Android 3.x+ Java ZipFile Class - Can't read ZipEntries from big files
This is a known issue with the android ZipFile implementation:
http://code.google.com/p/android/issues/detail?id=23207
Basically zip files only support up to 65k entries. There is an extended version of the zip file format called Zip64, which supports a larger number of entries. Unfortunately ZipFile on android cannot read Zip64. You will probably find that the C64Music.zip file is in the Zip64 format
A work around is to use the Apache Commons Compress library instead of the native implementation. Their version of ZipFile supports Zip64: http://commons.apache.org/compress/apidocs/org/apache/commons/compress/archivers/zip/ZipFile.html
public class Compress { private static final int BUFFER = 2048; private String[] _files; private String _zipFile; public Compress(String[] files, String zipFile) { _files = files; _zipFile = zipFile; } public void zip() { try { BufferedInputStream origin = null; FileOutputStream dest = new FileOutputStream(_zipFile); ZipOutputStream out = new ZipOutputStream(new BufferedOutputStream(dest)); byte data[] = new byte[BUFFER]; for(int i=0; i < _files.length; i++) { Log.v("Compress", "Adding: " + _files[i]); FileInputStream fi = new FileInputStream(_files[i]); origin = new BufferedInputStream(fi, BUFFER); ZipEntry entry = new ZipEntry(_files[i].substring(_files[i].lastIndexOf("/") + 1)); out.putNextEntry(entry); int count; while ((count = origin.read(data, 0, BUFFER)) != -1) { out.write(data, 0, count); } origin.close(); } out.close(); } catch(Exception e) { e.printStackTrace(); } } }Call Compress like given below where you want to zip a file :----String zipFilePath = "fileName.zip";File zipFile = new File(zipFilePath);String[] files = new String[] {"/sdcard/fileName"};if(!zipFile.exists()){ new Compress(files, zipFilePath).zip(); }