Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*******************************************************************************
 * Copyright (C) 2014 MUSE team Inria Paris - Rocquencourt
 * 
 * This file is part of UCNDataCollector.
 * 
 * UCNDataCollector is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * UCNDataCollector is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero Public License for more details.
 * 
 * You should have received a copy of the GNU Affero Public License
 * along with UCNDataCollector.  If not, see <http://www.gnu.org/licenses/>.
 ******************************************************************************/

import java.io.UnsupportedEncodingException;

import java.util.UUID;

import android.content.Context;

import android.content.SharedPreferences;

import android.provider.Settings.Secure;
import android.telephony.TelephonyManager;

public class Main {
    private static final String ID_PREFS_FILE = "ucn_device_id.xml";
    private static final String ID_PREFS_DEVICE_ID = "ucn_device_id";
    private static final String BAD_UUID = "9774d56d682e549c";

    private static UUID getUuid(Context c) {
        final SharedPreferences prefs = c.getSharedPreferences(ID_PREFS_FILE, Context.MODE_PRIVATE);
        final String id = prefs.getString(ID_PREFS_DEVICE_ID, null);
        final UUID uuid;
        if (id != null) {
            uuid = UUID.fromString(id);
        } else {
            final String androidId = Secure.getString(c.getContentResolver(), Secure.ANDROID_ID);
            try {
                if (!BAD_UUID.equals(androidId)) {
                    uuid = UUID.nameUUIDFromBytes(androidId.getBytes("utf8"));
                } else {
                    final String deviceId = ((TelephonyManager) c.getSystemService(Context.TELEPHONY_SERVICE))
                            .getDeviceId();
                    if (deviceId != null)
                        uuid = UUID.nameUUIDFromBytes(deviceId.getBytes("utf8"));
                    else
                        uuid = UUID.randomUUID();
                }
            } catch (UnsupportedEncodingException e) {
                throw new RuntimeException(e);
            }
            prefs.edit().putString(ID_PREFS_DEVICE_ID, uuid.toString()).commit();
        }
        return uuid;
    }
}