DatePickerDialog.java revision 50f34d14f6dd3411fdbdb6a7b8b285c2b8fdbf5c 
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.Build;
25import android.os.Bundle;
26import android.view.LayoutInflater;
27import android.view.View;
28import android.widget.DatePicker;
29import android.widget.DatePicker.OnDateChangedListener;
30
31/**
32 * A simple dialog containing an {@link android.widget.DatePicker}.
33 *
34 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-datepicker.html">Date Picker
35 * tutorial</a>.</p>
36 */
37public class DatePickerDialog extends AlertDialog implements OnClickListener,
38        OnDateChangedListener {
39
40    private static final String YEAR = "year";
41    private static final String MONTH = "month";
42    private static final String DAY = "day";
43
44    private final DatePicker mDatePicker;
45    private final OnDateSetListener mCallBack;
46
47    /**
48     * The callback used to indicate the user is done filling in the date.
49     */
50    public interface OnDateSetListener {
51
52        /**
53         * @param view The view associated with this listener.
54         * @param year The year that was set.
55         * @param monthOfYear The month that was set (0-11) for compatibility
56         *  with {@link java.util.Calendar}.
57         * @param dayOfMonth The day of the month that was set.
58         */
59        void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth);
60    }
61
62    /**
63     * @param context The context the dialog is to run in.
64     * @param callBack How the parent is notified that the date is set.
65     * @param year The initial year of the dialog.
66     * @param monthOfYear The initial month of the dialog.
67     * @param dayOfMonth The initial day of the dialog.
68     */
69    public DatePickerDialog(Context context,
70            OnDateSetListener callBack,
71            int year,
72            int monthOfYear,
73            int dayOfMonth) {
74        this(context, context.getApplicationInfo().targetSdkVersion >= Build.VERSION_CODES.HONEYCOMB
75                        ? com.android.internal.R.style.Theme_Holo_Dialog_Alert
76                        : com.android.internal.R.style.Theme_Dialog_Alert,
77                callBack, year, monthOfYear, dayOfMonth);
78    }
79
80    /**
81     * @param context The context the dialog is to run in.
82     * @param theme the theme to apply to this dialog
83     * @param callBack How the parent is notified that the date is set.
84     * @param year The initial year of the dialog.
85     * @param monthOfYear The initial month of the dialog.
86     * @param dayOfMonth The initial day of the dialog.
87     */
88    public DatePickerDialog(Context context,
89            int theme,
90            OnDateSetListener callBack,
91            int year,
92            int monthOfYear,
93            int dayOfMonth) {
94        super(context, theme);
95
96        mCallBack = callBack;
97
98        setButton(BUTTON_POSITIVE, context.getText(R.string.date_time_set), this);
99        setButton(BUTTON_NEGATIVE, context.getText(R.string.cancel), (OnClickListener) null);
100        setIcon(0);
101        setTitle(R.string.date_picker_dialog_title);
102
103        LayoutInflater inflater =
104                (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
105        View view = inflater.inflate(R.layout.date_picker_dialog, null);
106        setView(view);
107        mDatePicker = (DatePicker) view.findViewById(R.id.datePicker);
108        mDatePicker.init(year, monthOfYear, dayOfMonth, this);
109    }
110
111    public void onClick(DialogInterface dialog, int which) {
112        if (mCallBack != null) {
113            mDatePicker.clearFocus();
114            mCallBack.onDateSet(mDatePicker, mDatePicker.getYear(),
115                    mDatePicker.getMonth(), mDatePicker.getDayOfMonth());
116        }
117    }
118
119    public void onDateChanged(DatePicker view, int year,
120            int month, int day) {
121        mDatePicker.init(year, month, day, null);
122    }
123
124    public void updateDate(int year, int monthOfYear, int dayOfMonth) {
125        mDatePicker.updateDate(year, monthOfYear, dayOfMonth);
126    }
127
128    @Override
129    public Bundle onSaveInstanceState() {
130        Bundle state = super.onSaveInstanceState();
131        state.putInt(YEAR, mDatePicker.getYear());
132        state.putInt(MONTH, mDatePicker.getMonth());
133        state.putInt(DAY, mDatePicker.getDayOfMonth());
134        return state;
135    }
136
137    @Override
138    public void onRestoreInstanceState(Bundle savedInstanceState) {
139        super.onRestoreInstanceState(savedInstanceState);
140        int year = savedInstanceState.getInt(YEAR);
141        int month = savedInstanceState.getInt(MONTH);
142        int day = savedInstanceState.getInt(DAY);
143        mDatePicker.init(year, month, day, this);
144    }
145}
146