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.car.settings.network; 18 19 import android.content.Context; 20 import android.net.ConnectivityManager; 21 import android.net.Network; 22 import android.net.NetworkCapabilities; 23 import android.telephony.SubscriptionInfo; 24 import android.telephony.SubscriptionManager; 25 import android.telephony.TelephonyManager; 26 27 import java.util.List; 28 29 /** Provides helpful utilities surrounding network related tasks. */ 30 public final class NetworkUtils { 31 NetworkUtils()32 private NetworkUtils() { 33 } 34 35 /** Returns {@code true} if device has a mobile network. */ hasMobileNetwork(ConnectivityManager connectivityManager)36 public static boolean hasMobileNetwork(ConnectivityManager connectivityManager) { 37 Network[] networks = connectivityManager.getAllNetworks(); 38 for (Network network : networks) { 39 NetworkCapabilities capabilities = connectivityManager.getNetworkCapabilities(network); 40 if (capabilities.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR)) { 41 return true; 42 } 43 } 44 return false; 45 } 46 47 /** Returns {@code true} if device has a sim card. */ hasSim(TelephonyManager telephonyManager)48 public static boolean hasSim(TelephonyManager telephonyManager) { 49 int simState = telephonyManager.getSimState(); 50 51 // Note that pulling out the SIM card returns UNKNOWN, not ABSENT. 52 return simState != TelephonyManager.SIM_STATE_ABSENT 53 && simState != TelephonyManager.SIM_STATE_UNKNOWN; 54 } 55 56 /** 57 * Sets the mobile data enabled state based on {@code enabled} for the subscription defined by 58 * {@code subId}. If {@code disableOtherSubscriptions} is set, other subscriptions will be 59 * disabled unless they are opportunistic. 60 */ setMobileDataEnabled(Context context, int subId, boolean enabled, boolean disableOtherSubscriptions)61 public static void setMobileDataEnabled(Context context, int subId, boolean enabled, 62 boolean disableOtherSubscriptions) { 63 TelephonyManager telephonyManager = context.getSystemService(TelephonyManager.class) 64 .createForSubscriptionId(subId); 65 SubscriptionManager subscriptionManager = context.getSystemService( 66 SubscriptionManager.class); 67 telephonyManager.setDataEnabled(enabled); 68 69 if (disableOtherSubscriptions) { 70 List<SubscriptionInfo> subInfoList = 71 subscriptionManager.getActiveSubscriptionInfoList(); 72 if (subInfoList != null) { 73 for (SubscriptionInfo subInfo : subInfoList) { 74 // We never disable mobile data for opportunistic subscriptions. 75 if (subInfo.getSubscriptionId() != subId && !subInfo.isOpportunistic()) { 76 context.getSystemService(TelephonyManager.class).createForSubscriptionId( 77 subInfo.getSubscriptionId()).setDataEnabled(false); 78 } 79 } 80 } 81 } 82 } 83 } 84