| /** |
| * 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.content.res.Configuration; |
| import android.os.Bundle; |
| import android.os.DeadObjectException; |
| import android.os.IBinder; |
| import android.os.Looper; |
| import android.os.Message; |
| import android.os.RemoteException; |
| import android.os.ServiceManager; |
| import android.util.Log; |
| |
| import com.android.internal.app.IVoiceInteractionManagerService; |
| import com.android.internal.os.HandlerCaller; |
| import com.android.internal.os.SomeArgs; |
| |
| import java.io.FileDescriptor; |
| import java.io.PrintWriter; |
| |
| /** |
| * An active voice interaction session, initiated by a {@link VoiceInteractionService}. |
| */ |
| public abstract class VoiceInteractionSessionService extends Service { |
| |
| private static final String TAG = "VoiceInteractionSession"; |
| |
| static final int MSG_NEW_SESSION = 1; |
| |
| IVoiceInteractionManagerService mSystemService; |
| VoiceInteractionSession mSession; |
| |
| IVoiceInteractionSessionService mInterface = new IVoiceInteractionSessionService.Stub() { |
| public void newSession(IBinder token, Bundle args, int startFlags) { |
| mHandlerCaller.sendMessage(mHandlerCaller.obtainMessageIOO(MSG_NEW_SESSION, |
| startFlags, 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, args.argi1); |
| 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(); |
| } |
| |
| @Override |
| public void onConfigurationChanged(Configuration newConfig) { |
| super.onConfigurationChanged(newConfig); |
| if (mSession != null) { |
| mSession.onConfigurationChanged(newConfig); |
| } |
| } |
| |
| @Override |
| public void onLowMemory() { |
| super.onLowMemory(); |
| if (mSession != null) { |
| mSession.onLowMemory(); |
| } |
| } |
| |
| @Override |
| public void onTrimMemory(int level) { |
| super.onTrimMemory(level); |
| if (mSession != null) { |
| mSession.onTrimMemory(level); |
| } |
| } |
| |
| @Override |
| protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { |
| if (mSession == null) { |
| writer.println("(no active session)"); |
| } else { |
| writer.println("VoiceInteractionSession:"); |
| mSession.dump(" ", fd, writer, args); |
| } |
| } |
| |
| void doNewSession(IBinder token, Bundle args, int startFlags) { |
| if (mSession != null) { |
| mSession.doDestroy(); |
| mSession = null; |
| } |
| mSession = onNewSession(args); |
| if (deliverSession(token)) { |
| mSession.doCreate(mSystemService, token); |
| } else { |
| // TODO(b/178777121): Add an onError() method to let the application know what happened. |
| mSession.doDestroy(); |
| mSession = null; |
| } |
| } |
| |
| private boolean deliverSession(IBinder token) { |
| try { |
| return mSystemService.deliverNewSession(token, mSession.mSession, mSession.mInteractor); |
| } catch (DeadObjectException ignored) { |
| } catch (RemoteException e) { |
| Log.e(TAG, "Failed to deliver session: " + e); |
| } |
| return false; |
| } |
| } |