Develop Reference

How to programmatically zip a file in Android?

I know this question already exists, but I'm not sure how to implement it in my case...
First I created an DataOutuputStream that will write in a file with .uedl extension:
private static DataOutputStream os;
public static final String BASE_PATH = Environment.getExternalStorageDirectory().getAbsolutePath() + "/myApp/logs/"
public static void startReceiveLogs() {
if (debugBaudRate > -1) {
mReadFlag = true;
String time = TimeUtils.getCurrentTime(TimeZone.getDefault());
try {
os = new DataOutputStream(new FileOutputStream(BASE_PATH + time + "_logs.uedl"));
} catch (FileNotFoundException e) {
e.printStackTrace();
}
mReceiveLogsThread = new Thread(new ReceiveLogsThread());
mReceiveLogsThread.start();
}
}
Here is the writing stuff:
public void run() {
byte[] rbuf = new byte[64];
while (mReadFlag) {
try {
int len = mSerial.readLog(rbuf, mSerialPortLog);
if (len > 0) {
os.write(rbuf, 0, len);
}
} catch (NullPointerException e1) {
e1.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}
}
Once this thread stops running, I'd like to compress that file at the same path.

You try this it will help for you
public boolean zipFileAtPath(String sourcePath, String toLocation) {
final int BUFFER = 2048;
File sourceFile = new File(sourcePath);
try {
BufferedInputStream origin = null;
FileOutputStream dest = new FileOutputStream(toLocation);
ZipOutputStream out = new ZipOutputStream(new BufferedOutputStream(
dest));
if (sourceFile.isDirectory()) {
zipSubFolder(out, sourceFile, sourceFile.getParent().length());
} else {
byte data[] = new byte[BUFFER];
FileInputStream fi = new FileInputStream(sourcePath);
origin = new BufferedInputStream(fi, BUFFER);
ZipEntry entry = new ZipEntry(getLastPathComponent(sourcePath));
entry.setTime(sourceFile.lastModified()); // to keep modification time after unzipping
out.putNextEntry(entry);
int count;
while ((count = origin.read(data, 0, BUFFER)) != -1) {
out.write(data, 0, count);
}
}
out.close();
} catch (Exception e) {
e.printStackTrace();
return false;
}
return true;
}
private void zipSubFolder(ZipOutputStream out, File folder,
int basePathLength) throws IOException {
final int BUFFER = 2048;
File[] fileList = folder.listFiles();
BufferedInputStream origin = null;
for (File file : fileList) {
if (file.isDirectory()) {
zipSubFolder(out, file, basePathLength);
} else {
byte data[] = new byte[BUFFER];
String unmodifiedFilePath = file.getPath();
String relativePath = unmodifiedFilePath
.substring(basePathLength);
FileInputStream fi = new FileInputStream(unmodifiedFilePath);
origin = new BufferedInputStream(fi, BUFFER);
ZipEntry entry = new ZipEntry(relativePath);
entry.setTime(file.lastModified()); // to keep modification time after unzipping
out.putNextEntry(entry);
int count;
while ((count = origin.read(data, 0, BUFFER)) != -1) {
out.write(data, 0, count);
}
origin.close();
}
}
}
public String getLastPathComponent(String filePath) {
String[] segments = filePath.split("/");
if (segments.length == 0)
return "";
String lastPathComponent = segments[segments.length - 1];
return lastPathComponent;
}

