Android File to Byte Array Read getByteArrayFromSD(String path)

Description

get Byte Array From SD

License

Apache License

Declaration

public static byte[] getByteArrayFromSD(String path) 

Method Source Code

//package com.java2s;
/*/*from   w  w  w.j a v a  2  s  . c o  m*/
 * Copyright (C) 2013 www.418log.org
 * 
 * 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.
 */

import java.io.ByteArrayOutputStream;

import java.io.File;
import java.io.FileInputStream;

import android.os.Environment;

public class Main {

    public static byte[] getByteArrayFromSD(String path) {
        byte[] bytes = null;
        ByteArrayOutputStream out = null;
        try {
            File file = new File(path);
            if (!isCanUseSD()) {
                return null;
            }
            if (!file.exists()) {
                return null;
            }

            long fileSize = file.length();
            if (fileSize > Integer.MAX_VALUE) {
                return null;
            }

            FileInputStream in = new FileInputStream(path);
            out = new ByteArrayOutputStream(1024);
            byte[] buffer = new byte[1024];
            int size = 0;
            while ((size = in.read(buffer)) != -1) {
                out.write(buffer, 0, size);
            }
            in.close();
            bytes = out.toByteArray();

        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (out != null) {
                try {
                    out.close();
                } catch (Exception e) {
                }
            }
        }
        return bytes;
    }

    public static boolean isCanUseSD() {
        try {
            return Environment.getExternalStorageState().equals(
                    Environment.MEDIA_MOUNTED);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return false;
    }
}

Related

1. file2byte(File file)
2. file2byte(String path)
3. getByteFromFile(String fileName)
4. getAvailableBytes(File root)
5. getAvailableBytes(File root)