| /* |
| * 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.providers.settings; |
| |
| import android.app.ActivityManagerNative; |
| import android.app.IActivityManager; |
| import android.app.backup.IBackupManager; |
| import android.content.Context; |
| import android.content.res.Configuration; |
| import android.location.LocationManager; |
| import android.media.AudioManager; |
| import android.media.RingtoneManager; |
| import android.net.Uri; |
| import android.os.IPowerManager; |
| import android.os.RemoteException; |
| import android.os.ServiceManager; |
| import android.os.UserManager; |
| import android.provider.Settings; |
| import android.text.TextUtils; |
| |
| import java.util.Locale; |
| |
| public class SettingsHelper { |
| private static final String SILENT_RINGTONE = "_silent"; |
| private Context mContext; |
| private AudioManager mAudioManager; |
| |
| public SettingsHelper(Context context) { |
| mContext = context; |
| mAudioManager = (AudioManager) context |
| .getSystemService(Context.AUDIO_SERVICE); |
| } |
| |
| /** |
| * Sets the property via a call to the appropriate API, if any, and returns |
| * whether or not the setting should be saved to the database as well. |
| * @param name the name of the setting |
| * @param value the string value of the setting |
| * @return whether to continue with writing the value to the database. In |
| * some cases the data will be written by the call to the appropriate API, |
| * and in some cases the property value needs to be modified before setting. |
| */ |
| public boolean restoreValue(String name, String value) { |
| if (Settings.System.SCREEN_BRIGHTNESS.equals(name)) { |
| setBrightness(Integer.parseInt(value)); |
| } else if (Settings.System.SOUND_EFFECTS_ENABLED.equals(name)) { |
| setSoundEffects(Integer.parseInt(value) == 1); |
| } else if (Settings.Secure.LOCATION_PROVIDERS_ALLOWED.equals(name)) { |
| setGpsLocation(value); |
| return false; |
| } else if (Settings.Secure.BACKUP_AUTO_RESTORE.equals(name)) { |
| setAutoRestore(Integer.parseInt(value) == 1); |
| } else if (isAlreadyConfiguredCriticalAccessibilitySetting(name)) { |
| return false; |
| } else if (Settings.System.RINGTONE.equals(name) |
| || Settings.System.NOTIFICATION_SOUND.equals(name)) { |
| setRingtone(name, value); |
| return false; |
| } |
| return true; |
| } |
| |
| public String onBackupValue(String name, String value) { |
| // Special processing for backing up ringtones |
| if (Settings.System.RINGTONE.equals(name) |
| || Settings.System.NOTIFICATION_SOUND.equals(name)) { |
| if (value == null) { |
| // Silent ringtone |
| return SILENT_RINGTONE; |
| } else { |
| return getCanonicalRingtoneValue(value); |
| } |
| } |
| // Return the original value |
| return value; |
| } |
| |
| /** |
| * Sets the ringtone of type specified by the name. |
| * |
| * @param name should be Settings.System.RINGTONE or Settings.System.NOTIFICATION_SOUND. |
| * @param value can be a canonicalized uri or "_silent" to indicate a silent (null) ringtone. |
| */ |
| private void setRingtone(String name, String value) { |
| // If it's null, don't change the default |
| if (value == null) return; |
| Uri ringtoneUri = null; |
| if (SILENT_RINGTONE.equals(value)) { |
| ringtoneUri = null; |
| } else { |
| Uri canonicalUri = Uri.parse(value); |
| ringtoneUri = mContext.getContentResolver().uncanonicalize(canonicalUri); |
| if (ringtoneUri == null) { |
| // Unrecognized or invalid Uri, don't restore |
| return; |
| } |
| } |
| final int ringtoneType = Settings.System.RINGTONE.equals(name) |
| ? RingtoneManager.TYPE_RINGTONE : RingtoneManager.TYPE_NOTIFICATION; |
| RingtoneManager.setActualDefaultRingtoneUri(mContext, ringtoneType, ringtoneUri); |
| } |
| |
| private String getCanonicalRingtoneValue(String value) { |
| final Uri ringtoneUri = Uri.parse(value); |
| final Uri canonicalUri = mContext.getContentResolver().canonicalize(ringtoneUri); |
| return canonicalUri == null ? null : canonicalUri.toString(); |
| } |
| |
| private boolean isAlreadyConfiguredCriticalAccessibilitySetting(String name) { |
| // These are the critical accessibility settings that are required for a |
| // blind user to be able to interact with the device. If these settings are |
| // already configured, we will not overwrite them. If they are already set, |
