1 /* 2 * Copyright (C) 2019 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.settings.network.telephony; 18 19 import android.content.Context; 20 import android.os.PersistableBundle; 21 import android.telephony.CarrierConfigManager; 22 import android.telephony.SubscriptionManager; 23 24 import com.android.settings.core.BasePreferenceController; 25 26 import java.util.concurrent.atomic.AtomicInteger; 27 28 /** 29 * {@link BasePreferenceController} that used by all preferences that requires subscription id. 30 */ 31 public abstract class TelephonyBasePreferenceController extends BasePreferenceController 32 implements TelephonyAvailabilityCallback, TelephonyAvailabilityHandler { 33 protected int mSubId; 34 private AtomicInteger mAvailabilityStatus = new AtomicInteger(0); 35 private AtomicInteger mSetSessionCount = new AtomicInteger(0); 36 TelephonyBasePreferenceController(Context context, String preferenceKey)37 public TelephonyBasePreferenceController(Context context, String preferenceKey) { 38 super(context, preferenceKey); 39 mSubId = SubscriptionManager.INVALID_SUBSCRIPTION_ID; 40 } 41 42 @Override getAvailabilityStatus()43 public int getAvailabilityStatus() { 44 if (mSetSessionCount.get() <= 0) { 45 mAvailabilityStatus.set(MobileNetworkUtils 46 .getAvailability(mContext, mSubId, this::getAvailabilityStatus)); 47 } 48 return mAvailabilityStatus.get(); 49 } 50 51 @Override setAvailabilityStatus(int status)52 public void setAvailabilityStatus(int status) { 53 mAvailabilityStatus.set(status); 54 mSetSessionCount.getAndIncrement(); 55 } 56 57 @Override unsetAvailabilityStatus()58 public void unsetAvailabilityStatus() { 59 mSetSessionCount.getAndDecrement(); 60 } 61 62 /** 63 * Get carrier config based on specific subscription id. 64 * 65 * @param subId is the subscription id 66 * @return {@link PersistableBundle} of carrier config, or {@code null} when carrier config 67 * is not available. 68 */ getCarrierConfigForSubId(int subId)69 public PersistableBundle getCarrierConfigForSubId(int subId) { 70 if (!SubscriptionManager.isValidSubscriptionId(subId)) { 71 return null; 72 } 73 final CarrierConfigManager carrierConfigMgr = 74 mContext.getSystemService(CarrierConfigManager.class); 75 return carrierConfigMgr.getConfigForSubId(subId); 76 } 77 } 78