.dateFormat = dateFormat;
            return this;
        }

        public void show() {
            new DatePickerDialog(
                    context,
                    onDateSetListener,
                    calendar.get(Calendar.YEAR),
                    calendar.get(Calendar.MONTH),
                    calendar.get(Calendar.DAY_OF_MONTH)
            ).show();
        }

        DatePickerDialog.OnDateSetListener onDateSetListener = new DatePickerDialog.OnDateSetListener() {
            @Override
            public void onDateSet(DatePicker datePicker, int i, int i1, int i2) {
                calDate.set(datePicker.getYear(), datePicker.getMonth(), datePicker.getDayOfMonth());
                if (listener == null) {
                    Toast.makeText(context, "Please attach the listener", Toast.LENGTH_SHORT).show();
                } else if (dateFormat == null){
                    listener.onSelection(
                            calDate.getTime().toString(),
                            formatDate.format(calDate.getTime()),
                            anything
                    );
                } else {
                    listener.onSelection(
                            dateFormat.format(calDate.getTime()),
                            formatDate.format(calDate.getTime()),
                            anything
                    );
                }
            }
        };
    }

    /**
     * This class will provide Time Picker functionality
     */
    public class RTimePicker {
        private onSelectListener listener;
        private Calendar calTime;

        public RTimePicker() {
            calTime = Calendar.getInstance();
        }

        public RTimePicker addListener(onSelectListener listener) {
            this.listener = listener;
            return this;
        }

        public void show() {
            new TimePickerDialog(
                    context,
                    onTimeSetListener,
                    calendar.get(Calendar.HOUR_OF_DAY),
                    calendar.get(Calendar.MINUTE),
                    is24Hour
            ).show();
        }

        TimePickerDialog.OnTimeSetListener onTimeSetListener = new TimePickerDialog.OnTimeSetListener() {
            @Override
            public void onTimeSet(TimePicker timePicker, int i, int i1) {
                calTime.set(
                        calendar.get(Calendar.YEAR),
                        calendar.get(Calendar.MONTH),
                        calendar.get(Calendar.DAY_OF_MONTH),
                        i,
                        i1
                );

                if (listener == null) {
                    Toast.makeText(context, "Please attach the listener", Toast.LENGTH_SHORT).show();
                } else {
                    listener.onSelection(
                            formatTime12.format(calTime.getTime()),
                            formatTime24.format(calTime.getTime()),
                            anything
                    );
                }
            }
        };
    }

    public interface onSelectListener {
        void onSelection(String formattedValue, String forDatabase, @Nullable String myAnything);
    }
}