DatePickerDialog.java revision 9f086d812ff04703de4b14e02a7702ba7c8acb33 
1/*
2 * Copyright (C) 2007 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.app;
18
19import com.android.internal.R;
20
21import android.content.Context;
22import android.content.DialogInterface;
23import android.content.DialogInterface.OnClickListener;
24import android.os.Bundle;
25import android.view.LayoutInflater;
26import android.view.View;
27import android.widget.DatePicker;
28import android.widget.DatePicker.OnDateChangedListener;
29
30/**
31 * A simple dialog containing an {@link android.widget.DatePicker}.
32 *
33 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-datepicker.html">Date Picker
34 * tutorial</a>.</p>
35 */
36public class DatePickerDialog extends AlertDialog implements OnClickListener,
37        OnDateChangedListener {
38
39    private static final String YEAR = "year";
40    private static final String MONTH = "month";
41    private static final String DAY = "day";
42
43    private final DatePicker mDatePicker;
44    private final OnDateSetListener mCallBack;
45
46    /**
47     * The callback used to indicate the user is done filling in the date.
48     */
49    public interface OnDateSetListener {
50
51        /**
52         * @param view The view associated with this listener.
53         * @param year The year that was set.
54         * @param monthOfYear The month that was set (0-11) for compatibility
55         *  with {@link java.util.Calendar}.
56         * @param dayOfMonth The day of the month that was set.
57         */
58        void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth);
59    }
60
61    /**
62     * @param context The context the dialog is to run in.
63     * @param callBack How the parent is notified that the date is set.
64     * @param year The initial year of the dialog.
65     * @param monthOfYear The initial month of the dialog.
66     * @param dayOfMonth The initial day of the dialog.
67     */
68    public DatePickerDialog(Context context,
69            OnDateSetListener callBack,
70            int year,
71            int monthOfYear,
72            int dayOfMonth) {
73        this(context, 0, callBack, year, monthOfYear, dayOfMonth);
74    }
75
76    /**
77     * @param context The context the dialog is to run in.
78     * @param theme the theme to apply to this dialog
79     * @param callBack How the parent is notified that the date is set.
80     * @param year The initial year of the dialog.
81     * @param monthOfYear The initial month of the dialog.
82     * @param dayOfMonth The initial day of the dialog.
83     */
84    public DatePickerDialog(Context context,
85            int theme,
86            OnDateSetListener callBack,
87            int year,
88            int monthOfYear,
89            int dayOfMonth) {
90        super(context, theme);
91
92        mCallBack = callBack;
93
94        Context themeContext = getContext();
95        setButton(BUTTON_POSITIVE, themeContext.getText(R.string.date_time_set), this);
96        setButton(BUTTON_NEGATIVE, themeContext.getText(R.string.cancel), (OnClickListener) null);
97        setIcon(0);
98        setTitle(R.string.date_picker_dialog_title);
99
100        LayoutInflater inflater =
101                (LayoutInflater) themeContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
102        View view = inflater.inflate(R.layout.date_picker_dialog, null);
103        setView(view);
104        mDatePicker = (DatePicker) view.findViewById(R.id.datePicker);
105        mDatePicker.init(year, monthOfYear, dayOfMonth, this);
106    }
107
108    public void onClick(DialogInterface dialog, int which) {
109        if (mCallBack != null) {
110            mDatePicker.clearFocus();
111            mCallBack.onDateSet(mDatePicker, mDatePicker.getYear(),
112                    mDatePicker.getMonth(), mDatePicker.getDayOfMonth());
113        }
114    }
115
116    public void onDateChanged(DatePicker view, int year,
117            int month, int day) {
118        mDatePicker.init(year, month, day, null);
119    }
120
121    /**
122     * Gets the {@link DatePicker} contained in this dialog.
123     *
124     * @return The calendar view.
125     */
126    public DatePicker getDatePicker() {
127        return mDatePicker;
128    }
129
130    /**
131     * Sets the current date.
132     *
133     * @param year The date year.
134     * @param monthOfYear The date month.
135     * @param dayOfMonth The date day of month.
136     */
137    public void updateDate(int year, int monthOfYear, int dayOfMonth) {
138        mDatePicker.updateDate(year, monthOfYear, dayOfMonth);
139    }
140
141    @Override
142    public Bundle onSaveInstanceState() {
143        Bundle state = super.onSaveInstanceState();
144        state.putInt(YEAR, mDatePicker.getYear());
145        state.putInt(MONTH, mDatePicker.getMonth());
146        state.putInt(DAY, mDatePicker.getDayOfMonth());
147        return state;
148    }
149
150    @Override
151    public void onRestoreInstanceState(Bundle savedInstanceState) {
152        super.onRestoreInstanceState(savedInstanceState);
153        int year = savedInstanceState.getInt(YEAR);
154        int month = savedInstanceState.getInt(MONTH);
155        int day = savedInstanceState.getInt(DAY);
156        mDatePicker.init(year, month, day, this);
157    }
158}
159