1 /*
2  * Copyright (C) 2020 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;
18 
19 import android.content.BroadcastReceiver;
20 import android.content.Context;
21 import android.content.Intent;
22 import android.content.IntentFilter;
23 import android.telephony.CarrierConfigManager;
24 import android.util.Log;
25 
26 import java.util.concurrent.CountDownLatch;
27 
28 /** A receiver listens to the carrier config changes. */
29 public class CarrierConfigChangedReceiver extends BroadcastReceiver {
30     private static final String TAG = "CarrierConfigChangedReceiver";
31     private static final String ACTION_CARRIER_CONFIG_CHANGED =
32             CarrierConfigManager.ACTION_CARRIER_CONFIG_CHANGED;
33 
34     private final CountDownLatch mLatch;
35 
CarrierConfigChangedReceiver(CountDownLatch latch)36     public CarrierConfigChangedReceiver(CountDownLatch latch) {
37         mLatch = latch;
38     }
39 
registerOn(Context context)40     public void registerOn(Context context) {
41         context.registerReceiver(this, new IntentFilter(ACTION_CARRIER_CONFIG_CHANGED),
42                 Context.RECEIVER_EXPORTED/*UNAUDITED*/);
43     }
44 
45     @Override
onReceive(Context context, Intent intent)46     public void onReceive(Context context, Intent intent) {
47         if (isInitialStickyBroadcast()) {
48             return;
49         }
50 
51         if (ACTION_CARRIER_CONFIG_CHANGED.equals(intent.getAction())) {
52             checkSubscriptionIndex(intent);
53         }
54     }
55 
checkSubscriptionIndex(Intent intent)56     private void checkSubscriptionIndex(Intent intent) {
57         if (intent.hasExtra(CarrierConfigManager.EXTRA_SUBSCRIPTION_INDEX)) {
58             int subId = intent.getIntExtra(CarrierConfigManager.EXTRA_SUBSCRIPTION_INDEX, -1);
59             Log.i(TAG, "subId from config changed: " + subId);
60             mLatch.countDown();
61         }
62     }
63 }
64