Android ByteBuffer Ungzip uncompressGZip(ByteBuffer bytes)

Description

uncompress G Zip

Declaration

public static String uncompressGZip(ByteBuffer bytes) throws Exception 

Method Source Code

//package com.java2s;
import android.util.Log;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;

import java.io.OutputStream;
import java.math.BigDecimal;
import java.nio.ByteBuffer;
import java.text.DecimalFormat;

import java.util.zip.GZIPInputStream;

public class Main {
    static final DecimalFormat df = new DecimalFormat(
            "###,###,###,###,###,###,###,##0.00");

    public static String uncompressGZip(ByteBuffer bytes) throws Exception {
        Log.w("ZipUtil",
                "## packed length: " + getKilobytes(bytes.capacity()));
        GZIPInputStream gzipInputStream = new GZIPInputStream(
                new ByteArrayInputStream(bytes.array()));
        OutputStream out = new ByteArrayOutputStream();
        byte[] buf = new byte[1024];
        int len;/* ww w. j a v  a2s  .c o m*/
        while ((len = gzipInputStream.read(buf)) > 0) {
            out.write(buf, 0, len);
        }
        gzipInputStream.close();
        out.close();

        String res = out.toString();
        Log.i("ZipUtil",
                "## unpacked length, in KB: " + getKilobytes(res.length()));
        return res;

    }

    public static String getKilobytes(int bytes) {
        BigDecimal m = new BigDecimal(bytes).divide(new BigDecimal(1024));
        return df.format(m.doubleValue()) + " KB";
    }
}

Related

1. uncompressGZip(ByteBuffer bytes)