| /* |
| * Copyright (C) 2021 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.permission.compat; |
| |
| import android.annotation.UserIdInt; |
| import android.os.UserHandle; |
| |
| /** |
| * Helper for accessing features in {@link UserHandle}. |
| */ |
| public final class UserHandleCompat { |
| /** |
| * A user ID to indicate all users on the device. |
| */ |
| public static final int USER_ALL = UserHandle.ALL.getIdentifier(); |
| |
| /** |
| * A user ID to indicate the "system" user of the device. |
| */ |
| public static final int USER_SYSTEM = UserHandle.SYSTEM.getIdentifier(); |
| |
| private UserHandleCompat() {} |
| |
| /** |
| * Get the user ID of a given UID. |
| * |
| * @param uid the UID |
| * @return the user ID |
| */ |
| @UserIdInt |
| public static int getUserId(int uid) { |
| return UserHandle.getUserHandleForUid(uid).getIdentifier(); |
| } |
| |
| /** |
| * Get the UID from the give user ID and app ID |
| * |
| * @param userId the user ID |
| * @param appId the app ID |
| * @return the UID |
| */ |
| public static int getUid(@UserIdInt int userId, int appId) { |
| return UserHandle.of(userId).getUid(appId); |
| } |
| } |