Java tutorial
//package com.java2s; /* * Copyright (C) 2015 AChep@xda <artemchep@gmail.com> * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, * MA 02110-1301, USA. */ import android.support.annotation.Nullable; import android.util.Base64; import java.io.ByteArrayInputStream; import java.io.IOException; import java.util.zip.GZIPInputStream; public class Main { private static final int BUFFER_SIZE = 32; @Nullable public static String decompress(String input) { StringBuilder sb = new StringBuilder(); ByteArrayInputStream is = null; GZIPInputStream gis = null; try { final byte[] bytes = Base64.decode(input, Base64.DEFAULT); is = new ByteArrayInputStream(bytes); gis = new GZIPInputStream(is, BUFFER_SIZE); int cache; final byte[] data = new byte[BUFFER_SIZE]; while ((cache = gis.read(data)) != -1) { sb.append(new String(data, 0, cache)); } } catch (IOException e) { return null; } finally { try { if (gis != null) gis.close(); if (is != null) is.close(); } catch (IOException e) { e.printStackTrace(); } } return sb.toString(); } }