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/*
* 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();
}
}
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