Renato Mangini | ebeca0e | 2014-11-11 17:55:39 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2014 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 | |
| 17 | package com.example.android.messagingservice; |
| 18 | |
| 19 | import android.content.Context; |
| 20 | import android.content.SharedPreferences; |
| 21 | |
| 22 | import java.text.SimpleDateFormat; |
| 23 | import java.util.Date; |
| 24 | |
| 25 | /** |
| 26 | * A simple logger that uses shared preferences to log messages, their reads |
| 27 | * and replies. Don't use this in a real world application. This logger is only |
| 28 | * used for displaying the messages in the text view. |
| 29 | */ |
| 30 | public class MessageLogger { |
| 31 | |
| 32 | private static final String PREF_MESSAGE = "MESSAGE_LOGGER"; |
| 33 | private static final SimpleDateFormat DATE_FORMAT = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); |
| 34 | |
| 35 | public static final String LOG_KEY = "message_data"; |
| 36 | public static final String LINE_BREAKS = "\n\n"; |
| 37 | |
| 38 | public static void logMessage(Context context, String message) { |
| 39 | SharedPreferences prefs = getPrefs(context); |
| 40 | message = DATE_FORMAT.format(new Date(System.currentTimeMillis())) + ": " + message; |
| 41 | prefs.edit() |
| 42 | .putString(LOG_KEY, prefs.getString(LOG_KEY, "") + LINE_BREAKS + message) |
| 43 | .apply(); |
| 44 | } |
| 45 | |
| 46 | public static SharedPreferences getPrefs(Context context) { |
| 47 | return context.getSharedPreferences(PREF_MESSAGE, Context.MODE_PRIVATE); |
| 48 | } |
| 49 | |
| 50 | public static String getAllMessages(Context context) { |
| 51 | return getPrefs(context).getString(LOG_KEY, ""); |
| 52 | } |
| 53 | |
| 54 | public static void clear(Context context) { |
| 55 | getPrefs(context).edit().remove(LOG_KEY).apply(); |
| 56 | } |
| 57 | } |