147 lines
4.5 KiB
Java
147 lines
4.5 KiB
Java
/**
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.service.voice;
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import android.app.Service;
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import android.content.Context;
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import android.content.Intent;
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import android.content.res.Configuration;
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import android.os.Bundle;
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import android.os.DeadObjectException;
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import android.os.IBinder;
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import android.os.Looper;
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import android.os.Message;
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import android.os.RemoteException;
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import android.os.ServiceManager;
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import android.util.Log;
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import com.android.internal.app.IVoiceInteractionManagerService;
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import com.android.internal.os.HandlerCaller;
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import com.android.internal.os.SomeArgs;
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import java.io.FileDescriptor;
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import java.io.PrintWriter;
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/**
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* An active voice interaction session, initiated by a {@link VoiceInteractionService}.
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*/
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public abstract class VoiceInteractionSessionService extends Service {
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private static final String TAG = "VoiceInteractionSession";
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static final int MSG_NEW_SESSION = 1;
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IVoiceInteractionManagerService mSystemService;
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VoiceInteractionSession mSession;
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IVoiceInteractionSessionService mInterface = new IVoiceInteractionSessionService.Stub() {
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public void newSession(IBinder token, Bundle args, int startFlags) {
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mHandlerCaller.sendMessage(mHandlerCaller.obtainMessageIOO(MSG_NEW_SESSION,
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startFlags, token, args));
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}
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};
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HandlerCaller mHandlerCaller;
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final HandlerCaller.Callback mHandlerCallerCallback = new HandlerCaller.Callback() {
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@Override
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public void executeMessage(Message msg) {
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SomeArgs args = (SomeArgs)msg.obj;
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switch (msg.what) {
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case MSG_NEW_SESSION:
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doNewSession((IBinder)args.arg1, (Bundle)args.arg2, args.argi1);
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break;
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}
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}
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};
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@Override
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public void onCreate() {
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super.onCreate();
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mSystemService = IVoiceInteractionManagerService.Stub.asInterface(
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ServiceManager.getService(Context.VOICE_INTERACTION_MANAGER_SERVICE));
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mHandlerCaller = new HandlerCaller(this, Looper.myLooper(),
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mHandlerCallerCallback, true);
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}
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public abstract VoiceInteractionSession onNewSession(Bundle args);
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@Override
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public IBinder onBind(Intent intent) {
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return mInterface.asBinder();
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}
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@Override
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public void onConfigurationChanged(Configuration newConfig) {
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super.onConfigurationChanged(newConfig);
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if (mSession != null) {
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mSession.onConfigurationChanged(newConfig);
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}
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}
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@Override
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public void onLowMemory() {
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super.onLowMemory();
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if (mSession != null) {
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mSession.onLowMemory();
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}
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}
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@Override
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public void onTrimMemory(int level) {
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super.onTrimMemory(level);
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if (mSession != null) {
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mSession.onTrimMemory(level);
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}
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}
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@Override
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protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) {
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if (mSession == null) {
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writer.println("(no active session)");
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} else {
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writer.println("VoiceInteractionSession:");
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mSession.dump(" ", fd, writer, args);
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}
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}
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void doNewSession(IBinder token, Bundle args, int startFlags) {
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if (mSession != null) {
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mSession.doDestroy();
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mSession = null;
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}
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mSession = onNewSession(args);
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if (deliverSession(token)) {
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mSession.doCreate(mSystemService, token);
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} else {
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// TODO(b/178777121): Add an onError() method to let the application know what happened.
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mSession.doDestroy();
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mSession = null;
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}
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}
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private boolean deliverSession(IBinder token) {
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try {
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return mSystemService.deliverNewSession(token, mSession.mSession, mSession.mInteractor);
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} catch (DeadObjectException ignored) {
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} catch (RemoteException e) {
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Log.e(TAG, "Failed to deliver session: " + e);
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}
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return false;
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}
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}
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