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 // Override auto-timezone if it's a wifi-only device.
91 // TODO: Remove this when auto-timezone is implemented based on wifi-location.
92 if (Utils.isWifiOnly()) {
93 getPreferenceScreen().removePreference(mAutoTimeZonePref);
94 autoTimeZoneEnabled = false;
96 mAutoTimeZonePref.setChecked(autoTimeZoneEnabled);
98 mTimePref = findPreference("time");
99 mTime24Pref = findPreference("24 hour");
100 mTimeZone = findPreference("timezone");
101 mDatePref = findPreference("date");
102 mDateFormat = (ListPreference) findPreference(KEY_DATE_FORMAT);
104 String [] dateFormats = getResources().getStringArray(R.array.date_format_values);
105 String [] formattedDates = new String[dateFormats.length];
106 String currentFormat = getDateFormat();
107 // Initialize if DATE_FORMAT is not set in the system settings
108 // This can happen after a factory reset (or data wipe)
109 if (currentFormat == null) {
112 for (int i = 0; i < formattedDates.length; i++) {
114 DateFormat.getDateFormatForSetting(getActivity(), dateFormats[i])
115 .format(mDummyDate.getTime());
117 if (dateFormats[i].length() == 0) {
118 formattedDates[i] = getResources().
119 getString(R.string.normal_date_format, formatted);
121 formattedDates[i] = formatted;
125 mDateFormat.setEntries(formattedDates);
126 mDateFormat.setEntryValues(R.array.date_format_values);
127 mDateFormat.setValue(currentFormat);
129 mTimePref.setEnabled(!autoTimeEnabled);
130 mDatePref.setEnabled(!autoTimeEnabled);
131 mTimeZone.setEnabled(!autoTimeZoneEnabled);
135 public void onResume() {
138 getPreferenceScreen().getSharedPreferences()
139 .registerOnSharedPreferenceChangeListener(this);
141 ((CheckBoxPreference)mTime24Pref).setChecked(is24Hour());
143 // Register for time ticks and other reasons for time change
144 IntentFilter filter = new IntentFilter();
145 filter.addAction(Intent.ACTION_TIME_TICK);
146 filter.addAction(Intent.ACTION_TIME_CHANGED);
147 filter.addAction(Intent.ACTION_TIMEZONE_CHANGED);
148 getActivity().registerReceiver(mIntentReceiver, filter, null, null);
150 updateTimeAndDateDisplay(getActivity());
154 public void onPause() {
156 getActivity().unregisterReceiver(mIntentReceiver);
157 getPreferenceScreen().getSharedPreferences()
158 .unregisterOnSharedPreferenceChangeListener(this);
161 private void updateTimeAndDateDisplay(Context context) {
162 java.text.DateFormat shortDateFormat = DateFormat.getDateFormat(context);
163 final Calendar now = Calendar.getInstance();
164 Date dummyDate = mDummyDate.getTime();
165 mTimePref.setSummary(DateFormat.getTimeFormat(getActivity()).format(now.getTime()));
166 mTimeZone.setSummary(getTimeZoneText(now.getTimeZone()));
167 mDatePref.setSummary(shortDateFormat.format(now.getTime()));
168 mDateFormat.setSummary(shortDateFormat.format(dummyDate));
172 public void onDateSet(DatePicker view, int year, int month, int day) {
173 setDate(year, month, day);
174 final Activity activity = getActivity();
175 if (activity != null) {
176 updateTimeAndDateDisplay(activity);
181 public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
182 setTime(hourOfDay, minute);
183 final Activity activity = getActivity();
184 if (activity != null) {
185 updateTimeAndDateDisplay(activity);
188 // We don't need to call timeUpdated() here because the TIME_CHANGED
189 // broadcast is sent by the AlarmManager as a side effect of setting the
194 public void onSharedPreferenceChanged(SharedPreferences preferences, String key) {
195 if (key.equals(KEY_DATE_FORMAT)) {
196 String format = preferences.getString(key,
197 getResources().getString(R.string.default_date_format));
198 Settings.System.putString(getContentResolver(),
199 Settings.System.DATE_FORMAT, format);
200 updateTimeAndDateDisplay(getActivity());
201 } else if (key.equals(KEY_AUTO_TIME)) {
202 boolean autoEnabled = preferences.getBoolean(key, true);
203 Settings.System.putInt(getContentResolver(), Settings.System.AUTO_TIME,
204 autoEnabled ? 1 : 0);
205 mTimePref.setEnabled(!autoEnabled);
206 mDatePref.setEnabled(!autoEnabled);
207 } else if (key.equals(KEY_AUTO_TIME_ZONE)) {
208 boolean autoZoneEnabled = preferences.getBoolean(key, true);
