/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.settings;
import android.app.Dialog;
import android.app.DatePickerDialog;
import android.app.TimePickerDialog;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
import android.os.Bundle;
import android.os.SystemClock;
import android.preference.CheckBoxPreference;
import android.preference.ListPreference;
import android.preference.Preference;
import android.preference.PreferenceActivity;
import android.preference.PreferenceScreen;
import android.provider.Settings;
import android.provider.Settings.SettingNotFoundException;
import android.text.format.DateFormat;
import android.widget.DatePicker;
import android.widget.TimePicker;
import java.util.Calendar;
import java.util.Date;
import java.util.TimeZone;
public class DateTimeSettings
extends PreferenceActivity
implements OnSharedPreferenceChangeListener,
TimePickerDialog.OnTimeSetListener , DatePickerDialog.OnDateSetListener {
private static final String HOURS_12 = "12";
private static final String HOURS_24 = "24";
private Calendar mDummyDate;
private static final String KEY_DATE_FORMAT = "date_format";
private static final String KEY_AUTO_TIME = "auto_time";
private static final int DIALOG_DATEPICKER = 0;
private static final int DIALOG_TIMEPICKER = 1;
private CheckBoxPreference mAutoPref;
private Preference mTimePref;
private Preference mTime24Pref;
private Preference mTimeZone;
private Preference mDatePref;
private ListPreference mDateFormat;
@Override
protected void onCreate(Bundle icicle) {
super.onCreate(icicle);
addPreferencesFromResource(R.xml.date_time_prefs);
initUI();
}
private void initUI() {
boolean autoEnabled = getAutoState();
mDummyDate = Calendar.getInstance();
mDummyDate.set(mDummyDate.get(Calendar.YEAR), 11, 31, 13, 0, 0);
mAutoPref = (CheckBoxPreference) findPreference(KEY_AUTO_TIME);
mAutoPref.setChecked(autoEnabled);
mTimePref = findPreference("time");
mTime24Pref = findPreference("24 hour");
mTimeZone = findPreference("timezone");
mDatePref = findPreference("date");
mDateFormat = (ListPreference) findPreference(KEY_DATE_FORMAT);
String [] dateFormats = getResources().getStringArray(R.array.date_format_values);
String [] formattedDates = new String[dateFormats.length];
String currentFormat = getDateFormat();
// Initialize if DATE_FORMAT is not set in the system settings
// This can happen after a factory reset (or data wipe)
if (currentFormat == null) {
currentFormat = "";
}
for (int i = 0; i < formattedDates.length; i++) {
String formatted =
DateFormat.getDateFormatForSetting(this, dateFormats[i]).
format(mDummyDate.getTime());
if (dateFormats[i].length() == 0) {
formattedDates[i] = getResources().
getString(R.string.normal_date_format, formatted);
} else {
formattedDates[i] = formatted;
}
}
mDateFormat.setEntries(formattedDates);
mDateFormat.setEntryValues(R.array.date_format_values);
mDateFormat.setValue(currentFormat);
mTimePref.setEnabled(!autoEnabled);
mDatePref.setEnabled(!autoEnabled);
mTimeZone.setEnabled(!autoEnabled);
}
@Override
protected void onResume() {
super.onResume();
getPreferenceScreen().getSharedPreferences().registerOnSharedPreferenceChangeListener(this);
((CheckBoxPreference)mTime24Pref).setChecked(is24Hour());
// Register for time ticks and other reasons for time change
IntentFilter filter = new IntentFilter();
filter.addAction(Intent.ACTION_TIME_TICK);
filter.addAction(Intent.ACTION_TIME_CHANGED);
filter.addAction(Intent.ACTION_TIMEZONE_CHANGED);
registerReceiver(mIntentReceiver, filter, null, null);
updateTimeAndDateDisplay();
}
@Override
protected void onPause() {
super.onPause();
unregisterReceiver(mIntentReceiver);
getPreferenceScreen().getSharedPreferences().unregisterOnSharedPreferenceChangeListener(this);
}
private void updateTimeAndDateDisplay() {
java.text.DateFormat shortDateFormat = DateFormat.getDateFormat(this);
Date now = Calendar.getInstance().getTime();
Date dummyDate = mDummyDate.getTime();
mTimePref.setSummary(DateFormat.getTimeFormat(this).format(now));
mTimeZone.setSummary(getTimeZoneText());
mDatePref.setSummary(shortDateFormat.format(now));
mDateFormat.setSummary(shortDateFormat.format(dummyDate));
}
public void onDateSet(DatePicker view, int year, int month, int day) {
Calendar c = Calendar.getInstance();
c.set(Calendar.YEAR, year);
c.set(Calendar.MONTH, month);
c.set(Calendar.DAY_OF_MONTH, day);
long when = c.getTimeInMillis();
if (when / 1000 < Integer.MAX_VALUE) {
SystemClock.setCurrentTimeMillis(when);
}
updateTimeAndDateDisplay();
}
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
Calendar c = Calendar.getInstance();
c.set(Calendar.HOUR_OF_DAY, hourOfDay);
c.set(Calendar.MINUTE, minute);
long when = c.getTimeInMillis();
if (when / 1000 < Integer.MAX_VALUE) {
SystemClock.setCurrentTimeMillis(when);
}
updateTimeAndDateDisplay();
// We don't need to call timeUpdated() here because the TIME_CHANGED
// broadcast is sent by the AlarmManager as a side effect of setting the
// SystemClock time.
