/** * Copyright (C) 2014 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.service.voice; import android.app.Service; import android.content.Context; import android.content.Intent; import android.os.Bundle; import android.os.IBinder; import android.os.Looper; import android.os.Message; import android.os.RemoteException; import android.os.ServiceManager; import com.android.internal.app.IVoiceInteractionManagerService; import com.android.internal.os.HandlerCaller; import com.android.internal.os.SomeArgs; /** * An active voice interaction session, initiated by a {@link VoiceInteractionService}. */ public abstract class VoiceInteractionSessionService extends Service { static final int MSG_NEW_SESSION = 1; IVoiceInteractionManagerService mSystemService; VoiceInteractionSession mSession; IVoiceInteractionSessionService mInterface = new IVoiceInteractionSessionService.Stub() { public void newSession(IBinder token, Bundle args) { mHandlerCaller.sendMessage(mHandlerCaller.obtainMessageOO(MSG_NEW_SESSION, token, args)); } }; HandlerCaller mHandlerCaller; final HandlerCaller.Callback mHandlerCallerCallback = new HandlerCaller.Callback() { @Override public void executeMessage(Message msg) { SomeArgs args = (SomeArgs)msg.obj; switch (msg.what) { case MSG_NEW_SESSION: doNewSession((IBinder)args.arg1, (Bundle)args.arg2); break; } } }; @Override public void onCreate() { super.onCreate(); mSystemService = IVoiceInteractionManagerService.Stub.asInterface( ServiceManager.getService(Context.VOICE_INTERACTION_MANAGER_SERVICE)); mHandlerCaller = new HandlerCaller(this, Looper.myLooper(), mHandlerCallerCallback, true); } public abstract VoiceInteractionSession onNewSession(Bundle args); @Override public IBinder onBind(Intent intent) { return mInterface.asBinder(); } void doNewSession(IBinder token, Bundle args) { if (mSession != null) { mSession.doDestroy(); mSession = null; } mSession = onNewSession(args); try { mSystemService.deliverNewSession(token, mSession.mSession, mSession.mInteractor); mSession.doCreate(mSystemService, token, args); } catch (RemoteException e) { } } }