Android How to - Zip/unzip byte array and String

Question

We would like to know how to zip/unzip byte array and String.
Answer

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.zip.Deflater;
import java.util.zip.Inflater;
//from   w w  w .j  a v  a2  s  .c o m
public class Main {

  private final static int CacheSize = 1024;

  public static byte[] zipByte(byte[] data) {
    Deflater compresser = new Deflater();
    compresser.reset();
    compresser.setInput(data);
    compresser.finish();
    byte result[] = new byte[0];
    ByteArrayOutputStream o = new ByteArrayOutputStream(1);
    try {
      byte[] buf = new byte[CacheSize];
      int got = 0;
      while (!compresser.finished()) {
        got = compresser.deflate(buf);
        o.write(buf, 0, got);
      }

      result = o.toByteArray();
    } catch (Exception e) {
      e.printStackTrace();
    } finally {
      try {
        o.close();
      } catch (IOException e) {
        e.printStackTrace();
      }
      compresser.end();
    }
    return result;
  }

  public static byte[] zipString(String data) {
    byte[] input = new byte[0];
    try {
      input = data.getBytes("UTF-8");
    } catch (UnsupportedEncodingException e) {
      e.printStackTrace();
      return null;
    }

    byte[] result = zipByte(input);
    return result;
  }

  public static byte[] unZipByte(byte[] data) {
    Inflater decompresser = new Inflater();
    decompresser.setInput(data);
    byte result[] = new byte[0];
    ByteArrayOutputStream o = new ByteArrayOutputStream(1);
    try {
      byte[] buf = new byte[CacheSize];
      int got = 0;
      while (!decompresser.finished()) {
        got = decompresser.inflate(buf);
        o.write(buf, 0, got);
      }
      result = o.toByteArray();
    } catch (Exception e) {
      e.printStackTrace();
    } finally {
      try {
        o.close();
      } catch (IOException e) {
        e.printStackTrace();
      }
      decompresser.end();
    }
    return result;
  }

  public static String unZipByteToString(byte[] data) {
    byte[] result = unZipByte(data);
    String outputString = null;
    try {
      outputString = new String(result, 0, result.length, "UTF-8");
    } catch (UnsupportedEncodingException e) {
      e.printStackTrace();
    }
    return outputString;
  }
}