1 /*
2  * Copyright (C) 2013 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 package com.android.contacts.common.util;
17 
18 import android.content.Context;
19 import android.telephony.PhoneNumberUtils;
20 import android.telephony.TelephonyManager;
21 import android.text.TextUtils;
22 import android.util.Log;
23 
24 import java.util.Locale;
25 
26 /**
27  * This class provides several TelephonyManager util functions.
28  */
29 public class TelephonyManagerUtils {
30 
31     private static final String LOG_TAG = TelephonyManagerUtils.class.getSimpleName();
32 
33     /**
34      * Gets the voicemail tag from Telephony Manager.
35      * @param context Current application context
36      * @return Voicemail tag, the alphabetic identifier associated with the voice mail number.
37      */
getVoiceMailAlphaTag(Context context)38     public static String getVoiceMailAlphaTag(Context context) {
39         final TelephonyManager telephonyManager =
40                 (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
41         final String voiceMailLabel = telephonyManager.getVoiceMailAlphaTag();
42         return voiceMailLabel;
43     }
44 
45     /**
46      * @return The ISO 3166-1 two letters country code of the country the user
47      *         is in based on the network location. If the network location does not exist, fall
48      *         back to the locale setting.
49      */
getCurrentCountryIso(Context context, Locale locale)50     public static String getCurrentCountryIso(Context context, Locale locale) {
51         // Without framework function calls, this seems to be the most accurate location service
52         // we can rely on.
53         final TelephonyManager telephonyManager =
54             (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
55         String countryIso = telephonyManager.getNetworkCountryIso().toUpperCase();
56 
57         if (countryIso == null) {
58             countryIso = locale.getCountry();
59             Log.w(LOG_TAG, "No CountryDetector; falling back to countryIso based on locale: "
60                     + countryIso);
61         }
62         return countryIso;
63     }
64 
65     /**
66      * @param context Current application context.
67      * @return True if there is a subscription which supports video calls. False otherwise.
68      */
hasVideoCallSubscription(Context context)69     public static boolean hasVideoCallSubscription(Context context) {
70         // TODO: Check the telephony manager's subscriptions to see if any support video calls.
71         return true;
72     }
73 }
74