Returns the number of bytes of external storage available. - Android Hardware

Android examples for Hardware:Storage

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Description

Returns the number of bytes of external storage available.

Demo Code

/*//from w w  w  .  java  2 s  .  c  o  m
 *  AndroidUtils.java
 *  ARToolKit5
 *
 *  This file is part of ARToolKit.
 *
 *  ARToolKit is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Lesser General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  ARToolKit 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 Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public License
 *  along with ARToolKit.  If not, see <http://www.gnu.org/licenses/>.
 *
 *  As a special exception, the copyright holders of this library give you
 *  permission to link this library with independent modules to produce an
 *  executable, regardless of the license terms of these independent modules, and to
 *  copy and distribute the resulting executable under terms of your choice,
 *  provided that you also meet, for each linked independent module, the terms and
 *  conditions of the license of that module. An independent module is a module
 *  which is neither derived from nor based on this library. If you modify this
 *  library, you may extend this exception to your version of the library, but you
 *  are not obligated to do so. If you do not wish to do so, delete this exception
 *  statement from your version.
 *
 *  Copyright 2015 Daqri, LLC.
 *  Copyright 2011-2015 ARToolworks, Inc.
 *
 *  Author(s): Julian Looser, Philip Lamb
 *
 */
//package com.java2s;
import java.io.File;

import android.os.Environment;
import android.os.StatFs;

public class Main {
    /**
     * Returns the number of bytes of external storage available.
     * @return Bytes of external storage available.
     */
    static public long getAvailableExternalMemorySize() {
        if (isSDCardMounted()) {
            File path = Environment.getExternalStorageDirectory();
            StatFs stat = new StatFs(path.getPath());
            long blockSize = stat.getBlockSize();
            long availableBlocks = stat.getAvailableBlocks();
            return availableBlocks * blockSize;
        } else {
            return -1;
        }
    }

    /**
     * Returns whether or not there is an SD card mounted.
     * @return true if an SD card is mounted, otherwise false.
     */
    public static boolean isSDCardMounted() {
        return android.os.Environment.getExternalStorageState().equals(
                android.os.Environment.MEDIA_MOUNTED);
    }
}

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