e7de4a415d
This is for monitoring the status of service state when Lifecycle state STARTED or RESUMED. Bug: 229689535 Test: unit test Change-Id: If6bac5c04caae67d6293c5a69e3130789e9e588e
105 lines
3.5 KiB
Java
105 lines
3.5 KiB
Java
/*
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* Copyright (C) 2022 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.network.helper;
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import android.telephony.ServiceState;
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import android.telephony.TelephonyCallback;
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import android.telephony.TelephonyManager;
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import android.util.Log;
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import androidx.annotation.NonNull;
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import androidx.annotation.VisibleForTesting;
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import androidx.lifecycle.Lifecycle;
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import androidx.lifecycle.LiveData;
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import java.util.concurrent.Executor;
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import java.util.function.Consumer;
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/**
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* A {@link LiveData} as a mapping of allowed network types reported from {@link TelephonyCallback}.
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* Only got update when Lifecycle.State is considered as STARTED or RESUMED.
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*
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* {@code null} when status unknown. Other values are {@link ServiceState}.
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*/
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@VisibleForTesting
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public class ServiceStateStatus extends LiveData<ServiceState> {
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private static final String TAG = "ServiceStateStatus";
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@VisibleForTesting
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protected ServiceStateProducer mServiceStateProducer;
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@VisibleForTesting
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protected LifecycleCallbackTelephonyAdapter mAdapter;
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@VisibleForTesting
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protected Consumer<ServiceState> mLiveDataUpdater = status -> setValue(status);
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/**
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* Constructor
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* @param lifecycle {@link Lifecycle} to monitor
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* @param telephonyManager {@link TelephonyManager} to interact with
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* @param executor {@link Executor} for receiving the notify from telephony framework.
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*/
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@VisibleForTesting
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public ServiceStateStatus(@NonNull Lifecycle lifecycle,
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@NonNull TelephonyManager telephonyManager, Executor executor) {
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super();
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mServiceStateProducer = new ServiceStateProducer(this);
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mAdapter = new LifecycleCallbackTelephonyAdapter<ServiceState>(lifecycle,
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telephonyManager, mServiceStateProducer, executor, mLiveDataUpdater) {
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@Override
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public void setCallbackActive(boolean isActive) {
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super.setCallbackActive(isActive);
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if (!isActive) {
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/**
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* Set to unknown status when no longer actively monitoring
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* {@link TelephonyCallback}.
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*/
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mLiveDataUpdater.accept(null);
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}
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}
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};
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}
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/**
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* An implementation of TelephonyCallback.
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*
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* Change of allowed network type will be forward to
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* {@link LifecycleCallbackTelephonyAdapter}.
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*/
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@VisibleForTesting
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protected static class ServiceStateProducer extends TelephonyCallback
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implements TelephonyCallback.ServiceStateListener {
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private final ServiceStateStatus mStatus;
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/**
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* Constructor
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* @param status {@link ServiceStateStatus}
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*/
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public ServiceStateProducer(ServiceStateStatus status) {
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mStatus = status;
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}
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@Override
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public void onServiceStateChanged(ServiceState serviceState) {
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mStatus.mAdapter.postResult(serviceState);
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}
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}
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}
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