Android Utililty Methods InputStream Unzip

List of utility methods to do InputStream Unzip

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Description

The list of methods to do InputStream Unzip are organized into topic(s).

Method

voidunZip(InputStream in, String destDir)
un Zip 
final int BUFFER = 1024;
byte data[] = new byte[BUFFER];
ZipInputStream zis = null;
try {
    zis = new ZipInputStream(in);
    ZipEntry entry;
    while ((entry = zis.getNextEntry()) != null) {
        if (entry.isDirectory()) {
...
booleanunZip(InputStream is, String filename, String folderPath)
un Zip 
File file = null;
FileOutputStream fos = null;
try {
    file = new File(filename);
    if (!file.exists()) {
        file.createNewFile();
    fos = new FileOutputStream(file);
...
booleanunpackZip(InputStream zipStream, String unpackPath)
Unzip the specified file from a file Be sure to set : Modified from: Source: http://stackoverflow.com/questions/3382996/how-to-unzip-files-programmatically-in-android 
InputStream is;
ZipInputStream zis;
try {
    String filename;
    zis = new ZipInputStream(new BufferedInputStream(zipStream));
    ZipEntry ze;
    byte[] buffer = new byte[1024];
    int count;
...
booleanunzip(InputStream fileIn, File dirOut)
This is not tested on hierarchical zip files, currently only used on flat archives 
try {
    ZipInputStream zin = new ZipInputStream(fileIn);
    ZipEntry ze = null;
    while ((ze = zin.getNextEntry()) != null) {
        Log.v("Decompress", "Unzipping " + ze.getName());
        if (ze.isDirectory()) {
            throw new UnsupportedOperationException(
                    "currently only flat archives are supported");
...
voiddecompress(InputStream is, OutputStream os)
decompress 
GZIPInputStream gis = null;
try {
    gis = new GZIPInputStream(is);
    int count;
    byte data[] = new byte[BUFFER];
    while ((count = gis.read(data, 0, BUFFER)) != -1) {
        os.write(data, 0, count);
} catch (IOException e) {
    System.out.println(e.getMessage());
} finally {
    if (gis != null) {
        try {
            gis.close();
        } catch (IOException e) {
voiddecompress(InputStream is, OutputStream os)
decompress 
GZIPInputStream gis = null;
try {
    gis = new GZIPInputStream(is);
    int count;
    byte data[] = new byte[BUFFER];
    while ((count = gis.read(data, 0, BUFFER)) != -1) {
        os.write(data, 0, count);
} catch (IOException e) {
    System.out.println(e.getMessage());
} finally {
    if (gis != null) {
        try {
            gis.close();
        } catch (IOException e) {
voiddecompress(InputStream is, OutputStream os)
decompress 
GZIPInputStream gin = new GZIPInputStream(is);
int count;
byte data[] = new byte[BUFFERSIZE];
while ((count = gin.read(data, 0, BUFFERSIZE)) != -1) {
    os.write(data, 0, count);
gin.close();
Stringuncompress(InputStream inputStream)
uncompress 
if (inputStream == null) {
    return null;
ByteArrayOutputStream out = new ByteArrayOutputStream();
GZIPInputStream gunzip = new GZIPInputStream(inputStream);
byte[] buffer = new byte[256];
int n;
while ((n = gunzip.read(buffer)) >= 0) {
...
booleanunpackZip(Context context, String s, InputStream is)
Unpack the given InputStream, representing ZIP file, to app cache dir 
ZipInputStream zis;
try {
    String filename;
    File cache = context.getCacheDir();
    File dir = new File(cache.getAbsolutePath() + "/" + s);
    dir.mkdir();
    zis = new ZipInputStream(new BufferedInputStream(is));
    ZipEntry ze;
...
InputStreamreadEntryAsWhatEverInternal( final ZipEntry entry, final InputStream unzippedInputStream)
read Entry As What Ever Internal 
InputStream is = null;
ZipInputStream zipIs = null;
zipIs = new ZipInputStream(unzippedInputStream);
ZipEntry ze;
while ((ze = zipIs.getNextEntry()) != null) {
    if (ze.getName().equals(entry.getName())) {
        is = zipIs;
        break;
...