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 import android.text.TextUtils;
24 
25 import com.android.settings.core.BasePreferenceController;
26 import com.android.settings.network.CarrierConfigCache;
27 
28 public class CarrierSettingsVersionPreferenceController extends BasePreferenceController {
29 
30     private int mSubscriptionId;
31     private CarrierConfigCache mCarrierConfigCache;
32 
CarrierSettingsVersionPreferenceController(Context context, String preferenceKey)33     public CarrierSettingsVersionPreferenceController(Context context, String preferenceKey) {
34         super(context, preferenceKey);
35         mCarrierConfigCache = CarrierConfigCache.getInstance(context);
36         mSubscriptionId = SubscriptionManager.INVALID_SUBSCRIPTION_ID;
37     }
38 
init(int subscriptionId)39     public void init(int subscriptionId) {
40         mSubscriptionId = subscriptionId;
41     }
42 
43     @Override
getSummary()44     public CharSequence getSummary() {
45         final PersistableBundle config = mCarrierConfigCache.getConfigForSubId(mSubscriptionId);
46         if (config == null) {
47             return null;
48         }
49         return config.getString(CarrierConfigManager.KEY_CARRIER_CONFIG_VERSION_STRING);
50     }
51 
52     @Override
getAvailabilityStatus()53     public int getAvailabilityStatus() {
54         return TextUtils.isEmpty(getSummary()) ? UNSUPPORTED_ON_DEVICE : AVAILABLE;
55     }
56 }
57