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 mTimePref = findPreference("time");
90 mTime24Pref = findPreference("24 hour");
91 mTimeZone = findPreference("timezone");
92 mDatePref = findPreference("date");
93 mDateFormat = (ListPreference) findPreference(KEY_DATE_FORMAT);
95 String [] dateFormats = getResources().getStringArray(R.array.date_format_values);
96 String [] formattedDates = new String[dateFormats.length];
97 String currentFormat = getDateFormat();
98 // Initialize if DATE_FORMAT is not set in the system settings
99 // This can happen after a factory reset (or data wipe)
100 if (currentFormat == null) {
103 for (int i = 0; i < formattedDates.length; i++) {
105 DateFormat.getDateFormatForSetting(getActivity(), dateFormats[i])
106 .format(mDummyDate.getTime());
108 if (dateFormats[i].length() == 0) {
109 formattedDates[i] = getResources().
110 getString(R.string.normal_date_format, formatted);
112 formattedDates[i] = formatted;
116 mDateFormat.setEntries(formattedDates);
117 mDateFormat.setEntryValues(R.array.date_format_values);
118 mDateFormat.setValue(currentFormat);
120 mTimePref.setEnabled(!autoTimeEnabled);
121 mDatePref.setEnabled(!autoTimeEnabled);
122 mTimeZone.setEnabled(!autoTimeZoneEnabled);
127 public void onResume() {
130 getPreferenceScreen().getSharedPreferences()
131 .registerOnSharedPreferenceChangeListener(this);
133 ((CheckBoxPreference)mTime24Pref).setChecked(is24Hour());
135 // Register for time ticks and other reasons for time change
136 IntentFilter filter = new IntentFilter();
137 filter.addAction(Intent.ACTION_TIME_TICK);
138 filter.addAction(Intent.ACTION_TIME_CHANGED);
139 filter.addAction(Intent.ACTION_TIMEZONE_CHANGED);
140 getActivity().registerReceiver(mIntentReceiver, filter, null, null);
142 updateTimeAndDateDisplay(getActivity());
146 public void onPause() {
148 getActivity().unregisterReceiver(mIntentReceiver);
149 getPreferenceScreen().getSharedPreferences()
150 .unregisterOnSharedPreferenceChangeListener(this);
153 private void updateTimeAndDateDisplay(Context context) {
154 java.text.DateFormat shortDateFormat = DateFormat.getDateFormat(context);
155 final Calendar now = Calendar.getInstance();
156 Date dummyDate = mDummyDate.getTime();
157 mTimePref.setSummary(DateFormat.getTimeFormat(getActivity()).format(now.getTime()));
158 mTimeZone.setSummary(getTimeZoneText(now.getTimeZone()));
159 mDatePref.setSummary(shortDateFormat.format(now.getTime()));
160 mDateFormat.setSummary(shortDateFormat.format(dummyDate));
164 public void onDateSet(DatePicker view, int year, int month, int day) {
165 setDate(year, month, day);
166 final Activity activity = getActivity();
167 if (activity != null) {
168 updateTimeAndDateDisplay(activity);
173 public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
174 setTime(hourOfDay, minute);
175 final Activity activity = getActivity();
176 if (activity != null) {
177 updateTimeAndDateDisplay(activity);
180 // We don't need to call timeUpdated() here because the TIME_CHANGED
181 // broadcast is sent by the AlarmManager as a side effect of setting the
186 public void onSharedPreferenceChanged(SharedPreferences preferences, String key) {
187 if (key.equals(KEY_DATE_FORMAT)) {
188 String format = preferences.getString(key,
189 getResources().getString(R.string.default_date_format));
190 Settings.System.putString(getContentResolver(),
191 Settings.System.DATE_FORMAT, format);
192 updateTimeAndDateDisplay(getActivity());
193 } else if (key.equals(KEY_AUTO_TIME)) {
194 boolean autoEnabled = preferences.getBoolean(key, true);
195 Settings.System.putInt(getContentResolver(), Settings.System.AUTO_TIME,
196 autoEnabled ? 1 : 0);
197 mTimePref.setEnabled(!autoEnabled);
198 mDatePref.setEnabled(!autoEnabled);
199 } else if (key.equals(KEY_AUTO_TIME_ZONE)) {
200 boolean autoZoneEnabled = preferences.getBoolean(key, true);
201 Settings.System.putInt(
202 getContentResolver(), Settings.System.AUTO_TIME_ZONE, autoZoneEnabled ? 1 : 0);
203 mTimeZone.setEnabled(!autoZoneEnabled);
208 public Dialog onCreateDialog(int id) {
212 case DIALOG_DATEPICKER: {
