1 /* 2 * Copyright (C) 2015 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 17 package com.android.tv.settings.system; 18 19 import android.app.Activity; 20 import android.app.AlarmManager; 21 import android.content.BroadcastReceiver; 22 import android.content.Context; 23 import android.content.Intent; 24 import android.content.IntentFilter; 25 import android.os.Bundle; 26 import android.support.annotation.Keep; 27 import android.support.v17.preference.LeanbackPreferenceFragment; 28 import android.support.v7.preference.CheckBoxPreference; 29 import android.support.v7.preference.Preference; 30 import android.support.v7.preference.PreferenceScreen; 31 import android.text.TextUtils; 32 33 import com.android.settingslib.datetime.ZoneGetter; 34 import com.android.tv.settings.R; 35 36 import java.util.ArrayList; 37 import java.util.Collections; 38 import java.util.Comparator; 39 import java.util.List; 40 import java.util.Map; 41 import java.util.TimeZone; 42 43 @Keep 44 public class TimeZoneFragment extends LeanbackPreferenceFragment { 45 46 private BroadcastReceiver mIntentReceiver = new BroadcastReceiver() { 47 @Override 48 public void onReceive(Context context, Intent intent) { 49 final Activity activity = getActivity(); 50 if (activity != null) { 51 updateZones(); 52 } 53 } 54 }; 55 56 @Override onCreatePreferences(Bundle savedInstanceState, String rootKey)57 public void onCreatePreferences(Bundle savedInstanceState, String rootKey) { 58 final Context themedContext = getPreferenceManager().getContext(); 59 final PreferenceScreen screen = getPreferenceManager().createPreferenceScreen( 60 themedContext); 61 screen.setTitle(R.string.system_set_time_zone); 62 setPreferenceScreen(screen); 63 64 final List<Map<String, Object>> zoneList = ZoneGetter.getZonesList(getActivity()); 65 final List<ZonePreference> zonePrefs = new ArrayList<>(zoneList.size()); 66 for (final Map<String, Object> zone : zoneList) { 67 zonePrefs.add(new ZonePreference(themedContext, zone)); 68 } 69 Collections.sort(zonePrefs, new ZonePrefComparator()); 70 for (final Preference zonePref : zonePrefs) { 71 screen.addPreference(zonePref); 72 } 73 } 74 75 @Override onResume()76 public void onResume() { 77 super.onResume(); 78 // Register for zone changes 79 IntentFilter filter = new IntentFilter(); 80 filter.addAction(Intent.ACTION_TIMEZONE_CHANGED); 81 getActivity().registerReceiver(mIntentReceiver, filter, null, null); 82 updateZones(); 83 } 84 85 @Override onPause()86 public void onPause() { 87 super.onPause(); 88 getActivity().unregisterReceiver(mIntentReceiver); 89 } 90 91 @Override onPreferenceTreeClick(Preference preference)92 public boolean onPreferenceTreeClick(Preference preference) { 93 if (preference instanceof ZonePreference) { 94 // Update the system timezone value 95 final AlarmManager alarm = (AlarmManager) 96 getActivity().getSystemService(Context.ALARM_SERVICE); 97 alarm.setTimeZone(preference.getKey()); 98 if (!getFragmentManager().popBackStackImmediate()) { 99 getActivity().finish(); 100 } 101 } 102 return super.onPreferenceTreeClick(preference); 103 } 104 updateZones()105 private void updateZones() { 106 final String id = TimeZone.getDefault().getID(); 107 final PreferenceScreen screen = getPreferenceScreen(); 108 final int count = screen.getPreferenceCount(); 109 for (int i = 0; i < count; i++) { 110 final Preference pref = screen.getPreference(i); 111 if (!(pref instanceof ZonePreference)) { 112 continue; 113 } 114 final ZonePreference zonePref = (ZonePreference) pref; 115 zonePref.setChecked(TextUtils.equals(zonePref.getKey(), id)); 116 } 117 } 118 119 private static class ZonePreference extends CheckBoxPreference { 120 Integer offset; 121 ZonePreference(Context context, Map<? extends String, ?> zone)122 public ZonePreference(Context context, Map<? extends String, ?> zone) { 123 super(context); 124 setWidgetLayoutResource(R.layout.radio_preference_widget); 125 setKey((String) zone.get(ZoneGetter.KEY_ID)); 126 setPersistent(false); 127 setTitle((String) zone.get(ZoneGetter.KEY_DISPLAYNAME)); 128 setSummary((String) zone.get(ZoneGetter.KEY_GMT)); 129 offset = (Integer) zone.get(ZoneGetter.KEY_OFFSET); 130 } 131 } 132 133 private static class ZonePrefComparator implements Comparator<ZonePreference> { compare(ZonePreference zone1, ZonePreference zone2)134 public int compare(ZonePreference zone1, ZonePreference zone2) { 135 final int firstResult = zone1.offset.compareTo(zone2.offset); 136 if (firstResult != 0) { 137 return firstResult; 138 } 139 return zone1.getTitle().toString().compareTo(zone2.getTitle().toString()); 140 } 141 } 142 143 } 144