Android Open Source - datetimepicker_android Date Time Picker

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License

The source code is released under:

Apache License

Java Source Code

/**
 * Copyright 2010 Lukasz Szmit <devmail@szmit.eu>
/*  www .j a v a 2 s. c  om*/
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.

*/

/* MED, 1/5/2014
 * Changes made:
 * 1. Updated layout xml to hide calendarView from datePicker
 * 2. Add ability to set, initialize time in ms (epoch)
 * 
 */
package com.widgets.datetimepicker;

import java.util.Calendar;

import android.content.Context;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.DatePicker.OnDateChangedListener;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.TimePicker;
import android.widget.TimePicker.OnTimeChangedListener;
import android.widget.ViewSwitcher;

import com.ptashek.demo.datetimepicker.R;

public class DateTimePicker extends RelativeLayout implements View.OnClickListener, OnDateChangedListener, OnTimeChangedListener {

  // DatePicker reference
  private DatePicker    datePicker;
  // TimePicker reference
  private TimePicker    timePicker;
  // ViewSwitcher reference
  private ViewSwitcher  viewSwitcher;
  // Calendar reference
  private Calendar    mCalendar;
  // Min/max dates allowed; no null for longs, so use Long.MIN_VALUE instead
  private long      minDate = Long.MIN_VALUE, maxDate = Long.MIN_VALUE;

  // Constructor start
  public DateTimePicker(Context context) {
    this(context, null);
  }

  public DateTimePicker(Context context, AttributeSet attrs) {
    this(context, attrs, 0);
  }

  public DateTimePicker(Context context, AttributeSet attrs, int defStyle) {
    this(context, attrs, defStyle, Calendar.getInstance().getTimeInMillis());
  }
  
  public DateTimePicker(Context context, AttributeSet attrs, int defStyle, long dateTimeMillis) {
    super(context, attrs, defStyle);

    // Get LayoutInflater instance
    LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    // Inflate myself
    inflater.inflate(R.layout.datetimepicker, this, true);

    // Inflate the date and time picker views
    LinearLayout datePickerView = (LinearLayout) inflater.inflate(R.layout.datepicker, null);
    datePicker = (DatePicker) datePickerView.findViewById(R.id.DatePicker);
    LinearLayout timePickerView = (LinearLayout) inflater.inflate(R.layout.timepicker, null);
    timePicker = (TimePicker) timePickerView.findViewById(R.id.TimePicker);

    // Grab a Calendar instance
    mCalendar = Calendar.getInstance();
    mCalendar.setTimeInMillis(dateTimeMillis);
    
    // Init date picker
    datePicker.init(mCalendar.get(Calendar.YEAR), mCalendar.get(Calendar.MONTH), mCalendar.get(Calendar.DAY_OF_MONTH), this);

    // Init time picker
    timePicker.setCurrentHour(mCalendar.get(Calendar.HOUR_OF_DAY));
    timePicker.setCurrentMinute(mCalendar.get(Calendar.MINUTE));
    timePicker.setOnTimeChangedListener(this);

    // Grab the ViewSwitcher so we can attach our picker views to it
    viewSwitcher = (ViewSwitcher) this.findViewById(R.id.DateTimePickerVS);

    // Handle button clicks
    ((Button) findViewById(R.id.SwitchToTime)).setOnClickListener(this); // shows the time picker
    ((Button) findViewById(R.id.SwitchToDate)).setOnClickListener(this); // shows the date picker

    // Populate ViewSwitcher
    viewSwitcher.addView(datePickerView, 0);
    viewSwitcher.addView(timePickerView, 1);
  }
  // Constructor end

  // Called every time the user changes DatePicker values
  public void onDateChanged(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
    // Update the internal Calendar instance
    mCalendar.set(year, monthOfYear, dayOfMonth, mCalendar.get(Calendar.HOUR_OF_DAY), mCalendar.get(Calendar.MINUTE));
  }

  // Called every time the user changes TimePicker values
  public void onTimeChanged(TimePicker view, int hourOfDay, int minute) {
    // Update the internal Calendar instance
    mCalendar.set(mCalendar.get(Calendar.YEAR), mCalendar.get(Calendar.MONTH), mCalendar.get(Calendar.DAY_OF_MONTH), hourOfDay, minute);
  }

  // Handle button clicks
  public void onClick(View v) {
    int id = v.getId();
    if (id == R.id.SwitchToDate) {
      v.setEnabled(false);
      findViewById(R.id.SwitchToTime).setEnabled(true);
      viewSwitcher.showPrevious();
    } else if (id == R.id.SwitchToTime) {
      v.setEnabled(false);
      findViewById(R.id.SwitchToDate).setEnabled(true);
      viewSwitcher.showNext();
    }
  }

  // Convenience wrapper for internal Calendar instance
  public int get(final int field) {
    return mCalendar.get(field);
  }

  // Reset DatePicker, TimePicker and internal Calendar instance
  public void reset() {
/*    final Calendar c = Calendar.getInstance();
    updateDate(c.get(Calendar.YEAR), c.get(Calendar.MONTH), c.get(Calendar.DAY_OF_MONTH));
    updateTime(c.get(Calendar.HOUR_OF_DAY),c.get(Calendar.MINUTE));*/
    setDateTimeMillis(Calendar.getInstance().getTimeInMillis());
  }

  // Convenience wrapper for internal Calendar instance
  public long getDateTimeMillis() {
    return mCalendar.getTimeInMillis();
  }
  public void setDateTimeMillis(long dateTimeMillis) {
    Calendar cal = Calendar.getInstance();
    cal.setTimeInMillis(dateTimeMillis);
    updateDate(cal.get(Calendar.YEAR), cal.get(Calendar.MONTH), cal.get(Calendar.DAY_OF_MONTH));
    updateTime(cal.get(Calendar.HOUR_OF_DAY), cal.get(Calendar.MINUTE));
  }

  // Convenience wrapper for internal TimePicker instance
  public void setIs24HourView(boolean is24HourView) {
    timePicker.setIs24HourView(is24HourView);
  }
  
  // Convenience wrapper for internal TimePicker instance
  public boolean is24HourView() {
    return timePicker.is24HourView();
  }

  /** If there's a minimum bound on the choosable date, this will return it; or Long.MIN_VALUE if no bound set **/
  public long getMinDate() {
    return minDate;
  }

  public void setMinDate(long minDate) {
    this.minDate = minDate;
    datePicker.setMinDate(minDate);
  }
  /** If there's a maximum bound on the choosable date, this will return it; or Long.MIN_VALUE if no bound set **/
  public long getMaxDate() {
    return maxDate;
  }

  public void setMaxDate(long maxDate) {
    this.maxDate = maxDate;
    datePicker.setMaxDate(maxDate);
  }

  // Convenience wrapper for internal DatePicker instance
  public void updateDate(int year, int monthOfYear, int dayOfMonth) {
    datePicker.updateDate(year, monthOfYear, dayOfMonth);
  }

  // Convenience wrapper for internal TimePicker instance
  public void updateTime(int currentHour, int currentMinute) {
    timePicker.setCurrentHour(currentHour);
    timePicker.setCurrentMinute(currentMinute);
  }
}

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