e77e22e208
Test: manual - rotated phone while playing TTS Fix: 145579714 Change-Id: I7232704c92ba8ec34769cf68afe2278e22532d86
71 lines
2.0 KiB
Java
71 lines
2.0 KiB
Java
/*
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* Copyright 2020 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 com.android.settings.tts;
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import android.app.Application;
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import android.speech.tts.TextToSpeech;
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import android.util.Pair;
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import androidx.lifecycle.AndroidViewModel;
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/**
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* A helper view model to protect the TTS object from being destroyed and
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* recreated on orientation change.
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*/
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public class TextToSpeechViewModel extends AndroidViewModel {
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private TextToSpeech mTts;
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// Save the application so we can use it as the TTS context
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private final Application mApplication;
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public TextToSpeechViewModel(Application application) {
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super(application);
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mApplication = application;
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}
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/*
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* Since the view model now controls the TTS object, we need to handle shutting it down
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* ourselves.
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*/
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@Override
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protected void onCleared() {
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shutdownTts();
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}
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protected void shutdownTts() {
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mTts.shutdown();
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mTts = null;
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}
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/*
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* An accessor method to get the TTS object. Returns a pair of the TTS object and a boolean
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* indicating whether the TTS object was newly created or not.
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*/
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protected Pair<TextToSpeech, Boolean> getTtsAndWhetherNew(
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TextToSpeech.OnInitListener listener) {
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boolean ttsCreated = false;
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if (mTts == null) {
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mTts = new TextToSpeech(this.mApplication, listener);
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ttsCreated = true;
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}
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return Pair.create(mTts, ttsCreated);
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}
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}
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