1 /* 2 * Copyright (C) 2023 Huawei Device Co., Ltd. 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 OHOS_NFC_APP_STATE_OBSERVER_H 17 #define OHOS_NFC_APP_STATE_OBSERVER_H 18 19 #include "app_mgr_interface.h" 20 #include "application_state_observer_stub.h" 21 #include "iremote_object.h" 22 #include "tag_session.h" 23 24 namespace OHOS { 25 namespace NFC { 26 class AppStateObserver { 27 public: 28 explicit AppStateObserver(TAG::TagSession *tagSession); 29 ~AppStateObserver(); 30 AppStateObserver(const AppStateObserver &) = delete; 31 AppStateObserver &operator=(const AppStateObserver &) = delete; 32 bool SubscribeAppState(); 33 bool UnSubscribeAppState(); 34 bool IsForegroundApp(const std::string &bundleName); 35 36 private: 37 class AppStateAwareObserver : public AppExecFwk::ApplicationStateObserverStub { 38 public: 39 void OnProcessDied(const AppExecFwk::ProcessData &processData) override; 40 void OnAbilityStateChanged(const AppExecFwk::AbilityStateData &abilityStateData) override; 41 void OnForegroundApplicationChanged(const AppExecFwk::AppStateData &appStateData) override; 42 std::string foregroundAppBundleName_ = ""; 43 private: 44 inline bool ValidateAppStateData(const AppExecFwk::AppStateData &appStateData); 45 }; 46 bool Connect(); 47 std::string GetForegroundApp(); 48 49 private: 50 std::mutex mutex_{}; 51 sptr<AppExecFwk::IAppMgr> appMgrProxy_{nullptr}; 52 std::string foregroundAppBundleName_ = ""; 53 sptr<AppStateAwareObserver> appStateAwareObserver_; 54 }; 55 } //namespace NFC 56 } // namespace OHOS 57 #endif // OHOS_NFC_APP_STATE_OBSERVER_H