2 * Copyright (C) 2008 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 package com.android.settings;
19 import android.app.Activity;
20 import android.app.DatePickerDialog;
21 import android.app.Dialog;
22 import android.app.TimePickerDialog;
23 import android.content.BroadcastReceiver;
24 import android.content.Context;
25 import android.content.Intent;
26 import android.content.IntentFilter;
27 import android.content.SharedPreferences;
28 import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
29 import android.os.Bundle;
30 import android.os.SystemClock;
31 import android.preference.CheckBoxPreference;
32 import android.preference.ListPreference;
33 import android.preference.Preference;
34 import android.preference.PreferenceScreen;
35 import android.provider.Settings;
36 import android.provider.Settings.SettingNotFoundException;
37 import android.text.format.DateFormat;
38 import android.widget.DatePicker;
39 import android.widget.TimePicker;
41 import java.util.Calendar;
42 import java.util.Date;
43 import java.util.TimeZone;
45 public class DateTimeSettings extends SettingsPreferenceFragment
46 implements OnSharedPreferenceChangeListener,
47 TimePickerDialog.OnTimeSetListener, DatePickerDialog.OnDateSetListener {
49 private static final String HOURS_12 = "12";
50 private static final String HOURS_24 = "24";
52 // Used for showing the current date format, which looks like "12/31/2010", "2010/12/13", etc.
53 // The date value is dummy (independent of actual date).
54 private Calendar mDummyDate;
56 private static final String KEY_DATE_FORMAT = "date_format";
57 private static final String KEY_AUTO_TIME = "auto_time";
58 private static final String KEY_AUTO_TIME_ZONE = "auto_zone";
60 private static final int DIALOG_DATEPICKER = 0;
61 private static final int DIALOG_TIMEPICKER = 1;
63 private CheckBoxPreference mAutoTimePref;
64 private Preference mTimePref;
65 private Preference mTime24Pref;
66 private CheckBoxPreference mAutoTimeZonePref;
67 private Preference mTimeZone;
68 private Preference mDatePref;
69 private ListPreference mDateFormat;
72 public void onCreate(Bundle icicle) {
73 super.onCreate(icicle);
75 addPreferencesFromResource(R.xml.date_time_prefs);
80 private void initUI() {
81 boolean autoTimeEnabled = getAutoState(Settings.System.AUTO_TIME);
82 boolean autoTimeZoneEnabled = getAutoState(Settings.System.AUTO_TIME_ZONE);
84 mDummyDate = Calendar.getInstance();
85 mDummyDate.set(mDummyDate.get(Calendar.YEAR), 11, 31, 13, 0, 0);
87 mAutoTimePref = (CheckBoxPreference) findPreference(KEY_AUTO_TIME);
88 mAutoTimePref.setChecked(autoTimeEnabled);
89 mAutoTimeZonePref = (CheckBoxPreference) findPreference(KEY_AUTO_TIME_ZONE);
90 mAutoTimeZonePref.setChecked(autoTimeZoneEnabled);
92 mTimePref = findPreference("time");
93 mTime24Pref = findPreference("24 hour");
94 mTimeZone = findPreference("timezone");
95 mDatePref = findPreference("date");
96 mDateFormat = (ListPreference) findPreference(KEY_DATE_FORMAT);
98 String [] dateFormats = getResources().getStringArray(R.array.date_format_values);
99 String [] formattedDates = new String[dateFormats.length];
100 String currentFormat = getDateFormat();
101 // Initialize if DATE_FORMAT is not set in the system settings
102 // This can happen after a factory reset (or data wipe)
103 if (currentFormat == null) {
106 for (int i = 0; i < formattedDates.length; i++) {
108 DateFormat.getDateFormatForSetting(getActivity(), dateFormats[i])
109 .format(mDummyDate.getTime());
111 if (dateFormats[i].length() == 0) {
112 formattedDates[i] = getResources().
