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It saves empty when saving apk file to device

I set up HttpServer in Java. When the apk file is sent by the client, I want to save it to the device. However, when using the code below, it saves to the device in a empty way.
(0 bytes when I say empty) Where am I doing wrong?
Note:
In the log in the code, I tested that the apk file was sent properly by the client. Values ​​such as size, byte, apk name are coming in properly.
class postApkFile implements HttpHandler {
#RequiresApi(api = Build.VERSION_CODES.O)
#Override
public void handle(HttpExchange he) throws IOException {
he.getResponseHeaders().add("Access-Control-Allow-Origin", "*");
if (he.getRequestMethod().equalsIgnoreCase("OPTIONS")) {
he.getResponseHeaders().add("Access-Control-Allow-Methods", "GET, OPTIONS");
he.getResponseHeaders().add("Access-Control-Allow-Headers", "Content-Type,Authorization");
he.sendResponseHeaders(204, -1);
return;
}
DiskFileItemFactory d = new DiskFileItemFactory();
try {
ServletFileUpload up = new ServletFileUpload(d);
List<FileItem> result = up.parseRequest(new RequestContext() {
#Override
public String getCharacterEncoding() {
return "UTF-8";
}
#Override
public int getContentLength() {
return 0; //tested to work with 0 as return
}
#Override
public String getContentType() {
return he.getRequestHeaders().getFirst("Content-type");
}
#Override
public InputStream getInputStream() throws IOException {
return he.getRequestBody();
}
});
InputStream inputStream = he.getRequestBody();
String configXmlFilePath = Environment.getExternalStorageDirectory() + "test/configXml/test.apk";
File apkFile = new File(configXmlFilePath);
FileOutputStream outputStream = new FileOutputStream(apkFile);
he.getResponseHeaders().add("Content-type", "text/plain");
he.sendResponseHeaders(200, 0);
OutputStream os = he.getResponseBody();
byte[] buffer = new byte[1024];
Log.i(HttpServerManager.getHttpServerManager().TAG, "buffer1");
int bytesRead;
Log.i(HttpServerManager.getHttpServerManager().TAG, "bufferread");
while ((bytesRead = inputStream.read(buffer)) != -1) {
outputStream.write(buffer, 0, bytesRead);
}
inputStream.close();
outputStream.close();
for (FileItem fi : result) {
os.write(fi.getName().getBytes());
os.write("\r\n".getBytes());
Log.i(HttpServerManager.getHttpServerManager().TAG, "File-Item: " + fi.getFieldName() + " = " + fi.getName() + " get size " + fi.getSize() );
}
os.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}

Writing the while block after the for loop solved my problem.
class postApkFile implements HttpHandler {
#RequiresApi(api = Build.VERSION_CODES.O)
#Override
public void handle(HttpExchange he) throws IOException {
he.getResponseHeaders().add("Access-Control-Allow-Origin", "*");
if (he.getRequestMethod().equalsIgnoreCase("OPTIONS")) {
he.getResponseHeaders().add("Access-Control-Allow-Methods", "GET, OPTIONS");
he.getResponseHeaders().add("Access-Control-Allow-Headers", "Content-Type,Authorization");
he.sendResponseHeaders(204, -1);
return;
}
DiskFileItemFactory d = new DiskFileItemFactory();
try {
ServletFileUpload up = new ServletFileUpload(d);
List<FileItem> result = up.parseRequest(new RequestContext() {
#Override
public String getCharacterEncoding() {
return "UTF-8";
}
#Override
public int getContentLength() {
return 0; //tested to work with 0 as return
}
#Override
public String getContentType() {
return he.getRequestHeaders().getFirst("Content-type");
}
#Override
public InputStream getInputStream() throws IOException {
return he.getRequestBody();
}
});
String configXmlFilePath = Environment.getExternalStorageDirectory() + "test/configXml/test.apk";
File apkFile = new File(configXmlFilePath);
he.getResponseHeaders().add("Content-type", "text/plain");
he.sendResponseHeaders(200, 0);
OutputStream os = he.getResponseBody();
InputStream inputStream = null;
for (FileItem fi : result) {
os.write(fi.getName().getBytes());
os.write("\r\n".getBytes());
inputStream = fi.getInputStream();
Log.i(HttpServerManager.getHttpServerManager().TAG, "File-Item: " + fi.getFieldName() + " = " + fi.getName());
}
FileOutputStream outputStream = new FileOutputStream(apkFile);
byte[] buffer = new byte[1024];
int bytesRead;
while ((bytesRead = inputStream.read(buffer)) != -1) {
outputStream.write(buffer, 0, bytesRead);
}
Log.i(HttpServerManager.getHttpServerManager().TAG, "os.Close ve outputStream.close");
os.close();
inputStream.close();
outputStream.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}

