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Diffstat (limited to 'AutoMessagingDemo/app/src/main/java/com/example/android/automessagingdemo/MessageLogger.java')
-rw-r--r-- | AutoMessagingDemo/app/src/main/java/com/example/android/automessagingdemo/MessageLogger.java | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/AutoMessagingDemo/app/src/main/java/com/example/android/automessagingdemo/MessageLogger.java b/AutoMessagingDemo/app/src/main/java/com/example/android/automessagingdemo/MessageLogger.java new file mode 100644 index 0000000..e899a71 --- /dev/null +++ b/AutoMessagingDemo/app/src/main/java/com/example/android/automessagingdemo/MessageLogger.java @@ -0,0 +1,57 @@ +/* + * Copyright (C) 2014 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.automessagingdemo; + +import android.content.Context; +import android.content.SharedPreferences; + +import java.text.SimpleDateFormat; +import java.util.Date; + +/** + * A simple logger that uses shared preferences to log messages, their reads + * and replies. Don't use this in a real world application. This logger is only + * used for displaying the messages in the text view. + */ +public class MessageLogger { + + private static final String PREF_MESSAGE = "MESSAGE_LOGGER"; + private static final SimpleDateFormat DATE_FORMAT = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); + + public static final String LOG_KEY = "message_data"; + public static final String LINE_BREAKS = "\n\n"; + + public static void logMessage(Context context, String message) { + SharedPreferences prefs = getPrefs(context); + message = DATE_FORMAT.format(new Date(System.currentTimeMillis())) + ": " + message; + prefs.edit() + .putString(LOG_KEY, prefs.getString(LOG_KEY, "") + LINE_BREAKS + message) + .apply(); + } + + public static SharedPreferences getPrefs(Context context) { + return context.getSharedPreferences(PREF_MESSAGE, Context.MODE_PRIVATE); + } + + public static String getAllMessages(Context context) { + return getPrefs(context).getString(LOG_KEY, ""); + } + + public static void clear(Context context) { + getPrefs(context).edit().remove(LOG_KEY).apply(); + } +} |