1 /* 2 * Copyright (c) Huawei Technologies Co., Ltd. 2023-2023. All rights reserved. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef APP_STATE_LISTENER_H 17 #define APP_STATE_LISTENER_H 18 19 #include "app_state_subscriber.h" 20 21 namespace OHOS { 22 namespace Media { 23 enum class AppState : int32_t { 24 APP_STATE_NULL, 25 APP_STATE_FRONT_GROUND = 2, 26 APP_STATE_BACK_GROUND = 4, 27 }; 28 class AppStateListener : public Memory::AppStateSubscriber { 29 public: 30 AppStateListener(); 31 ~AppStateListener(); 32 33 void OnConnected() override; 34 void OnDisconnected() override; 35 void OnAppStateChanged(int32_t pid, int32_t uid, int32_t state) override; 36 void ForceReclaim(int32_t pid, int32_t uid) override; 37 void OnTrim(Memory::SystemMemoryLevel level) override; 38 void OnRemoteDied(const wptr<IRemoteObject> &object) override; 39 }; 40 } 41 } 42 #endif // APP_STATE_LISTENER_H