| /* |
| * Copyright (C) 2019 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 com.android.car.settings.network; |
| |
| import android.content.BroadcastReceiver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.telephony.SubscriptionManager; |
| |
| import com.android.internal.telephony.TelephonyIntents; |
| |
| /** Listens to changes in availability of telephony subscriptions. */ |
| public class SubscriptionsChangeListener { |
| |
| /** Client defined action to trigger when there are subscription changes. */ |
| public interface SubscriptionsChangeAction { |
| /** Action taken when subscriptions changed. */ |
| void onSubscriptionsChanged(); |
| } |
| |
| private static final IntentFilter RADIO_TECH_CHANGED_FILTER = new IntentFilter( |
| TelephonyIntents.ACTION_RADIO_TECHNOLOGY_CHANGED); |
| |
| private final Context mContext; |
| private final SubscriptionManager mSubscriptionManager; |
| private final SubscriptionsChangeAction mSubscriptionsChangeAction; |
| |
| private final SubscriptionManager.OnSubscriptionsChangedListener mSubscriptionsChangedListener = |
| new SubscriptionManager.OnSubscriptionsChangedListener() { |
| @Override |
| public void onSubscriptionsChanged() { |
| subscriptionsChangedCallback(); |
| } |
| }; |
| |
| private final BroadcastReceiver mRadioTechChangeReceiver = new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| if (!isInitialStickyBroadcast()) { |
| subscriptionsChangedCallback(); |
| } |
| } |
| }; |
| |
| public SubscriptionsChangeListener(Context context, SubscriptionsChangeAction action) { |
| mContext = context; |
| mSubscriptionManager = context.getSystemService(SubscriptionManager.class); |
| mSubscriptionsChangeAction = action; |
| } |
| |
| /** Starts the various listeners necessary to track changes in telephony subscriptions. */ |
| public void start() { |
| mSubscriptionManager.addOnSubscriptionsChangedListener(mSubscriptionsChangedListener); |
| mContext.registerReceiver(mRadioTechChangeReceiver, RADIO_TECH_CHANGED_FILTER); |
| } |
| |
| /** Stops the various listeners necessary to track changes in telephony subscriptions. */ |
| public void stop() { |
| mSubscriptionManager.removeOnSubscriptionsChangedListener(mSubscriptionsChangedListener); |
| mContext.unregisterReceiver(mRadioTechChangeReceiver); |
| } |
| |
| private void subscriptionsChangedCallback() { |
| if (mSubscriptionsChangeAction != null) { |
| mSubscriptionsChangeAction.onSubscriptionsChanged(); |
| } |
| } |
| } |