113 getString(R.string.normal_date_format, formatted);
115 formattedDates[i] = formatted;
119 mDateFormat.setEntries(formattedDates);
120 mDateFormat.setEntryValues(R.array.date_format_values);
121 mDateFormat.setValue(currentFormat);
123 mTimePref.setEnabled(!autoTimeEnabled);
124 mDatePref.setEnabled(!autoTimeEnabled);
125 mTimeZone.setEnabled(!autoTimeZoneEnabled);
130 public void onResume() {
133 getPreferenceScreen().getSharedPreferences()
134 .registerOnSharedPreferenceChangeListener(this);
136 ((CheckBoxPreference)mTime24Pref).setChecked(is24Hour());
138 // Register for time ticks and other reasons for time change
139 IntentFilter filter = new IntentFilter();
140 filter.addAction(Intent.ACTION_TIME_TICK);
141 filter.addAction(Intent.ACTION_TIME_CHANGED);
142 filter.addAction(Intent.ACTION_TIMEZONE_CHANGED);
143 getActivity().registerReceiver(mIntentReceiver, filter, null, null);
145 updateTimeAndDateDisplay(getActivity());
149 public void onPause() {
151 getActivity().unregisterReceiver(mIntentReceiver);
152 getPreferenceScreen().getSharedPreferences()
153 .unregisterOnSharedPreferenceChangeListener(this);
156 private void updateTimeAndDateDisplay(Context context) {
157 java.text.DateFormat shortDateFormat = DateFormat.getDateFormat(context);
158 final Calendar now = Calendar.getInstance();
159 Date dummyDate = mDummyDate.getTime();
160 mTimePref.setSummary(DateFormat.getTimeFormat(getActivity()).format(now.getTime()));
161 mTimeZone.setSummary(getTimeZoneText(now.getTimeZone()));
162 mDatePref.setSummary(shortDateFormat.format(now.getTime()));
163 mDateFormat.setSummary(shortDateFormat.format(dummyDate));
167 public void onDateSet(DatePicker view, int year, int month, int day) {
168 setDate(year, month, day);
169 final Activity activity = getActivity();
170 if (activity != null) {
171 updateTimeAndDateDisplay(activity);
176 public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
177 setTime(hourOfDay, minute);
178 final Activity activity = getActivity();
179 if (activity != null) {
180 updateTimeAndDateDisplay(activity);
183 // We don't need to call timeUpdated() here because the TIME_CHANGED
184 // broadcast is sent by the AlarmManager as a side effect of setting the
189 public void onSharedPreferenceChanged(SharedPreferences preferences, String key) {
190 if (key.equals(KEY_DATE_FORMAT)) {
191 String format = preferences.getString(key,
192 getResources().getString(R.string.default_date_format));
193 Settings.System.putString(getContentResolver(),
194 Settings.System.DATE_FORMAT, format);
195 updateTimeAndDateDisplay(getActivity());
196 } else if (key.equals(KEY_AUTO_TIME)) {
197 boolean autoEnabled = preferences.getBoolean(key, true);
198 Settings.System.putInt(getContentResolver(), Settings.System.AUTO_TIME,
199 autoEnabled ? 1 : 0);
200 mTimePref.setEnabled(!autoEnabled);
201 mDatePref.setEnabled(!autoEnabled);
202 } else if (key.equals(KEY_AUTO_TIME_ZONE)) {
203 boolean autoZoneEnabled = preferences.getBoolean(key, true);
204 Settings.System.putInt(
205 getContentResolver(), Settings.System.AUTO_TIME_ZONE, autoZoneEnabled ? 1 : 0);
206 mTimeZone.setEnabled(!autoZoneEnabled);
211 public Dialog onCreateDialog(int id) {
215 case DIALOG_DATEPICKER: {
216 final Calendar calendar = Calendar.getInstance();
217 d = new DatePickerDialog(
220 calendar.get(Calendar.YEAR),
221 calendar.get(Calendar.MONTH),
222 calendar.get(Calendar.DAY_OF_MONTH));
225 case DIALOG_TIMEPICKER: {
226 final Calendar calendar = Calendar.getInstance();
227 d = new TimePickerDialog(
230 calendar.get(Calendar.HOUR_OF_DAY),
231 calendar.get(Calendar.MINUTE),
