| /* |
| * Copyright (C) 2017 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 android.util; |
| |
| import android.annotation.TestApi; |
| import android.content.Context; |
| import android.os.SystemProperties; |
| import android.provider.Settings; |
| import android.text.TextUtils; |
| |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Map; |
| import java.util.Set; |
| |
| /** |
| * Util class to get feature flag information. |
| * |
| * @hide |
| */ |
| @TestApi |
| public class FeatureFlagUtils { |
| |
| public static final String FFLAG_PREFIX = "sys.fflag."; |
| public static final String FFLAG_OVERRIDE_PREFIX = FFLAG_PREFIX + "override."; |
| public static final String PERSIST_PREFIX = "persist." + FFLAG_OVERRIDE_PREFIX; |
| public static final String HEARING_AID_SETTINGS = "settings_bluetooth_hearing_aid"; |
| public static final String SETTINGS_WIFITRACKER2 = "settings_wifitracker2"; |
| /** @hide */ |
| public static final String SETTINGS_DO_NOT_RESTORE_PRESERVED = |
| "settings_do_not_restore_preserved"; |
| /** @hide */ |
| public static final String SETTINGS_USE_NEW_BACKUP_ELIGIBILITY_RULES |
| = "settings_use_new_backup_eligibility_rules"; |
| /** @hide */ |
| public static final String SETTINGS_ENABLE_SECURITY_HUB = "settings_enable_security_hub"; |
| /** @hide */ |
| public static final String SETTINGS_SUPPORT_LARGE_SCREEN = "settings_support_large_screen"; |
| |
| /** |
| * Support locale opt-out and opt-in switch for per app's language. |
| * @hide |
| */ |
| public static final String SETTINGS_APP_LOCALE_OPT_IN_ENABLED = |
| "settings_app_locale_opt_in_enabled"; |
| |
| /** |
| * Launch the Volume panel in SystemUI. |
| * @hide |
| */ |
| public static final String SETTINGS_VOLUME_PANEL_IN_SYSTEMUI = |
| "settings_volume_panel_in_systemui"; |
| |
| /** @hide */ |
| public static final String SETTINGS_ENABLE_MONITOR_PHANTOM_PROCS = |
| "settings_enable_monitor_phantom_procs"; |
| |
| /** |
| * Support dark theme activation at Bedtime. |
| * @hide |
| */ |
| public static final String SETTINGS_APP_ALLOW_DARK_THEME_ACTIVATION_AT_BEDTIME = |
| "settings_app_allow_dark_theme_activation_at_bedtime"; |
| |
| /** |
| * Flag to decouple bluetooth LE Audio Broadcast from Unicast |
| * If the flag is true, the broadcast feature will be enabled when the phone |
| * is connected to the BLE device. |
| * If the flag is false, it is not necessary to connect the BLE device. |
| * @hide |
| */ |
| public static final String SETTINGS_NEED_CONNECTED_BLE_DEVICE_FOR_BROADCAST = |
| "settings_need_connected_ble_device_for_broadcast"; |
| |
| /** |
| * Enable new modifier key settings UI |
| * @hide |
| */ |
| public static final String SETTINGS_NEW_KEYBOARD_MODIFIER_KEY = |
| "settings_new_keyboard_modifier_key"; |
| |
| /** |
| * Enable new trackpad settings UI |
| * @hide |
| */ |
| public static final String SETTINGS_NEW_KEYBOARD_TRACKPAD = "settings_new_keyboard_trackpad"; |
| |
| /** |
| * Enable trackpad gesture settings UI |
| * @hide |
| */ |
| public static final String SETTINGS_NEW_KEYBOARD_TRACKPAD_GESTURE = |
| "settings_new_keyboard_trackpad_gesture"; |
| |
| /** |
| * Enable the new pages which is implemented with SPA. |
| * @hide |
| */ |
| public static final String SETTINGS_ENABLE_SPA = "settings_enable_spa"; |
| |
| /** |
| * Enable new pages implemented with SPA besides the SPA pages controlled by the {@code |
| * settings_enable_spa} flag. |
| * @hide |
| */ |
| public static final String SETTINGS_ENABLE_SPA_PHASE2 = "settings_enable_spa_phase2"; |
| |
| /** |
| * Enable the SPA metrics writing. |