Recieving File with Socket in Android

I want to transfer a file between server and client, Server is a Windows program written in Delphi with Indy and Client is an Android
this is my client code for reading from socket :
...
InputStream IS = S.getInputStream();
byte[] FBytes = new byte[FileSize];
FileOutputStream FOS = new FileOutputStream(TempFile);
BufferedOutputStream BOS = new BufferedOutputStream(FOS);
int BytesRead = IS.read(FBytes);
int CurrProgress = BytesRead;
do {
Log.d("DOWNLOAD", "BytesRead2 = " + Integer.toString(BytesRead));
if(CurrProgress < FBytes.length) {
Log.d("DOWNLOAD", "prog < BytesRead" );
BytesRead = IS.read(FBytes);
if (BytesRead > 0)
CurrProgress += BytesRead;
B.clear();
B.putInt("ProgValue", CurrProgress);
Msg.what = MSG_FILE_PROGRESS;
Hdlr.dispatchMessage(Msg);
Log.d("DOWNLOAD", "BytesRead = " + Integer.toString(BytesRead));
}
} while (BytesRead > 0);
Log.d(TAG, "Download Loop Finished");
File will download but the problem is size of downloaded file is lower than original file and the socket read command stay on last read. in other words file has been downloaded but CurrProgress is lower than FBytes.length so while loop execute onetime more and program hangs on read command because there is no more data sent from server
I have been tested server with an windows program and there is no problem in the server code
I have tested many ways like this but no chance :
int BytesRead = IS.read(FBytes, 0, FBytes.length);
int CurrProgress = BytesRead;
do {
Log.d("DOWNLOAD", "BytesRead2 = " + Integer.toString(BytesRead));
if(CurrProgress < FBytes.length) {
Log.d("DOWNLOAD", "prog < BytesRead" );
BytesRead = IS.read(FBytes, CurrProgress, (FBytes.length - CurrProgress));
...
FileSize value is correct and came from server as a string value before reading file bytes
What goes wrong ?!, thanks ...
Edit :
Complete code do many other jobs but code of reading file is like this :
public void Run()
{
Running = true;
try{
try{
InetAddress ServerAddr = InetAddress.getByName(SERVER_IP);
S = new Socket(ServerAddr, SERVER_PORT);
Log.d(TAG, "Connecting ...");
Out = new PrintWriter(new BufferedWriter(new OutputStreamWriter(S.getOutputStream())), true);
In = new BufferedReader(new InputStreamReader(S.getInputStream()));
switch (Job) {
...
}
case GetFile: {
this.SendMessage(Cmd);
response = In.readLine();
if(response.equals("1"))
{
Hdlr.sendEmptyMessage(MSG_SERVER_ACCEPT);
response = In.readLine();
int FileSize = Integer.parseInt(response);
if (context.getFilesDir().getFreeSpace() < 3 * FileSize)
{
Hdlr.sendEmptyMessage(MSG_ERROR_FREESPACE);
Log.d(TAG, "There is no Free Space !");
}
else {
final Message Msg = new Message();
final Bundle B = new Bundle();
B.putInt("FSize", FileSize);
Msg.what = MSG_FILE_SIZE;
Msg.setData(B);
Hdlr.dispatchMessage(Msg);
try {
File TempDir, TempFile, MainDir, MainFile;
switch(FileType)
{
case 2 :
TempDir = new File(context.getCacheDir(), "TempMP3");
if(!TempDir.exists()) {
TempDir.mkdir();
}
TempFile = new File(TempDir, Integer.toString(FileIndex) + ".mp3");
if(TempFile.exists()) {
TempFile.delete();
}
break;
default :
TempDir = new File(context.getCacheDir(), "TempLevel");
if(!TempDir.exists()) {
TempDir.mkdir();
}
TempFile = new File(TempDir, Integer.toString(FileIndex) + ".zip");
if(TempFile.exists()) {
TempFile.delete();
}
}
InputStream IS = S.getInputStream();
byte[] FBytes = new byte[4096];
FileOutputStream FOS = new FileOutputStream(TempFile);
BufferedOutputStream BOS = new BufferedOutputStream(FOS);
int BytesRead = 0;
int CurrProgress = 0;
do {
Log.d("DOWNLOAD", "prog < BytesRead" );
BytesRead = IS.read(FBytes, 0, FBytes.length);
BOS.write(FBytes, 0, BytesRead);
if (BytesRead > 0)
CurrProgress += BytesRead;
B.clear();
B.putInt("ProgValue", CurrProgress);
Msg.what = MSG_FILE_PROGRESS;
Hdlr.dispatchMessage(Msg);
Log.d("DOWNLOAD", "BytesRead = " + Integer.toString(BytesRead));
} while (CurrProgress < FileSize);
Log.d(TAG, "Download Loop Finished");
if (CurrProgress != FBytes.length) {
BOS.close();
Hdlr.sendEmptyMessage(MSG_ERROR_FILESIZE);
Log.d(TAG, "File Size Problem");
} else {
BOS.close();
Log.d(TAG, "File Downloaded successfully, Preparing to Unzip ... ");
try {
MainDir = new File(context.getFilesDir(), "Levels");
if(!MainDir.exists())
{
MainDir.mkdir();
}
File LevelDir = new File(MainDir, Integer.toString(FileIndex));
if(!LevelDir.exists())
{
LevelDir.mkdir();
}
else
{
LevelDir.delete();
}
FileInputStream fin = new FileInputStream(TempFile);
ZipInputStream zin = new ZipInputStream(fin);
ZipEntry ze = null;
while ((ze = zin.getNextEntry()) != null) {
MainFile = new File(LevelDir, ze.getName());
FileOutputStream FOut = new FileOutputStream(MainFile);
for (int c = zin.read(); c != -1; c = zin.read()) {
FOut.write(c);
}
zin.closeEntry();
FOut.close();
}
zin.close();
} catch (Exception e) {
Log.d(TAG, "Unzip Error : ", e);
}
}
} catch (Exception E) {
Err = 1;
Log.d(TAG, "Get File Error : ", E);
}
}
}
else
{
if (Listener != null)
{
Listener.callbackMessageReceiver(response);
Hdlr.sendEmptyMessage(MSG_ERROR_SERVER);
}
}
break;
}
...
}
}catch (Exception e)
{
Hdlr.sendEmptyMessage(MSG_ERROR_SEND);
Log.d(TAG, "Connect Error : ", e);
}
finally{
if(Out != null) {
Out.flush();
Out.close();
}
if(In != null)
{
In.close();
}
S.close();
Log.d(TAG, "Err Value is : " + Integer.toString(Err));
if(Err == 0)
{
Hdlr.sendEmptyMessage(MSG_SUCCESS);
}
Log.d(TAG, "Sending Ends");
}
}catch (Exception E){
Log.d(TAG, "Error : ", E);
}
}
CurrProgress is lower than FileSize ( the difference is about 4 or 5 KB ) and the while loop hangs on read command !