Trouble downloading photos

I wrote a program that
Download the photo from the url...
But I have a problem...
Some photos are downloaded.
And there is no problem.
But some of the pictures are not downloadable incompletely :(
and in the file manager I look at
it is broken
Can you help?
my code is:
public class DownloadFileFromURL_img extends AsyncTask {
private viewHolderPost holderPOST;
public DownloadFileFromURL_img(viewHolderPost holderPOST) {
Log.d(TAG, "DownloadFileFromURL_img: ");
this.holderPOST = holderPOST;
}
#Override
protected void onPreExecute() {
super.onPreExecute();
}
/**
* Downloading file in background thread
*/
#Override
protected String doInBackground(String... f_url) {
int count;
try {
File file = new File(Environment.getExternalStorageDirectory(), "98Diha/img");
if (!file.exists()) {
if (!file.mkdirs()) {
file.createNewFile();
}
}
InputStream input = null;
int response = -1;
URL url = new URL(f_url[0]);
URLConnection conection = url.openConnection();
if (!(conection instanceof HttpURLConnection))
throw new IOException("Not an HTTP connection");
try{
HttpURLConnection httpConn = (HttpURLConnection) conection;
httpConn.setAllowUserInteraction(false);
httpConn.setInstanceFollowRedirects(true);
httpConn.setRequestMethod("GET");
httpConn.connect();
response = httpConn.getResponseCode();
if (response == HttpURLConnection.HTTP_OK) {
input = httpConn.getInputStream();
}
}
catch (Exception ex)
{
throw new IOException("Error connecting");
}
int lenghtOfFile = conection.getContentLength();
input = new BufferedInputStream(url.openStream());
String imgS[] = f_url[0].split("/");
String name = imgS[imgS.length - 1];
String path = Environment
.getExternalStorageDirectory().toString()
+ "/98diha/img/" + name;
File filePath = new File(path);
if (!filePath.exists()) {
OutputStream output = new FileOutputStream(path);
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.flush();
output.close();
input.close();
} else {
SSToast(context, "Exist!");
holderPOST.dowload_img.setVisibility(View.GONE);
holderPOST.setWallpaper.setVisibility(View.VISIBLE);
holderPOST.setWallpaper.setText(context.getString(R.string.set_wp));
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
holderPOST.setWallpaper.setTextColor(ContextCompat.getColor(context, R.color.Teal_400));
} else {
holderPOST.setWallpaper.setTextColor(context.getResources().getColor(R.color.Teal_400));
}
}
} catch (Exception e) {
Log.e("Error: ", e.getMessage());
}
return null;
}
/**
* Updating progress bar
*/
protected void onProgressUpdate(String... progress) {
holderPOST.dowload_img.setVisibility(View.GONE);
holderPOST.setWallpaper.setVisibility(View.VISIBLE);
holderPOST.setWallpaper.setText(context.getString(R.string.dowloading));
}
/**
* After completing background task Dismiss the progress dialog
**/
#Override
protected void onPostExecute(String file_url) {
holderPOST.setWallpaper.setText(context.getString(R.string.set_wp));
holderPOST.setWallpaper.setTextColor(context.getResources().getColor(R.color.Teal_400));
Log.d(TAG, "onPostExecute: ");
}
}

Instead of using AsyncTask to download images from URL. You can use libraries such as Glide or Picasso to do it quickly just in one line. But if you don't want to use libraries than you could use DownloadManager to download it and save it in a file. You can check this tutorial or other tutorials on the web for the implementation of DownloadManager.