| * @hide |
| */ |
| public static final String SETTINGS_ENABLE_SPA_METRICS = "settings_enable_spa_metrics"; |
| |
| /** Flag to enable/disable adb log metrics |
| * @hide |
| */ |
| public static final String SETTINGS_ADB_METRICS_WRITER = "settings_adb_metrics_writer"; |
| |
| /** |
| * Flag to show stylus-specific preferences in Connected Devices |
| * @hide |
| */ |
| public static final String SETTINGS_SHOW_STYLUS_PREFERENCES = |
| "settings_show_stylus_preferences"; |
| |
| /** |
| * Flag to enable/disable biometrics enrollment v2 |
| * @hide |
| */ |
| public static final String SETTINGS_BIOMETRICS2_ENROLLMENT = "settings_biometrics2_enrollment"; |
| |
| /** |
| * Flag to enable/disable FingerprintSettings v2 |
| * @hide |
| */ |
| public static final String SETTINGS_BIOMETRICS2_FINGERPRINT_SETTINGS = |
| "settings_biometrics2_fingerprint"; |
| |
| /** |
| * Flag to enable/disable remote auth enrollment and settings |
| * @hide |
| */ |
| public static final String SETTINGS_REMOTEAUTH_ENROLLMENT_SETTINGS = |
| "settings_remoteauth_enrollment"; |
| |
| /** |
| * Flag to enable/disable preferring the AccessibilityMenu service in the system. |
| * @hide |
| */ |
| public static final String SETTINGS_PREFER_ACCESSIBILITY_MENU_IN_SYSTEM = |
| "settings_prefer_accessibility_menu_in_system"; |
| |
| /** Flag to enable/disable audio routing change |
| * @hide |
| */ |
| public static final String SETTINGS_AUDIO_ROUTING = "settings_audio_routing"; |
| |
| /** Flag to enable/disable flash notifications |
| * @hide |
| */ |
| public static final String SETTINGS_FLASH_NOTIFICATIONS = "settings_flash_notifications"; |
| |
| /** |
| * Flag to enable lock screen credentials transfer API in Android U. |
| * @hide |
| */ |
| public static final String SETTINGS_ENABLE_LOCKSCREEN_TRANSFER_API = |
| "settings_enable_lockscreen_transfer_api"; |
| |
| /** |
| * Flag to enable remote device credential validation |
| * @hide |
| */ |
| public static final String SETTINGS_REMOTE_DEVICE_CREDENTIAL_VALIDATION = |
| "settings_remote_device_credential_validation"; |
| |
| private static final Map<String, String> DEFAULT_FLAGS; |
| |
| static { |
| DEFAULT_FLAGS = new HashMap<>(); |
| DEFAULT_FLAGS.put("settings_audio_switcher", "true"); |
| DEFAULT_FLAGS.put("settings_systemui_theme", "true"); |
| DEFAULT_FLAGS.put(HEARING_AID_SETTINGS, "false"); |
| DEFAULT_FLAGS.put("settings_wifi_details_datausage_header", "false"); |
| DEFAULT_FLAGS.put("settings_skip_direction_mutable", "true"); |
| DEFAULT_FLAGS.put(SETTINGS_WIFITRACKER2, "true"); |
| DEFAULT_FLAGS.put("settings_controller_loading_enhancement", "true"); |
| DEFAULT_FLAGS.put("settings_conditionals", "false"); |
| // This flags guards a feature introduced in R and will be removed in the next release |
| // (b/148367230). |
| DEFAULT_FLAGS.put(SETTINGS_DO_NOT_RESTORE_PRESERVED, "true"); |
| |
| DEFAULT_FLAGS.put("settings_tether_all_in_one", "false"); |
| DEFAULT_FLAGS.put("settings_contextual_home", "false"); |
| DEFAULT_FLAGS.put(SETTINGS_USE_NEW_BACKUP_ELIGIBILITY_RULES, "true"); |
| DEFAULT_FLAGS.put(SETTINGS_ENABLE_SECURITY_HUB, "true"); |
| DEFAULT_FLAGS.put(SETTINGS_SUPPORT_LARGE_SCREEN, "true"); |
| DEFAULT_FLAGS.put("settings_search_always_expand", "true"); |
| DEFAULT_FLAGS.put(SETTINGS_APP_LOCALE_OPT_IN_ENABLED, "true"); |
| DEFAULT_FLAGS.put(SETTINGS_VOLUME_PANEL_IN_SYSTEMUI, "false"); |
| DEFAULT_FLAGS.put(SETTINGS_ENABLE_MONITOR_PHANTOM_PROCS, "true"); |
| DEFAULT_FLAGS.put(SETTINGS_APP_ALLOW_DARK_THEME_ACTIVATION_AT_BEDTIME, "true"); |