209 Settings.System.putInt(
210 getContentResolver(), Settings.System.AUTO_TIME_ZONE, autoZoneEnabled ? 1 : 0);
211 mTimeZone.setEnabled(!autoZoneEnabled);
216 public Dialog onCreateDialog(int id) {
220 case DIALOG_DATEPICKER: {
221 final Calendar calendar = Calendar.getInstance();
222 d = new DatePickerDialog(
225 calendar.get(Calendar.YEAR),
226 calendar.get(Calendar.MONTH),
227 calendar.get(Calendar.DAY_OF_MONTH));
230 case DIALOG_TIMEPICKER: {
231 final Calendar calendar = Calendar.getInstance();
232 d = new TimePickerDialog(
235 calendar.get(Calendar.HOUR_OF_DAY),
236 calendar.get(Calendar.MINUTE),
237 DateFormat.is24HourFormat(getActivity()));
250 public void onPrepareDialog(int id, Dialog d) {
252 case DIALOG_DATEPICKER: {
253 DatePickerDialog datePicker = (DatePickerDialog)d;
254 final Calendar calendar = Calendar.getInstance();
255 datePicker.updateDate(
256 calendar.get(Calendar.YEAR),
257 calendar.get(Calendar.MONTH),
258 calendar.get(Calendar.DAY_OF_MONTH));
261 case DIALOG_TIMEPICKER: {
262 TimePickerDialog timePicker = (TimePickerDialog)d;
263 final Calendar calendar = Calendar.getInstance();
264 timePicker.updateTime(
265 calendar.get(Calendar.HOUR_OF_DAY),
266 calendar.get(Calendar.MINUTE));
275 public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) {
276 if (preference == mDatePref) {
277 showDialog(DIALOG_DATEPICKER);
278 } else if (preference == mTimePref) {
279 // The 24-hour mode may have changed, so recreate the dialog
280 removeDialog(DIALOG_TIMEPICKER);
281 showDialog(DIALOG_TIMEPICKER);
282 } else if (preference == mTime24Pref) {
283 set24Hour(((CheckBoxPreference)mTime24Pref).isChecked());
284 updateTimeAndDateDisplay(getActivity());
287 return super.onPreferenceTreeClick(preferenceScreen, preference);
291 public void onActivityResult(int requestCode, int resultCode,
293 updateTimeAndDateDisplay(getActivity());
296 private void timeUpdated() {
297 Intent timeChanged = new Intent(Intent.ACTION_TIME_CHANGED);
298 getActivity().sendBroadcast(timeChanged);
301 /* Get & Set values from the system settings */
303 private boolean is24Hour() {
304 return DateFormat.is24HourFormat(getActivity());
307 private void set24Hour(boolean is24Hour) {
308 Settings.System.putString(getContentResolver(),
309 Settings.System.TIME_12_24,
310 is24Hour? HOURS_24 : HOURS_12);
313 private String getDateFormat() {
314 return Settings.System.getString(getContentResolver(),
315 Settings.System.DATE_FORMAT);
318 private boolean getAutoState(String name) {
320 return Settings.System.getInt(getContentResolver(), name) > 0;
321 } catch (SettingNotFoundException snfe) {
326 /* Helper routines to format timezone */
328 /* package */ static void setDate(int year, int month, int day) {
329 Calendar c = Calendar.getInstance();
331 c.set(Calendar.YEAR, year);
332 c.set(Calendar.MONTH, month);
333 c.set(Calendar.DAY_OF_MONTH, day);
334 long when = c.getTimeInMillis();
336 if (when / 1000 < Integer.MAX_VALUE) {
337 SystemClock.setCurrentTimeMillis(when);
341 /* package */ static void setTime(int hourOfDay, int minute) {
342 Calendar c = Calendar.getInstance();
344 c.set(Calendar.HOUR_OF_DAY, hourOfDay);
345 c.set(Calendar.MINUTE, minute);
346 long when = c.getTimeInMillis();
348 if (when / 1000 < Integer.MAX_VALUE) {
349 SystemClock.setCurrentTimeMillis(when);
353 /* package */ static String getTimeZoneText(TimeZone tz) {
354 boolean daylight = tz.inDaylightTime(new Date());
355 StringBuilder sb = new StringBuilder();
357 sb.append(formatOffset(tz.getRawOffset() +
358 (daylight ? tz.getDSTSavings() : 0))).
360 append(tz.getDisplayName(daylight, TimeZone.LONG));
362 return sb.toString();
365 private static char[] formatOffset(int off) {
366 off = off / 1000 / 60;
368 char[] buf = new char[9];
380 int hours = off / 60;
381 int minutes = off % 60;
383 buf[4] = (char) ('0' + hours / 10);
384 buf[5] = (char) ('0' + hours % 10);
388 buf[7] = (char) ('0' + minutes / 10);
389 buf[8] = (char) ('0' + minutes % 10);
394 private BroadcastReceiver mIntentReceiver = new BroadcastReceiver() {
396 public void onReceive(Context context, Intent intent) {
397 final Activity activity = getActivity();
398 if (activity != null) {
399 updateTimeAndDateDisplay(activity);