Android how to download zip file using soap liabrary

I want to download zip file from server by using ksoap liabry.I am getting data in base64 please give solution that how to convert base64 and save it as zip file

byte[] bytes;
byte[] data = result.getBytes("UTF-8");
File outputFile = new File(mediaStorageDir.getAbsolutePath(), + "filename.zip");
new FileOutputStream(outputFile);
bytes = Base64.decode(data, Base64.DEFAULT);
File filepath = new File(Environment.getExternalStorageDirectory(), "Folder/" + "filename.zip");
OutputStream pdffos = new FileOutputStream(filepath);
pdffos.write(bytes);
pdffos.flush();
pdffos.close();

This Code help me to downlad apk and store to sd card.
This may help you also..
public class SaveInBackground extends AsyncTask<String,Integer,String> {
View v;
OutputValue ov;
Boolean isError= false;
public SaveInBackground(View v,OutputValue ov){
this.v = v;
this.ov = ov;
}
#Override
protected void onPreExecute(){
Message.setText("Downloading...");
isToLoop =true;
new Thread(new Runnable() {
#Override
public void run() {
while (isToLoop) {
SystemClock.sleep(500);
runOnUiThread(new Runnable() {
#Override
public void run() {
int count = bar.getProgress() + 1;
bar.setProgress(count);
}
});
if(isToLoop)
break;
}
}
}).start();
}
#Override
protected void onProgressUpdate(Integer... values) {
bar.setProgress(values[0]);
}
#Override
protected String doInBackground(String... params) {InputStream input = null;
OutputStream output = null;
HttpURLConnection connection = null;
try {
URL url = new URL(Globle.Infosoft_serverLink.replace("/Service.asmx/","")+ov.url);
connection = (HttpURLConnection) url.openConnection();
connection.connect();
if (connection.getResponseCode() != HttpURLConnection.HTTP_OK) {
isError = true;
return "Server returned HTTP " + connection.getResponseCode()
+ " " + connection.getResponseMessage();
}
int fileLength = connection.getContentLength();
input = connection.getInputStream();
//publishProgress(80);
String path = Environment.getExternalStorageDirectory()+"/"+ov.Name+".apk";
output = new FileOutputStream(path );
byte data[] = new byte[4096];
long total = 0;
int count;
while ((count = input.read(data)) != -1) {
total += count;
if (fileLength > 0) // only if total length is known
publishProgress((int) (total * 100 / fileLength));
output.write(data, 0, count);
}
return path;
}
catch (Exception e) {
isError =true;
Snackbar.make(v,"Error while accessing storage.",Snackbar.LENGTH_LONG).show();
return null;
}finally {
try {
if (output != null)
output.close();
if (input != null)
input.close();
} catch (IOException ignored) {
}
if (connection != null)
connection.disconnect();
}
}
#Override
protected void onPostExecute(String result){
if(!isError) {
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(Uri.fromFile(new File(result)), "application/vnd.android.package-archive");
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
}
Message.setText("Downloaded");
reset(v);
}
}

How to Update My Android app From My Server?

