TimePickerDialog.java revision eeff63a5c347f282b5c8c3ae6a0924bf03fbce8f 
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 android.content.Context;
20import android.content.DialogInterface;
21import android.content.DialogInterface.OnClickListener;
22import android.os.Bundle;
23import android.util.TypedValue;
24import android.view.LayoutInflater;
25import android.view.View;
26import android.widget.TimePicker;
27import android.widget.TimePicker.OnTimeChangedListener;
28
29import com.android.internal.R;
30
31
32/**
33 * A dialog that prompts the user for the time of day using a {@link TimePicker}.
34 *
35 * <p>See the <a href="{@docRoot}guide/topics/ui/controls/pickers.html">Pickers</a>
36 * guide.</p>
37 */
38public class TimePickerDialog extends AlertDialog
39        implements OnClickListener, OnTimeChangedListener {
40
41    /**
42     * The callback interface used to indicate the user is done filling in
43     * the time (they clicked on the 'Done' button).
44     */
45    public interface OnTimeSetListener {
46
47        /**
48         * @param view The view associated with this listener.
49         * @param hourOfDay The hour that was set.
50         * @param minute The minute that was set.
51         */
52        void onTimeSet(TimePicker view, int hourOfDay, int minute);
53    }
54
55    private static final String HOUR = "hour";
56    private static final String MINUTE = "minute";
57    private static final String IS_24_HOUR = "is24hour";
58
59    private final TimePicker mTimePicker;
60    private final OnTimeSetListener mTimeSetCallback;
61
62    int mInitialHourOfDay;
63    int mInitialMinute;
64    boolean mIs24HourView;
65
66    /**
67     * @param context Parent.
68     * @param callBack How parent is notified.
69     * @param hourOfDay The initial hour.
70     * @param minute The initial minute.
71     * @param is24HourView Whether this is a 24 hour view, or AM/PM.
72     */
73    public TimePickerDialog(Context context,
74            OnTimeSetListener callBack,
75            int hourOfDay, int minute, boolean is24HourView) {
76        this(context, 0, callBack, hourOfDay, minute, is24HourView);
77    }
78
79    static int resolveDialogTheme(Context context, int resid) {
80        if (resid == 0) {
81            TypedValue outValue = new TypedValue();
82            context.getTheme().resolveAttribute(R.attr.timePickerDialogTheme, outValue, true);
83            return outValue.resourceId;
84        } else {
85            return resid;
86        }
87    }
88
89    /**
90     * @param context Parent.
91     * @param theme the theme to apply to this dialog
92     * @param callBack How parent is notified.
93     * @param hourOfDay The initial hour.
94     * @param minute The initial minute.
95     * @param is24HourView Whether this is a 24 hour view, or AM/PM.
96     */
97    public TimePickerDialog(Context context,
98            int theme,
99            OnTimeSetListener callBack,
100            int hourOfDay, int minute, boolean is24HourView) {
101        super(context, resolveDialogTheme(context, theme));
102        mTimeSetCallback = callBack;
103        mInitialHourOfDay = hourOfDay;
104        mInitialMinute = minute;
105        mIs24HourView = is24HourView;
106
107        Context themeContext = getContext();
108
109        LayoutInflater inflater =
110                (LayoutInflater) themeContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
111        View view = inflater.inflate(R.layout.time_picker_dialog, null);
112        setView(view);
113        mTimePicker = (TimePicker) view.findViewById(R.id.timePicker);
114
115        // Initialize state
116        mTimePicker.setLegacyMode(false /* will show new UI */);
117        mTimePicker.setShowDoneButton(true);
118        mTimePicker.setDismissCallback(new TimePicker.TimePickerDismissCallback() {
119            @Override
120            public void dismiss(TimePicker view, boolean isCancel, int hourOfDay, int minute) {
121                if (!isCancel) {
122                    mTimeSetCallback.onTimeSet(view, hourOfDay, minute);
123                }
124                TimePickerDialog.this.dismiss();
125            }
126        });
127        mTimePicker.setIs24HourView(mIs24HourView);
128        mTimePicker.setCurrentHour(mInitialHourOfDay);
129        mTimePicker.setCurrentMinute(mInitialMinute);
130        mTimePicker.setOnTimeChangedListener(this);
131    }
132
133    public void onClick(DialogInterface dialog, int which) {
134        tryNotifyTimeSet();
135    }
136
137    public void updateTime(int hourOfDay, int minutOfHour) {
138        mTimePicker.setCurrentHour(hourOfDay);
139        mTimePicker.setCurrentMinute(minutOfHour);
140    }
141
142    public void onTimeChanged(TimePicker view, int hourOfDay, int minute) {
143        /* do nothing */
144    }
145
146    private void tryNotifyTimeSet() {
147        if (mTimeSetCallback != null) {
148            mTimePicker.clearFocus();
149            mTimeSetCallback.onTimeSet(mTimePicker, mTimePicker.getCurrentHour(),
150                    mTimePicker.getCurrentMinute());
151        }
152    }
153
154    @Override
155    protected void onStop() {
156        tryNotifyTimeSet();
157        super.onStop();
158    }
159
160    @Override
161    public Bundle onSaveInstanceState() {
162        Bundle state = super.onSaveInstanceState();
163        state.putInt(HOUR, mTimePicker.getCurrentHour());
164        state.putInt(MINUTE, mTimePicker.getCurrentMinute());
165        state.putBoolean(IS_24_HOUR, mTimePicker.is24HourView());
166        return state;
167    }
168
169    @Override
170    public void onRestoreInstanceState(Bundle savedInstanceState) {
171        super.onRestoreInstanceState(savedInstanceState);
172        int hour = savedInstanceState.getInt(HOUR);
173        int minute = savedInstanceState.getInt(MINUTE);
174        mTimePicker.setIs24HourView(savedInstanceState.getBoolean(IS_24_HOUR));
175        mTimePicker.setCurrentHour(hour);
176        mTimePicker.setCurrentMinute(minute);
177    }
178}
179