1 /* 2 * Copyright (C) 2020 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.server; 18 19 import android.annotation.NonNull; 20 21 /** 22 * Tracks the forced-app-standby state for apps. 23 */ 24 public interface AppStateTracker { 25 String TAG = "AppStateTracker"; 26 27 /** 28 * Register a {@link BackgroundRestrictedAppListener} to listen for background restricted mode 29 * changes that should affect services etc. 30 */ addBackgroundRestrictedAppListener(@onNull BackgroundRestrictedAppListener listener)31 void addBackgroundRestrictedAppListener(@NonNull BackgroundRestrictedAppListener listener); 32 33 /** 34 * @return {code true} if the given UID/package has been in background restricted mode, 35 * it does NOT include the case where the "force app background restricted" is enabled. 36 */ isAppBackgroundRestricted(int uid, @NonNull String packageName)37 boolean isAppBackgroundRestricted(int uid, @NonNull String packageName); 38 39 /** 40 * A listener to listen to background restricted mode changes that should affect services etc. 41 */ 42 interface BackgroundRestrictedAppListener { 43 /** 44 * Called when an app goes in/out of background restricted mode. 45 */ updateBackgroundRestrictedForUidPackage(int uid, String packageName, boolean restricted)46 void updateBackgroundRestrictedForUidPackage(int uid, String packageName, 47 boolean restricted); 48 } 49 } 50