}
public void onSharedPreferenceChanged(SharedPreferences preferences, String key) {
if (key.equals(KEY_DATE_FORMAT)) {
String format = preferences.getString(key,
getResources().getString(R.string.default_date_format));
Settings.System.putString(getContentResolver(),
Settings.System.DATE_FORMAT, format);
updateTimeAndDateDisplay();
} else if (key.equals(KEY_AUTO_TIME)) {
boolean autoEnabled = preferences.getBoolean(key, true);
Settings.System.putInt(getContentResolver(),
Settings.System.AUTO_TIME,
autoEnabled ? 1 : 0);
mTimePref.setEnabled(!autoEnabled);
mDatePref.setEnabled(!autoEnabled);
mTimeZone.setEnabled(!autoEnabled);
}
}
@Override
public Dialog onCreateDialog(int id) {
Dialog d;
switch (id) {
case DIALOG_DATEPICKER: {
final Calendar calendar = Calendar.getInstance();
d = new DatePickerDialog(
this,
this,
calendar.get(Calendar.YEAR),
calendar.get(Calendar.MONTH),
calendar.get(Calendar.DAY_OF_MONTH));
d.setTitle(getResources().getString(R.string.date_time_changeDate_text));
break;
}
case DIALOG_TIMEPICKER: {
final Calendar calendar = Calendar.getInstance();
d = new TimePickerDialog(
this,
this,
calendar.get(Calendar.HOUR_OF_DAY),
calendar.get(Calendar.MINUTE),
DateFormat.is24HourFormat(this));
d.setTitle(getResources().getString(R.string.date_time_changeTime_text));
break;
}
default:
d = null;
break;
}
return d;
}
@Override
public void onPrepareDialog(int id, Dialog d) {
switch (id) {
case DIALOG_DATEPICKER: {
DatePickerDialog datePicker = (DatePickerDialog)d;
final Calendar calendar = Calendar.getInstance();
datePicker.updateDate(
calendar.get(Calendar.YEAR),
calendar.get(Calendar.MONTH),
calendar.get(Calendar.DAY_OF_MONTH));
break;
}
case DIALOG_TIMEPICKER: {
TimePickerDialog timePicker = (TimePickerDialog)d;
final Calendar calendar = Calendar.getInstance();
timePicker.updateTime(
calendar.get(Calendar.HOUR_OF_DAY),
calendar.get(Calendar.MINUTE));
break;
}
default:
break;
}
}
@Override
public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) {
if (preference == mDatePref) {
showDialog(DIALOG_DATEPICKER);
} else if (preference == mTimePref) {
// The 24-hour mode may have changed, so recreate the dialog
removeDialog(DIALOG_TIMEPICKER);
showDialog(DIALOG_TIMEPICKER);
} else if (preference == mTime24Pref) {
set24Hour(((CheckBoxPreference)mTime24Pref).isChecked());
updateTimeAndDateDisplay();
timeUpdated();
} else if (preference == mTimeZone) {
Intent intent = new Intent();
intent.setClass(this, ZoneList.class);
startActivityForResult(intent, 0);
}
return false;
}
@Override
protected void onActivityResult(int requestCode, int resultCode,
Intent data) {
updateTimeAndDateDisplay();
}
private void timeUpdated() {
Intent timeChanged = new Intent(Intent.ACTION_TIME_CHANGED);
sendBroadcast(timeChanged);
}
/* Get & Set values from the system settings */
private boolean is24Hour() {
return DateFormat.is24HourFormat(this);
}
private void set24Hour(boolean is24Hour) {
Settings.System.putString(getContentResolver(),
Settings.System.TIME_12_24,
is24Hour? HOURS_24 : HOURS_12);
}
private String getDateFormat() {
return Settings.System.getString(getContentResolver(),
Settings.System.DATE_FORMAT);
}
private boolean getAutoState() {
try {
return Settings.System.getInt(getContentResolver(),
Settings.System.AUTO_TIME) > 0;
} catch (SettingNotFoundException snfe) {
return true;
}
}
private void setDateFormat(String format) {
if (format.length() == 0) {
format = null;
}
Settings.System.putString(getContentResolver(), Settings.System.DATE_FORMAT, format);
}
/* Helper routines to format timezone */
private String getTimeZoneText() {
TimeZone tz = java.util.Calendar.getInstance().getTimeZone();
boolean daylight = tz.inDaylightTime(new Date());
StringBuilder sb = new StringBuilder();
sb.append(formatOffset(tz.getRawOffset() +
(daylight ? tz.getDSTSavings() : 0))).
append(", ").
append(tz.getDisplayName(daylight, TimeZone.LONG));
return sb.toString();
}
private char[] formatOffset(int off) {
off = off / 1000 / 60;
char[] buf = new char[9];
buf[0] = 'G';
buf[1] = 'M';
buf[2] = 'T';
if (off < 0) {
buf[3] = '-';
off = -off;
} else {
buf[3] = '+';
}
int hours = off / 60;
int minutes = off % 60;
buf[4] = (char) ('0' + hours / 10);
buf[5] = (char) ('0' + hours % 10);
buf[6] = ':';
buf[7] = (char) ('0' + minutes / 10);
buf[8] = (char) ('0' + minutes % 10);
return buf;
}
private BroadcastReceiver mIntentReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
updateTimeAndDateDisplay();
}
};
}