file To Byte array - Android File Input Output

Android examples for File Input Output:Byte Array

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Description

file To Byte array

Demo Code


//package com.java2s;

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

public class Main {

    private static final int CACHE_SIZE = 1024;

    public static byte[] fileToByte(String filePath) throws Exception {
        byte[] data = new byte[0];
        File file = new File(filePath);
        if (file.exists()) {
            FileInputStream in = new FileInputStream(file);
            ByteArrayOutputStream out = new ByteArrayOutputStream(2048);
            byte[] cache = new byte[CACHE_SIZE];
            int nRead = 0;
            while ((nRead = in.read(cache)) != -1) {
                out.write(cache, 0, nRead);
                out.flush();// w  ww  .  j av a2  s. c  o m
            }
            out.close();
            in.close();
            data = out.toByteArray();
        }
        return data;
    }
}

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