1 /* 2 * Copyright (C) 2017 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.wifi; 18 19 import android.content.Context; 20 import android.content.res.Resources; 21 import android.provider.Settings; 22 import android.telephony.SubscriptionManager; 23 24 import com.android.internal.annotations.VisibleForTesting; 25 import com.android.settings.core.TogglePreferenceController; 26 27 /** 28 * CellularFallbackPreferenceController controls whether we should fall back to celluar when 29 * wifi is bad. 30 */ 31 public class CellularFallbackPreferenceController extends TogglePreferenceController { 32 CellularFallbackPreferenceController(Context context, String key)33 public CellularFallbackPreferenceController(Context context, String key) { 34 super(context, key); 35 } 36 37 @Override getAvailabilityStatus()38 public int getAvailabilityStatus() { 39 return avoidBadWifiConfig() ? UNSUPPORTED_ON_DEVICE : AVAILABLE; 40 } 41 42 @Override isChecked()43 public boolean isChecked() { 44 return avoidBadWifiCurrentSettings(); 45 } 46 47 @Override setChecked(boolean isChecked)48 public boolean setChecked(boolean isChecked) { 49 // On: avoid bad wifi. Off: prompt. 50 return Settings.Global.putString(mContext.getContentResolver(), 51 Settings.Global.NETWORK_AVOID_BAD_WIFI, isChecked ? "1" : null); 52 } 53 avoidBadWifiConfig()54 private boolean avoidBadWifiConfig() { 55 final int activeDataSubscriptionId = getActiveDataSubscriptionId(); 56 if (activeDataSubscriptionId == SubscriptionManager.INVALID_SUBSCRIPTION_ID) { 57 return true; 58 } 59 60 final Resources resources = getResourcesForSubId(activeDataSubscriptionId); 61 return resources.getInteger(com.android.internal.R.integer.config_networkAvoidBadWifi) == 1; 62 } 63 64 @VisibleForTesting getActiveDataSubscriptionId()65 int getActiveDataSubscriptionId() { 66 return SubscriptionManager.getActiveDataSubscriptionId(); 67 } 68 69 @VisibleForTesting getResourcesForSubId(int subscriptionId)70 Resources getResourcesForSubId(int subscriptionId) { 71 return SubscriptionManager.getResourcesForSubId(mContext, subscriptionId); 72 } 73 avoidBadWifiCurrentSettings()74 private boolean avoidBadWifiCurrentSettings() { 75 return "1".equals(Settings.Global.getString(mContext.getContentResolver(), 76 Settings.Global.NETWORK_AVOID_BAD_WIFI)); 77 } 78 }