| /* |
| * Copyright (C) 2013 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.example.android.cardemulation; |
| |
| import android.content.Context; |
| import android.content.SharedPreferences; |
| import android.preference.PreferenceManager; |
| import android.util.Log; |
| |
| /** |
| * Utility class for persisting account numbers to disk. |
| * |
| * <p>The default SharedPreferences instance is used as the backing storage. Values are cached |
| * in memory for performance. |
| * |
| * <p>This class is thread-safe. |
| */ |
| public class AccountStorage { |
| private static final String PREF_ACCOUNT_NUMBER = "account_number"; |
| private static final String DEFAULT_ACCOUNT_NUMBER = "00000000"; |
| private static final String TAG = "AccountStorage"; |
| private static String sAccount = null; |
| private static final Object sAccountLock = new Object(); |
| |
| public static void SetAccount(Context c, String s) { |
| synchronized(sAccountLock) { |
| Log.i(TAG, "Setting account number: " + s); |
| SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(c); |
| prefs.edit().putString(PREF_ACCOUNT_NUMBER, s).commit(); |
| sAccount = s; |
| } |
| } |
| |
| public static String GetAccount(Context c) { |
| synchronized (sAccountLock) { |
| if (sAccount == null) { |
| SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(c); |
| String account = prefs.getString(PREF_ACCOUNT_NUMBER, DEFAULT_ACCOUNT_NUMBER); |
| sAccount = account; |
| } |
| return sAccount; |
| } |
| } |
| } |