Uses the meminfo command to get the exact available RAM - Android Hardware

Android examples for Hardware:Memory

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Description

Uses the meminfo command to get the exact available RAM

Demo Code

/*******************************************************************************
 * Copyright (c) 2011 MadRobot.//from  www  .j a  v  a 2 s.  co m
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Lesser Public License v2.1
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * 
 * Contributors:
 *  Elton Kent - initial API and implementation
 ******************************************************************************/
//package com.java2s;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;

import java.util.StringTokenizer;

public class Main {
    private static final String MEM_INFO_FILE = "/proc/meminfo";

    /**
     * Usses the <code>meminfo</code> command to get the exact available RAM
     * 
     * @return Available RAM size. 0 if the command failed.
     * @throws IOException
     */
    public static int getRam() throws IOException {
        String ram = null;
        BufferedReader in = null;
        in = new BufferedReader(new FileReader(MEM_INFO_FILE));
        String str;
        while ((str = in.readLine()) != null) {
            if (str.startsWith("MemTotal:")) {
                ram = str;
                break;
            }
        }
        in.close();
        if (ram != null && ram.length() > 0) {
            StringTokenizer token = new StringTokenizer(ram, ":");
            while (token.hasMoreElements()) {
                ram = (String) token.nextElement();
            }
            ram = ram.trim();
        }
        Integer ramValue = null;
        try {
            ramValue = Integer.parseInt(ram.substring(0, ram.length() - 3));
        } catch (Exception e) {
            return 0;
        }

        if (ramValue > 0) {
            return ramValue;
        }
        return 0;
    }
}

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