| /* |
| * Copyright (C) 2017 The Android Open Source Project |
| * |
| * 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 com.android.tv.tuner.util; |
| |
| import android.content.Context; |
| import android.location.Address; |
| import android.support.annotation.Nullable; |
| import android.text.TextUtils; |
| import android.util.Log; |
| |
| import com.android.tv.tuner.TunerPreferences; |
| import com.android.tv.util.LocationUtils; |
| |
| import java.io.IOException; |
| import java.util.Locale; |
| |
| /** |
| * A utility class to update, get, and set the last known postal or zip code. |
| */ |
| public class PostalCodeUtils { |
| private static final String TAG = "PostalCodeUtils"; |
| private static final String SUPPORTED_COUNTRY_CODE = Locale.US.getCountry(); |
| |
| /** Returns {@code true} if postal code has been changed */ |
| public static boolean updatePostalCode(Context context) |
| throws IOException, SecurityException, NoPostalCodeException { |
| String postalCode = getPostalCode(context); |
| String lastPostalCode = getLastPostalCode(context); |
| if (TextUtils.isEmpty(postalCode)) { |
| if (TextUtils.isEmpty(lastPostalCode)) { |
| throw new NoPostalCodeException(); |
| } |
| } else if (!TextUtils.equals(postalCode, lastPostalCode)) { |
| setLastPostalCode(context, postalCode); |
| return true; |
| } |
| return false; |
| } |
| |
| /** |
| * Gets the last stored postal or zip code, which might be decided by {@link LocationUtils} or |
| * input by users. |
| */ |
| public static String getLastPostalCode(Context context) { |
| return TunerPreferences.getLastPostalCode(context); |
| } |
| |
| /** |
| * Sets the last stored postal or zip code. This method will overwrite the value written by |
| * calling {@link #updatePostalCode(Context)}. |
| */ |
| public static void setLastPostalCode(Context context, String postalCode) { |
| Log.i(TAG, "Set Postal Code:" + postalCode); |
| TunerPreferences.setLastPostalCode(context, postalCode); |
| } |
| |
| @Nullable |
| private static String getPostalCode(Context context) throws IOException, SecurityException { |
| Address address = LocationUtils.getCurrentAddress(context); |
| if (address != null) { |
| Log.i(TAG, "Current country and postal code is " + address.getCountryName() + ", " |
| + address.getPostalCode()); |
| if (TextUtils.equals(address.getCountryCode(), SUPPORTED_COUNTRY_CODE)) { |
| return address.getPostalCode(); |
| } |
| } |
| return null; |
| } |
| |
| /** An {@link java.lang.Exception} class to notify no valid postal or zip code is available. */ |
| public static class NoPostalCodeException extends Exception { |
| public NoPostalCodeException() { |
| } |
| } |
| } |