213 final Calendar calendar = Calendar.getInstance();
214 d = new DatePickerDialog(
217 calendar.get(Calendar.YEAR),
218 calendar.get(Calendar.MONTH),
219 calendar.get(Calendar.DAY_OF_MONTH));
220 d.setTitle(getResources().getString(R.string.date_time_changeDate_text));
223 case DIALOG_TIMEPICKER: {
224 final Calendar calendar = Calendar.getInstance();
225 d = new TimePickerDialog(
228 calendar.get(Calendar.HOUR_OF_DAY),
229 calendar.get(Calendar.MINUTE),
230 DateFormat.is24HourFormat(getActivity()));
231 d.setTitle(getResources().getString(R.string.date_time_changeTime_text));
244 public void onPrepareDialog(int id, Dialog d) {
246 case DIALOG_DATEPICKER: {
247 DatePickerDialog datePicker = (DatePickerDialog)d;
248 final Calendar calendar = Calendar.getInstance();
249 datePicker.updateDate(
250 calendar.get(Calendar.YEAR),
251 calendar.get(Calendar.MONTH),
252 calendar.get(Calendar.DAY_OF_MONTH));
255 case DIALOG_TIMEPICKER: {
256 TimePickerDialog timePicker = (TimePickerDialog)d;
257 final Calendar calendar = Calendar.getInstance();
258 timePicker.updateTime(
259 calendar.get(Calendar.HOUR_OF_DAY),
260 calendar.get(Calendar.MINUTE));
269 public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) {
270 if (preference == mDatePref) {
271 showDialog(DIALOG_DATEPICKER);
272 } else if (preference == mTimePref) {
273 // The 24-hour mode may have changed, so recreate the dialog
274 removeDialog(DIALOG_TIMEPICKER);
275 showDialog(DIALOG_TIMEPICKER);
276 } else if (preference == mTime24Pref) {
277 set24Hour(((CheckBoxPreference)mTime24Pref).isChecked());
278 updateTimeAndDateDisplay(getActivity());
281 return super.onPreferenceTreeClick(preferenceScreen, preference);
285 public void onActivityResult(int requestCode, int resultCode,
287 updateTimeAndDateDisplay(getActivity());
290 private void timeUpdated() {
291 Intent timeChanged = new Intent(Intent.ACTION_TIME_CHANGED);
292 getActivity().sendBroadcast(timeChanged);
295 /* Get & Set values from the system settings */
297 private boolean is24Hour() {
298 return DateFormat.is24HourFormat(getActivity());
301 private void set24Hour(boolean is24Hour) {
302 Settings.System.putString(getContentResolver(),
303 Settings.System.TIME_12_24,
304 is24Hour? HOURS_24 : HOURS_12);
307 private String getDateFormat() {
308 return Settings.System.getString(getContentResolver(),
309 Settings.System.DATE_FORMAT);
312 private boolean getAutoState(String name) {
314 return Settings.System.getInt(getContentResolver(), name) > 0;
315 } catch (SettingNotFoundException snfe) {
320 /* Helper routines to format timezone */
322 /* package */ static void setDate(int year, int month, int day) {
323 Calendar c = Calendar.getInstance();
325 c.set(Calendar.YEAR, year);
326 c.set(Calendar.MONTH, month);
327 c.set(Calendar.DAY_OF_MONTH, day);
328 long when = c.getTimeInMillis();
330 if (when / 1000 < Integer.MAX_VALUE) {
331 SystemClock.setCurrentTimeMillis(when);
335 /* package */ static void setTime(int hourOfDay, int minute) {
336 Calendar c = Calendar.getInstance();
338 c.set(Calendar.HOUR_OF_DAY, hourOfDay);
339 c.set(Calendar.MINUTE, minute);
340 long when = c.getTimeInMillis();
342 if (when / 1000 < Integer.MAX_VALUE) {
343 SystemClock.setCurrentTimeMillis(when);
347 /* package */ static String getTimeZoneText(TimeZone tz) {
348 boolean daylight = tz.inDaylightTime(new Date());
349 StringBuilder sb = new StringBuilder();
351 sb.append(formatOffset(tz.getRawOffset() +
352 (daylight ? tz.getDSTSavings() : 0))).
354 append(tz.getDisplayName(daylight, TimeZone.LONG));
356 return sb.toString();
359 private static char[] formatOffset(int off) {
360 off = off / 1000 / 60;
362 char[] buf = new char[9];
374 int hours = off / 60;
375 int minutes = off % 60;
377 buf[4] = (char) ('0' + hours / 10);
378 buf[5] = (char) ('0' + hours % 10);
382 buf[7] = (char) ('0' + minutes / 10);
383 buf[8] = (char) ('0' + minutes % 10);
388 private BroadcastReceiver mIntentReceiver = new BroadcastReceiver() {
390 public void onReceive(Context context, Intent intent) {
391 final Activity activity = getActivity();
392 if (activity != null) {
393 updateTimeAndDateDisplay(activity);