| // it means that the user has performed a global gesture to enable accessibility |
| // and definitely needs these features working after the restore. |
| if (Settings.Secure.ACCESSIBILITY_ENABLED.equals(name) |
| || Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION.equals(name) |
| || Settings.Secure.ACCESSIBILITY_SPEAK_PASSWORD.equals(name) |
| || Settings.Secure.TOUCH_EXPLORATION_ENABLED.equals(name)) { |
| return Settings.Secure.getInt(mContext.getContentResolver(), name, 0) != 0; |
| } else if (Settings.Secure.TOUCH_EXPLORATION_GRANTED_ACCESSIBILITY_SERVICES.equals(name) |
| || Settings.Secure.ENABLED_ACCESSIBILITY_SERVICES.equals(name)) { |
| return !TextUtils.isEmpty(Settings.Secure.getString( |
| mContext.getContentResolver(), name)); |
| } |
| return false; |
| } |
| |
| private void setAutoRestore(boolean enabled) { |
| try { |
| IBackupManager bm = IBackupManager.Stub.asInterface( |
| ServiceManager.getService(Context.BACKUP_SERVICE)); |
| if (bm != null) { |
| bm.setAutoRestore(enabled); |
| } |
| } catch (RemoteException e) {} |
| } |
| |
| private void setGpsLocation(String value) { |
| UserManager um = (UserManager) mContext.getSystemService(Context.USER_SERVICE); |
| if (um.hasUserRestriction(UserManager.DISALLOW_SHARE_LOCATION)) { |
| return; |
| } |
| final String GPS = LocationManager.GPS_PROVIDER; |
| boolean enabled = |
| GPS.equals(value) || |
| value.startsWith(GPS + ",") || |
| value.endsWith("," + GPS) || |
| value.contains("," + GPS + ","); |
| Settings.Secure.setLocationProviderEnabled( |
| mContext.getContentResolver(), GPS, enabled); |
| } |
| |
| private void setSoundEffects(boolean enable) { |
| if (enable) { |
| mAudioManager.loadSoundEffects(); |
| } else { |
| mAudioManager.unloadSoundEffects(); |
| } |
| } |
| |
| private void setBrightness(int brightness) { |
| try { |
| IPowerManager power = IPowerManager.Stub.asInterface( |
| ServiceManager.getService("power")); |
| if (power != null) { |
| power.setTemporaryScreenBrightnessSettingOverride(brightness); |
| } |
| } catch (RemoteException doe) { |
| |
| } |
| } |
| |
| byte[] getLocaleData() { |
| Configuration conf = mContext.getResources().getConfiguration(); |
| final Locale loc = conf.locale; |
| String localeString = loc.getLanguage(); |
| String country = loc.getCountry(); |
| if (!TextUtils.isEmpty(country)) { |
| localeString += "-" + country; |
| } |
| return localeString.getBytes(); |
| } |
| |
| /** |
| * Sets the locale specified. Input data is the byte representation of a |
| * BCP-47 language tag. For backwards compatibility, strings of the form |
| * {@code ll_CC} are also accepted, where {@code ll} is a two letter language |
| * code and {@code CC} is a two letter country code. |
| * |
| * @param data the locale string in bytes. |
| */ |
| void setLocaleData(byte[] data, int size) { |
| // Check if locale was set by the user: |
| Configuration conf = mContext.getResources().getConfiguration(); |
| // TODO: The following is not working as intended because the network is forcing a locale |
| // change after registering. Need to find some other way to detect if the user manually |
| // changed the locale |
| if (conf.userSetLocale) return; // Don't change if user set it in the SetupWizard |
| |
| final String[] availableLocales = mContext.getAssets().getLocales(); |
| // Replace "_" with "-" to deal with older backups. |
| String localeCode = new String(data, 0, size).replace('_', '-'); |
| Locale loc = null; |
| for (int i = 0; i < availableLocales.length; i++) { |
| if (availableLocales[i].equals(localeCode)) { |
| loc = Locale.forLanguageTag(localeCode); |
| break; |
| } |
| } |
| if (loc == null) return; // Couldn't find the saved locale in this version of the software |
| |
| try { |
| IActivityManager am = ActivityManagerNative.getDefault(); |
| Configuration config = am.getConfiguration(); |
| config.locale = loc; |
| // indicate this isn't some passing default - the user wants this remembered |
| config.userSetLocale = true; |
| |
| am.updateConfiguration(config); |
| } catch (RemoteException e) { |
| // Intentionally left blank |
| } |
| } |
| |
| /** |
| * Informs the audio service of changes to the settings so that |
| * they can be re-read and applied. |
| */ |
| void applyAudioSettings() { |
| AudioManager am = new AudioManager(mContext); |
| am.reloadAudioSettings(); |
| } |
| } |