232 DateFormat.is24HourFormat(getActivity()));
245 public void onPrepareDialog(int id, Dialog d) {
247 case DIALOG_DATEPICKER: {
248 DatePickerDialog datePicker = (DatePickerDialog)d;
249 final Calendar calendar = Calendar.getInstance();
250 datePicker.updateDate(
251 calendar.get(Calendar.YEAR),
252 calendar.get(Calendar.MONTH),
253 calendar.get(Calendar.DAY_OF_MONTH));
256 case DIALOG_TIMEPICKER: {
257 TimePickerDialog timePicker = (TimePickerDialog)d;
258 final Calendar calendar = Calendar.getInstance();
259 timePicker.updateTime(
260 calendar.get(Calendar.HOUR_OF_DAY),
261 calendar.get(Calendar.MINUTE));
270 public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) {
271 if (preference == mDatePref) {
272 showDialog(DIALOG_DATEPICKER);
273 } else if (preference == mTimePref) {
274 // The 24-hour mode may have changed, so recreate the dialog
275 removeDialog(DIALOG_TIMEPICKER);
276 showDialog(DIALOG_TIMEPICKER);
277 } else if (preference == mTime24Pref) {
278 set24Hour(((CheckBoxPreference)mTime24Pref).isChecked());
279 updateTimeAndDateDisplay(getActivity());
282 return super.onPreferenceTreeClick(preferenceScreen, preference);
286 public void onActivityResult(int requestCode, int resultCode,
288 updateTimeAndDateDisplay(getActivity());
291 private void timeUpdated() {
292 Intent timeChanged = new Intent(Intent.ACTION_TIME_CHANGED);
293 getActivity().sendBroadcast(timeChanged);
296 /* Get & Set values from the system settings */
298 private boolean is24Hour() {
299 return DateFormat.is24HourFormat(getActivity());
302 private void set24Hour(boolean is24Hour) {
303 Settings.System.putString(getContentResolver(),
304 Settings.System.TIME_12_24,
305 is24Hour? HOURS_24 : HOURS_12);
308 private String getDateFormat() {
309 return Settings.System.getString(getContentResolver(),
310 Settings.System.DATE_FORMAT);
313 private boolean getAutoState(String name) {
315 return Settings.System.getInt(getContentResolver(), name) > 0;
316 } catch (SettingNotFoundException snfe) {
321 /* Helper routines to format timezone */
323 /* package */ static void setDate(int year, int month, int day) {
324 Calendar c = Calendar.getInstance();
326 c.set(Calendar.YEAR, year);
327 c.set(Calendar.MONTH, month);
328 c.set(Calendar.DAY_OF_MONTH, day);
329 long when = c.getTimeInMillis();
331 if (when / 1000 < Integer.MAX_VALUE) {
332 SystemClock.setCurrentTimeMillis(when);
336 /* package */ static void setTime(int hourOfDay, int minute) {
337 Calendar c = Calendar.getInstance();
339 c.set(Calendar.HOUR_OF_DAY, hourOfDay);
340 c.set(Calendar.MINUTE, minute);
341 long when = c.getTimeInMillis();
343 if (when / 1000 < Integer.MAX_VALUE) {
344 SystemClock.setCurrentTimeMillis(when);
348 /* package */ static String getTimeZoneText(TimeZone tz) {
349 boolean daylight = tz.inDaylightTime(new Date());
350 StringBuilder sb = new StringBuilder();
352 sb.append(formatOffset(tz.getRawOffset() +
353 (daylight ? tz.getDSTSavings() : 0))).
355 append(tz.getDisplayName(daylight, TimeZone.LONG));
357 return sb.toString();
360 private static char[] formatOffset(int off) {
361 off = off / 1000 / 60;
363 char[] buf = new char[9];
375 int hours = off / 60;
376 int minutes = off % 60;
378 buf[4] = (char) ('0' + hours / 10);
379 buf[5] = (char) ('0' + hours % 10);
383 buf[7] = (char) ('0' + minutes / 10);
384 buf[8] = (char) ('0' + minutes % 10);
389 private BroadcastReceiver mIntentReceiver = new BroadcastReceiver() {
391 public void onReceive(Context context, Intent intent) {
392 final Activity activity = getActivity();
393 if (activity != null) {
394 updateTimeAndDateDisplay(activity);