| DEFAULT_FLAGS.put(SETTINGS_NEED_CONNECTED_BLE_DEVICE_FOR_BROADCAST, "true"); |
| DEFAULT_FLAGS.put(SETTINGS_NEW_KEYBOARD_MODIFIER_KEY, "true"); |
| DEFAULT_FLAGS.put(SETTINGS_NEW_KEYBOARD_TRACKPAD, "true"); |
| DEFAULT_FLAGS.put(SETTINGS_NEW_KEYBOARD_TRACKPAD_GESTURE, "false"); |
| DEFAULT_FLAGS.put(SETTINGS_ENABLE_SPA, "true"); |
| DEFAULT_FLAGS.put(SETTINGS_ENABLE_SPA_PHASE2, "false"); |
| DEFAULT_FLAGS.put(SETTINGS_ENABLE_SPA_METRICS, "false"); |
| DEFAULT_FLAGS.put(SETTINGS_ADB_METRICS_WRITER, "false"); |
| DEFAULT_FLAGS.put(SETTINGS_SHOW_STYLUS_PREFERENCES, "true"); |
| DEFAULT_FLAGS.put(SETTINGS_BIOMETRICS2_ENROLLMENT, "false"); |
| DEFAULT_FLAGS.put(SETTINGS_PREFER_ACCESSIBILITY_MENU_IN_SYSTEM, "false"); |
| DEFAULT_FLAGS.put(SETTINGS_AUDIO_ROUTING, "false"); |
| DEFAULT_FLAGS.put(SETTINGS_FLASH_NOTIFICATIONS, "true"); |
| DEFAULT_FLAGS.put(SETTINGS_ENABLE_LOCKSCREEN_TRANSFER_API, "true"); |
| DEFAULT_FLAGS.put(SETTINGS_REMOTE_DEVICE_CREDENTIAL_VALIDATION, "true"); |
| DEFAULT_FLAGS.put(SETTINGS_BIOMETRICS2_FINGERPRINT_SETTINGS, "false"); |
| // TODO: b/298454866 Replace with Trunk Stable Feature Flag |
| DEFAULT_FLAGS.put(SETTINGS_REMOTEAUTH_ENROLLMENT_SETTINGS, "false"); |
| } |
| |
| private static final Set<String> PERSISTENT_FLAGS; |
| |
| static { |
| PERSISTENT_FLAGS = new HashSet<>(); |
| PERSISTENT_FLAGS.add(SETTINGS_APP_LOCALE_OPT_IN_ENABLED); |
| PERSISTENT_FLAGS.add(SETTINGS_SUPPORT_LARGE_SCREEN); |
| PERSISTENT_FLAGS.add(SETTINGS_ENABLE_MONITOR_PHANTOM_PROCS); |
| PERSISTENT_FLAGS.add(SETTINGS_APP_ALLOW_DARK_THEME_ACTIVATION_AT_BEDTIME); |
| PERSISTENT_FLAGS.add(SETTINGS_NEW_KEYBOARD_MODIFIER_KEY); |
| PERSISTENT_FLAGS.add(SETTINGS_NEW_KEYBOARD_TRACKPAD); |
| PERSISTENT_FLAGS.add(SETTINGS_NEW_KEYBOARD_TRACKPAD_GESTURE); |
| PERSISTENT_FLAGS.add(SETTINGS_ENABLE_SPA); |
| PERSISTENT_FLAGS.add(SETTINGS_ENABLE_SPA_PHASE2); |
| PERSISTENT_FLAGS.add(SETTINGS_PREFER_ACCESSIBILITY_MENU_IN_SYSTEM); |
| } |
| |
| /** |
| * Whether or not a flag is enabled. |
| * |
| * @param feature the flag name |
| * @return true if the flag is enabled (either by default in system, or override by user) |
| */ |
| public static boolean isEnabled(Context context, String feature) { |
| // Override precedence: |
| // Settings.Global -> sys.fflag.override.* -> static list |
| |
| // Step 1: check if feature flag is set in Settings.Global. |
| String value; |
| if (context != null) { |
| value = Settings.Global.getString(context.getContentResolver(), feature); |
| if (!TextUtils.isEmpty(value)) { |
| return Boolean.parseBoolean(value); |
| } |
| } |
| |
| // Step 2: check if feature flag has any override. |
| // Flag name: [persist.]sys.fflag.override.<feature> |
| value = SystemProperties.get(getSystemPropertyPrefix(feature) + feature); |
| if (!TextUtils.isEmpty(value)) { |
| return Boolean.parseBoolean(value); |
| } |
| // Step 3: check if feature flag has any default value. |
| value = getAllFeatureFlags().get(feature); |
| return Boolean.parseBoolean(value); |
| } |
| |
| /** |
| * Override feature flag to new state. |
| */ |
| public static void setEnabled(Context context, String feature, boolean enabled) { |
| SystemProperties.set(getSystemPropertyPrefix(feature) + feature, |
| enabled ? "true" : "false"); |
| } |
| |
| /** |
| * Returns all feature flags in their raw form. |
| */ |
| public static Map<String, String> getAllFeatureFlags() { |
| return DEFAULT_FLAGS; |
| } |
| |
| private static String getSystemPropertyPrefix(String feature) { |
| return PERSISTENT_FLAGS.contains(feature) ? PERSIST_PREFIX : FFLAG_OVERRIDE_PREFIX; |
| } |
| } |