Problem solved, I will post it as answer, it may be useful
The problem was that server sends File immediately after sending FileSize and I think the BufferedReader gets some bytes of File so the size of bytes given by IS are lower than FileSize, example of Server :
...
WriteLn(FileSize);
Write(FileStream);
...
Now, Server first sends FileSize then wait for a response from client, after checking freespace in client it sends a Ready response to server and then Server sends the File Stream, for example :
...
WriteLn(FileSize);
Response := ReadLn();
if Response = "READY" then
Write(FileStream);
...
and codes in client are like this :
...
BufferedInputStream BIS = new BufferedInputStream(S.getInputStream());
In = new BufferedReader(new InputStreamReader(S.getInputStream()));
...
response = In.readLine();
int FileSize = Integer.parseInt(response);
if (context.getFilesDir().getFreeSpace() < 3 * FileSize)
{
Hdlr.sendEmptyMessage(MSG_ERROR_FREESPACE);
Log.d(TAG, "There is no Free Space !");
this.SendMessage("NOT_READY");
}
else {
...
try {
this.SendMessage("READY");
byte[] FBytes = new byte[8192];
FileOutputStream FOS = new FileOutputStream(TempFile);
BufferedOutputStream BOS = new BufferedOutputStream(FOS);
int BytesRead = 0;
int CurrProgress = 0;
while (CurrProgress < FileSize){
Log.d("DOWNLOAD", "Available : " + Integer.toString(BIS.availabl
BytesRead = BIS.read(FBytes, 0, FBytes.length);
BOS.write(FBytes, 0, BytesRead);
if (BytesRead > 0)
CurrProgress += BytesRead;
B.clear();
B.putInt("ProgValue", CurrProgress);
Msg.what = MSG_FILE_PROGRESS;
Hdlr.dispatchMessage(Msg);
Log.d("DOWNLOAD", "BytesRead = " + Integer.toString(BytesRead));
}
There is no problem and everything works fine

