Java tutorial
/* * Copyright 2017 OpenMarket Ltd * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package im.vector.util; import android.content.Context; import android.content.SharedPreferences; import android.preference.PreferenceManager; import android.support.v4.util.Pair; import android.telephony.TelephonyManager; import android.text.TextUtils; import com.google.i18n.phonenumbers.PhoneNumberUtil; import com.google.i18n.phonenumbers.Phonenumber; import org.matrix.androidsdk.util.Log; import java.util.ArrayList; import java.util.Collections; import java.util.Comparator; import java.util.HashMap; import java.util.List; import java.util.Locale; import java.util.Map; /** * This class contains the phone number toolbox */ public class PhoneNumberUtils { private static final String LOG_TAG = "PhoneNumberUtils"; // preference keys public static final String COUNTRY_CODE_PREF_KEY = "COUNTRY_CODE_PREF_KEY"; private static String[] mCountryCodes; private static String[] mCountryNames; // ex FR -> France private static Map<String, String> mCountryNameByCC; // ex FR -> 33 private static List<CountryPhoneData> mCountryIndicatorList; /** * Build the country codes list */ private static void buildCountryCodesList() { if (null == mCountryCodes) { // retrieve the ISO country code String[] isoCountryCodes = Locale.getISOCountries(); List<Pair<String, String>> countryCodes = new ArrayList<>(); // retrieve the human display name for (String countryCode : isoCountryCodes) { Locale locale = new Locale("", countryCode); countryCodes.add(new Pair<>(countryCode, locale.getDisplayCountry())); } // sort by human display names Collections.sort(countryCodes, new Comparator<Pair<String, String>>() { @Override public int compare(Pair<String, String> lhs, Pair<String, String> rhs) { return lhs.second.compareTo(rhs.second); } }); mCountryNameByCC = new HashMap<>(isoCountryCodes.length); mCountryCodes = new String[isoCountryCodes.length]; mCountryNames = new String[isoCountryCodes.length]; for (int index = 0; index < isoCountryCodes.length; index++) { Pair<String, String> pair = countryCodes.get(index); mCountryCodes[index] = pair.first; mCountryNames[index] = pair.second; mCountryNameByCC.put(pair.first, pair.second); } } } /** * Get the list of all country names with their phone number indicator * * @return list of pair name - indicator */ public static List<CountryPhoneData> getCountriesWithIndicator() { if (mCountryIndicatorList == null) { mCountryIndicatorList = new ArrayList<>(); buildCountryCodesList(); for (Map.Entry<String, String> entry : mCountryNameByCC.entrySet()) { final int indicator = PhoneNumberUtil.getInstance().getCountryCodeForRegion(entry.getKey()); if (indicator > 0) { mCountryIndicatorList.add(new CountryPhoneData(entry.getKey(), entry.getValue(), indicator)); } } // sort by human display names Collections.sort(mCountryIndicatorList, new Comparator<CountryPhoneData>() { @Override public int compare(CountryPhoneData lhs, CountryPhoneData rhs) { return lhs.getCountryName().compareTo(rhs.getCountryName()); } }); } return mCountryIndicatorList; } /** * @return the country codes. */ public static String[] getCountryCodes() { buildCountryCodesList(); return mCountryCodes; } /** * @return the human readable country codes. */ public static String[] getHumanCountryCodes() { buildCountryCodesList(); return mCountryNames; } /** * Provide a human readable name for a a country code. * * @param countryCode the country code * @return the human readable name */ public static String getHumanCountryCode(final String countryCode) { buildCountryCodesList(); String name = null; if (!TextUtils.isEmpty(countryCode)) { name = mCountryNameByCC.get(countryCode); } return name; } /** * Provide the selected country code * * @param context the application context * @return the ISO country code or "" if it does not exist */ public static String getCountryCode(final Context context) { SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context); if (!preferences.contains(COUNTRY_CODE_PREF_KEY) || TextUtils.isEmpty(preferences.getString(COUNTRY_CODE_PREF_KEY, ""))) { try { TelephonyManager tm = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE); String countryCode = tm.getNetworkCountryIso().toUpperCase(); setCountryCode(context, countryCode); } catch (Exception e) { Log.e(LOG_TAG, "## getCountryCode failed " + e.getMessage()); } } return preferences.getString(COUNTRY_CODE_PREF_KEY, ""); } /** * Update the selected country code. * * @param context the context * @param countryCode the country code */ public static void setCountryCode(final Context context, final String countryCode) { SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context); SharedPreferences.Editor editor = preferences.edit(); editor.putString(COUNTRY_CODE_PREF_KEY, countryCode); editor.commit(); } /** * Compute an unique key from a text and a country code * * @param text the text * @param countryCode the country code * @return the unique key */ private static String getMapKey(final String text, final String countryCode) { return "" + countryCode + "" + text; } /** * Phone numbers cache by text. */ static HashMap<String, Object> mPhoneNumberByText = new HashMap<>(); /** * Provide libphonenumber phonenumber from an unformatted one. * * @param text the unformatted phone number * @param countryCode the cuntry code * @return the phone number */ public static Phonenumber.PhoneNumber getPhoneNumber(final String text, final String countryCode) { String key = getMapKey(text, countryCode); Phonenumber.PhoneNumber phoneNumber = null; if (mPhoneNumberByText.containsKey(key)) { Object value = mPhoneNumberByText.get(key); if (value instanceof Phonenumber.PhoneNumber) { phoneNumber = (Phonenumber.PhoneNumber) value; } } else { try { phoneNumber = PhoneNumberUtil.getInstance().parse(text, countryCode); } catch (Exception e) { Log.e(LOG_TAG, "## getPhoneNumber() : failed " + e.getMessage()); } if (null != phoneNumber) { mPhoneNumberByText.put(key, phoneNumber); } else { // add a dummy object to avoid searching twice mPhoneNumberByText.put(key, ""); } } return phoneNumber; } /** * E164 phone number by unformatted phonenumber */ static HashMap<String, String> mE164PhoneNumberByText = new HashMap<>(); /** * Convert an unformatted phone number to a E164 format one. * * @param context the coontext * @param phoneNumber the unformatted phone number * @return the E164 phone number */ public static String getE164format(final Context context, final String phoneNumber) { return getE164format(phoneNumber, getCountryCode(context)); } /** * Convert an unformatted phone number to a E164 format one. * * @param phoneNumber the unformatted phone number * @param countryCode teh country code * @return the E164 phone number */ public static String getE164format(final String phoneNumber, final String countryCode) { if (TextUtils.isEmpty(phoneNumber) || TextUtils.isEmpty(countryCode)) { return null; } String key = getMapKey(phoneNumber, countryCode); String e164Pn = mE164PhoneNumberByText.get(key); if (null == e164Pn) { e164Pn = ""; try { e164Pn = PhoneNumberUtil.getInstance().format(getPhoneNumber(phoneNumber, countryCode), PhoneNumberUtil.PhoneNumberFormat.E164); } catch (Exception e) { Log.e(LOG_TAG, "## getE164format() failed " + e.getMessage()); } if (e164Pn.startsWith("+")) { e164Pn = e164Pn.substring(1); } mE164PhoneNumberByText.put(key, e164Pn); } return !TextUtils.isEmpty(e164Pn) ? e164Pn : null; } /** * Convert a @{@link com.google.i18n.phonenumbers.Phonenumber.PhoneNumber} to a string with E164 format. * @param phoneNumber * @return formatted screen */ public static String getE164format(final Phonenumber.PhoneNumber phoneNumber) { String phoneNumberFormatted = null; if (phoneNumber != null) { phoneNumberFormatted = PhoneNumberUtil.getInstance().format(phoneNumber, PhoneNumberUtil.PhoneNumberFormat.E164); } return phoneNumberFormatted; } }