Hello please suggest me the program to download zip file from url and extract with the proper directory structures in android. Actually i have written code for this but This program does not maintain the folder structure. It unzips all the files into a given destination directory. Please suggest.
public class AndroidQAActivity extends Activity {
EditText eText;
private static Random random = new Random(Calendar.getInstance().getTimeInMillis());
private ProgressDialog mProgressDialog;
String unzipLocation = Environment.getExternalStorageDirectory() + "/test.zip/";
String zipFile =Environment.getExternalStorageDirectory() + "/test.zip";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// setContentView(R.layout.main);
DownloadMapAsync mew = new DownloadMapAsync();
mew.execute("http://alphapluss.ecotechservices.com/Downloads/10228.zip");
}
class DownloadMapAsync extends AsyncTask<String, String, String> {
String result ="";
@Override
protected void onPreExecute() {
super.onPreExecute();
mProgressDialog = new ProgressDialog(AndroidQAActivity.this);
mProgressDialog.setMessage("Downloading Zip File..");
mProgressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
mProgressDialog.setCancelable(false);
mProgressDialog.show();
}
@Override
protected String doInBackground(String... aurl) {
int count;
try {
URL url = new URL(aurl[0]);
URLConnection conexion = url.openConnection();
conexion.connect();
int lenghtOfFile = conexion.getContentLength();
InputStream input = new BufferedInputStream(url.openStream());
OutputStream output = new FileOutputStream(zipFile);
byte data[] = new byte[1024];
long total = 0;
while ((count = input.read(data)) != -1) {
total += count;
publishProgress(""+(int)((total*100)/lenghtOfFile));
output.write(data, 0, count);
}
output.close();
input.close();
result = "true";
} catch (Exception e) {
result = "false";
}
return null;
}
protected void onProgressUpdate(String... progress) {
Log.d("ANDRO_ASYNC",progress[0]);
mProgressDialog.setProgress(Integer.parseInt(progress[0]));
}
@Override
protected void onPostExecute(String unused) {
mProgressDialog.dismiss();
if(result.equalsIgnoreCase("true")){
try {
unzip();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
else{
}
}
}
public void unzip() throws IOException {
mProgressDialog = new ProgressDialog(AndroidQAActivity.this);
mProgressDialog.setMessage("Please Wait...Extracting zip file ... ");
mProgressDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
mProgressDialog.setCancelable(false);
mProgressDialog.show();
new UnZipTask().execute(zipFile, unzipLocation);
}
private class UnZipTask extends AsyncTask<String, Void, Boolean> {
@SuppressWarnings("rawtypes")
@Override
protected Boolean doInBackground(String... params) {
String filePath = params[0];
String destinationPath = params[1];
File archive = new File(filePath);
try {
ZipFile zipfile = new ZipFile(archive);
for (Enumeration e = zipfile.entries(); e.hasMoreElements();) {
ZipEntry entry = (ZipEntry) e.nextElement();
unzipEntry(zipfile, entry, destinationPath);
}
UnzipUtil d = new UnzipUtil(zipFile, unzipLocation);
d.unzip();
} catch (Exception e) {
return false;
}
return true;
}
@Override
protected void onPostExecute(Boolean result) {
mProgressDialog.dismiss();
}
private void unzipEntry(ZipFile zipfile, ZipEntry entry,
String outputDir) throws IOException {
if (entry.isDirectory()) {
createDir(new File(outputDir, entry.getName()));
return;
}
File outputFile = new File(outputDir, entry.getName());
if (!outputFile.getParentFile().exists()) {
createDir(outputFile.getParentFile());
}
// Log.v("", "Extracting: " + entry);
BufferedInputStream inputStream = new BufferedInputStream(zipfile.getInputStream(entry));
BufferedOutputStream outputStream = new BufferedOutputStream(new FileOutputStream(outputFile));
try {
} finally {
outputStream.flush();
outputStream.close();
inputStream.close();
}
}
private void createDir(File dir) {
if (dir.exists()) {
return;
}
if (!dir.mkdirs()) {
throw new RuntimeException("Can not create dir " + dir);
}
}}
}
**And this is my UnzipUtil Class**
public class UnzipUtil {
private String _zipFile;
private String _location;
public UnzipUtil(String zipFile, String location) {
_zipFile = zipFile;
_location = location;
_dirChecker("");
}
public void unzip() {
try {
FileInputStream fin = new FileInputStream(_zipFile);
ZipInputStream zin = new ZipInputStream(fin);
ZipEntry ze = null;
while ((ze = zin.getNextEntry()) != null) {
Log.v("Decompress", "Unzipping " + ze.getName());
if(ze.isDirectory()) {
_dirChecker(ze.getName());
} else {
FileOutputStream fout = new FileOutputStream(_location + ze.getName());
// for (int c = zin.read(); c != -1; c = zin.read()) {
// fout.write(c);
byte[] buffer = new byte[8192];
int len;
while ((len = zin.read(buffer)) != -1) {
fout.write(buffer, 0, len);
}
fout.close();
// }
zin.closeEntry();
// fout.close();
}
}
zin.close();
} catch(Exception e) {
Log.e("Decompress", "unzip", e);
}
}
private void _dirChecker(String dir) {
File f = new File(_location + dir);
if(!f.isDirectory()) {
f.mkdirs();
}
}
}