android progress bar

hi am trying to add a progress bar to my activity, no clue how to do that. here is the scenario :
my activity MESSAGING calls IMSERVICE.SENDFILE(), i pass the context from MESSAGING as argument to IMSERVICE.SENDFILE(). IMSERVICE.SENDFILE() calls SOCKETOPERATOR.SENDFILE(). i pass the same context to that too. SOCKETOPERATOR.SENDFILE() has a method that sends file and that looks like this :
public boolean sendFile(Context c,String path,String ip, int port) {
// TODO Auto-generated method stub
try {
String[] str = ip.split("\\.");
byte[] IP = new byte[str.length];
for (int i = 0; i < str.length; i++) {
IP[i] = (byte) Integer.parseInt(str[i]);
}
Socket socket = getSocket(InetAddress.getByAddress(IP), port);
if (socket == null) {
Log.i("SO sendFILE","");
return false;
}
Log.i("SocketOP", "sendFILE-1");
File f = new File(path);
String filename=path.substring(path.lastIndexOf("/")+1);
System.out.println("filename:"+filename);
fin.filename = "~"+filename;
BufferedOutputStream out = new BufferedOutputStream( socket.getOutputStream() );
FileInputStream fileIn = new FileInputStream(f);
Log.i("SocketOP", "sendFILE-2");
byte [] buffer = new byte [(int)f.length()];
System.out.println("SO sendFile f.length();" + f.length());
int bytesRead =0;
ProgressDialog pbarDialog = new ProgressDialog(c);
pbarDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
pbarDialog.setMessage("Loading...");
pbarDialog.setCancelable(false);
pbarDialog .setProgress(0);
pbarDialog.show();
while ((bytesRead = fileIn.read(buffer)) > 0) {
out.write(buffer, 0, buffer.length);
//get the previous value of progress bar
int old_value = pbarDialog .getProgress();
//calculate how much did you read from the file
int new_read =(int)( ((float) f.length() / bytesRead)*100);
//add the new read to the old_value
int value = new_read+old_value;
pbarDialog.setProgress(value);
Log.i("SocketOP", "sendFILE-3");
System.out.println("SO sendFile" + bytesRead +filename);
}
pbarDialog.dismiss();
out.flush();
out.close();
fileIn.close();
} catch (IOException e) {
return false;
//e.printStackTrace();
}
// Toast.makeText(this, "Lvbvhhging...", Toast.LENGTH_SHORT).show();
return true;
}
now as you can see i have a progressbar in it. i dont know how to make it show from my MESSAGING activity. also, im not sure if i have used the progressDilog correctly. could anyone help please?

You should do the processing in a background thread, while calling the progress dialog and other UI related stuff in the UI thread. Thats what AsyncTask was designed to do, read about it here:
http://developer.android.com/reference/android/os/AsyncTask.html

