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Diffstat (limited to 'src/com/android/tv/tuner/util/PostalCodeUtils.java')
| -rw-r--r-- | src/com/android/tv/tuner/util/PostalCodeUtils.java | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/src/com/android/tv/tuner/util/PostalCodeUtils.java b/src/com/android/tv/tuner/util/PostalCodeUtils.java new file mode 100644 index 00000000..3942ce95 --- /dev/null +++ b/src/com/android/tv/tuner/util/PostalCodeUtils.java @@ -0,0 +1,89 @@ +/* + * 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() { + } + } +}
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