Update browseable samples for lmp-docs

Synced to commit df5e5013422b81b4fd05c0ac9fd964b13624847a. Includes
new samples for Android Auto.

Change-Id: I3fec46e2a6b3f196682a92f1afd91eb682dc2dc1

1 files changed, 57 insertions, 0 deletions

diff --git a/samples/browseable/MessagingService/src/com.example.android.messagingservice/MessageLogger.java b/samples/browseable/MessagingService/src/com.example.android.messagingservice/MessageLogger.java
new file mode 100644
index 000000000..d1007b5ad
--- /dev/null
+++ b/samples/browseable/MessagingService/src/com.example.android.messagingservice/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.messagingservice;
+
+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();
+    }
+}