android progressbar at sending file

hi im working on an android messenger and i need to show the progress bar when sending and receiving files. could anyone help? for instance this is how i send the file,
#Override
public boolean sendFile(String path,String ip, int port) {
// TODO Auto-generated method stub
try {
String[] str = ip.split("\\.");
byte[] IP = new byte[str.length];
for (int i = 0; i < str.length; i++) {
IP[i] = (byte) Integer.parseInt(str[i]);
}
Socket socket = getSocket(InetAddress.getByAddress(IP), port);
if (socket == null) {
Log.i("SO sendFILE","null");
return false;
}
Log.i("SocketOP", "sendFILE-1");
File f = new File(path);
BufferedOutputStream out = new BufferedOutputStream( socket.getOutputStream() );
FileInputStream fileIn = new FileInputStream(f);
Log.i("SocketOP", "sendFILE-2");
byte [] buffer = new byte [(int)f.length()];
System.out.println("SO sendFile f.length();" + f.length());
int bytesRead =0;
while ((bytesRead = fileIn.read(buffer)) > 0) {
out.write(buffer, 0, buffer.length);
System.out.println("SO sendFile" + bytesRead);
}
out.flush();
out.close();
fileIn.close();
Log.i("SocketOP", "sendFILE-3");
} catch (IOException e) {
return false;
//e.printStackTrace();
}
// Toast.makeText(this, "Lvbvhhging...", Toast.LENGTH_SHORT).show();
return true;
}
}
now where do i put the bar and how do i do that inorder to show the user the progress?

try this ::
private class xyz extends AsyncTask<Void, Void, Void> {
private final ProgressDialog dialog = new ProgressDialog(tranning.this);
#Override
protected void onPreExecute() {
this.dialog.setMessage("Please Wait...");
this.dialog.show();
// put your code which preload with processDialog
}
#Override
protected Void doInBackground(Void... arg0) {
// put your code here
Log.i("SocketOP", "sendFILE-1");
File f = new File(path);
BufferedOutputStream out = new BufferedOutputStream( socket.getOutputStream() );
FileInputStream fileIn = new FileInputStream(f);
Log.i("SocketOP", "sendFILE-2");
byte [] buffer = new byte [(int)f.length()];
System.out.println("SO sendFile f.length();" + f.length());
int bytesRead =0;
while ((bytesRead = fileIn.read(buffer)) > 0) {
out.write(buffer, 0, buffer.length);
System.out.println("SO sendFile" + bytesRead);
}
out.flush();
out.close();
fileIn.close();
return null;
}
#Override
protected void onPostExecute(final Void unused) {
if (this.dialog.isShowing()) {
this.dialog.dismiss();
}
}
}
and use this in main ::
new xyz().execute();

Do your file sending task in separate thread not in the UI thread. When you start this thread call your progress dialog and remvove it from thread when you are done using Handler.
For Handler you can refer this doc:
http://developer.android.com/reference/android/os/Handler.html

myProgressBar.setProgress(0);
while ((bytesRead = fileIn.read(buffer)) > 0) {
out.write(buffer, 0, buffer.length);
//get the previous value of progress bar
int old_value = myProgressBar.getProgress();
//calculate how much did you read from the file
int new_read =(int)( ((float) f.length() / bytesRead) )*100 ) ;
//add the new read to the old_value
int value = new_read+old_value;
myProgressBar.setProgress(value);
System.out.println("SO sendFile" + bytesRead);
}
see this link for how to construct a ProgressBar in android

FILE TRANSFER in android

this is regarding android instant messenger. im trying to send a file, and this is how i send it :
#Override
public boolean sendFile(String path,String ip, int port) {
// TODO Auto-generated method stub
try {
String[] str = ip.split("\\.");
byte[] IP = new byte[str.length];
for (int i = 0; i < str.length; i++) {
IP[i] = (byte) Integer.parseInt(str[i]);
}
Socket socket = getSocket(InetAddress.getByAddress(IP), port);
if (socket == null) {
Log.i("SO sendFILE","null");
return false;
}
Log.i("SocketOP", "sendFILE-1");
File f = new File(path);
BufferedOutputStream out = new BufferedOutputStream( socket.getOutputStream() );
FileInputStream fileIn = new FileInputStream(f);
Log.i("SocketOP", "sendFILE-2");
byte [] buffer = new byte [1024];
int bytesRead =0;
while ((bytesRead = fileIn.read(buffer)) > 0) {
out.write(buffer, 0, bytesRead);
System.out.println("SO sendFile" + bytesRead);
}
out.flush();
out.close();
fileIn.close();
Log.i("SocketOP", "sendFILE-3");
} catch (IOException e) {
return false;
//e.printStackTrace();
}
// Toast.makeText(this, "Lvbvhhging...", Toast.LENGTH_SHORT).show();
return true;
}
this is how i receive connection and seperate text from file (i concatenate "text" to the output stream for the text)
public ReceiveConnection(Socket socket)
{
this.clientSocket = socket;
this.fileSocket=socket;
SocketOperator.this.sockets.put(socket.getInetAddress(), socket);
}
#Override
public void run() {
try {
// PrintWriter out = new PrintWriter(clientSocket.getOutputStream(), true);
// PrintWriter out = new PrintWriter(clientSocket.getOutputStream(), true);
BufferedReader in = new BufferedReader(
new InputStreamReader(
clientSocket.getInputStream()));
InputStream is=clientSocket.getInputStream();
String inputLine;
while ((inputLine = in.readLine()) != null) {
if (inputLine.contains("Text") == true)
{
appManager.messageReceived(inputLine);
Log.i("SocketOP","text");}
else if
(inputLine.contains("Text") == false)
{
Log.i("SocketOP","filee");
appManager.fileReceived(is);
}
else{
clientSocket.shutdownInput();
clientSocket.shutdownOutput();
clientSocket.close();
fileSocket.shutdownInput();
fileSocket.shutdownOutput();
fileSocket.close();
SocketOperator.this.sockets.remove(clientSocket.getInetAddress());
SocketOperator.this.sockets.remove(fileSocket.getInetAddress());
Log.i("SocketOP", "CLOSING CONNECTION");
}
}
} catch (IOException e) {
Log.e("ReceiveConnection.run: when receiving connection ","");
}
}
}
and this is how i finally receive the file in a service called imService :
public void fileReceived(InputStream is)
throws FileNotFoundException, IOException {
Log.i("IMSERVICE", "FILERECCC-1");
if (is!= null) {
FileOutputStream fos = null;
BufferedOutputStream bos = null;
try {
fos = new FileOutputStream("/sdcard/chats/ffffff.txt");
bos = new BufferedOutputStream(fos);
byte[] aByte = new byte[1024];
int bytesRead = 0;
System.out.println("imService fileReceive" + bytesRead);
while ((bytesRead = is.read(aByte)) != -1) {
bos.write(aByte, 0, bytesRead);
System.out.println("imService fileReceive" + bytesRead);
}
bos.flush();
bos.close();
Log.i("IMSERVICE", "FILERECCC-2");
} catch (IOException ex) {
// Do exception handling
}
}
right where i receive the file connection and forward the inputstream IS to the file receive method, i see that its getting the bytes but once filereceived is called it isnt receving any bytes.
it uses tcp/ip.

ok, try it on your method
public void fileReceived(InputStream is)
throws FileNotFoundException, IOException
{
string result;
FileOutputStream fos = null;
fos = new FileOutputStream("/sdcard/chats/ffffff.txt");
Log.i("IMSERVICE", "FILERECCC-1");
if (is!= null)
{
// result = convertStreamToString(is);
// result = result.replace("\n", "");
// Log.e("InputStream output",result);
//IOUtils.copy(is,fos);
byte[] buffer = new byte[1024];
int length;
while ((length = is.read(buffer)) > 0)
{
fos.write(buffer, 0, length);
}
// Close the streams
fos.flush();
fos.close();
is.close();
}
}
/* public static String convertStreamToString(InputStream is)
throws Exception
{
BufferedReader reader = new BufferedReader(new InputStreamReader(is, "UTF-8"));
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null)
{
sb.append(line + "\n");
}
is.close();
return sb.toString();
}
*/
EDIT: make other stuff in fileReceived method as comment.. just paste my suggested code.
EDIT: its a IOUtils from apache use it..