Please help me to add update code to my app to be update from my server thank you
nothing worked from net , i need complete guide

You can't install your app without users permission and root access but you can download your applications new version from server then ask users for install. Here is an example:
{
PackageManager manager = context.getPackageManager();
try {
PackageInfo info = manager.getPackageInfo(context.getPackageName(), 0);
version = info.versionName;
if (newversion.replace(".", "") < version.replace(".", "")) {
new DownloadFileFromURL().execute("http://exampl.com/Content/files/example.apk");
}
} catch (PackageManager.NameNotFoundException e) {
e.printStackTrace();
}
}
private class DownloadFileFromURL extends AsyncTask<String, String, String> {
#Override
protected void onPreExecute() {
super.onPreExecute();
dialog = onCreateDialog();
}
#Override
protected String doInBackground(String... f_url) {
int count;
try {
File file = new File(Environment.getExternalStorageDirectory() + "/example.apk");
if (file.exists()) {
file.delete();
}
URL url = new URL(f_url[0]);
URLConnection conection = url.openConnection();
conection.connect();
int lenghtOfFile = conection.getContentLength();
pDialog.setMax(lenghtOfFile / 1024);
InputStream input = new BufferedInputStream(url.openStream(), 8192);
OutputStream output = new FileOutputStream(Environment.getExternalStorageDirectory() + "/example.apk");
byte data[] = new byte[1024];
long total = 0;
while ((count = input.read(data)) != -1) {
total += count;
publishProgress(total / 1024 + "");
output.write(data, 0, count);
}
output.flush();
output.close();
input.close();
} catch (Exception ignored) {
}
return null;
}
protected void onProgressUpdate(String... progress) {
pDialog.setProgress(Integer.parseInt(progress[0]));
}
#Override
protected void onPostExecute(String file_url) {
dialog.dismiss();
File file = new File(Environment.getExternalStorageDirectory() + "/example.apk");
if (file.exists()) {
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(Uri.fromFile(file), "application/vnd.android.package-archive");
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(intent);
} else {
//finish() or whatever you want
}
}
}

For loop does not doing my async task completely

Im doing Download All of files. What I did was for loop, unfortunately my for loop does not finish my async task it continues doing all the loop regardless if it finished the first file that was downloading. Help please.
Here is my for loop
for (int i = 0; i < id.length; i++) {
Element e = (Element)nodes.item(i);
id[i] = ""+CategoriesXMLfunctions.getValue(e, "id");
name[i] = ""+CategoriesXMLfunctions.getValue(e, "name");
image[i] = ""+CategoriesXMLfunctions.getValue(e, "image");
simage[i] = ""+CategoriesXMLfunctions.getValue(e, "simage");
download[i] = ""+CategoriesXMLfunctions.getValue(e, "download");
author[i] = ""+CategoriesXMLfunctions.getValue(e, "author");
genre[i] = ""+CategoriesXMLfunctions.getValue(e, "genre");
size[i] = ""+CategoriesXMLfunctions.getValue(e, "size");
price[i] = ""+CategoriesXMLfunctions.getValue(e, "price");
mylist.add(map);
id_all = id[i];
image_all = image[i];
dload_all = download[i];
size_all = size[i];
name_all = name[i];
String response = null;
String resstring = null;
ArrayList<NameValuePair> postParameters = new ArrayList<NameValuePair>();
postParameters.add(new BasicNameValuePair("devid", "devid"));
String devid=null;
try {
devid = URLEncoder.encode(Global.getMac(), "UTF-8");
} catch (UnsupportedEncodingException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
try {
String nURL = "http://....url";
response = CustomHttpClient.executeHttpPost(nURL, postParameters);
resstring=response.toString();
String credit = resstring;
String priiice = price[i];
float money = Float.parseFloat(credit);
float pri = Float.parseFloat(priiice);
if(pri>money){
final AlertDialog.Builder alert = new AlertDialog.Builder(MainStore.this);
alert.setMessage("Credits not enough.");
alert.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
dialog.cancel();
}
});
alert.show();
}else{
File sd = getDir("xml",MODE_PRIVATE);
File todel = new File(sd,id[i]+".xml");
todel.delete();
String filecreat= "/"+id[i]+".xml";
File newfil = new File(sd+ filecreat);
if(newfil.exists()){
todel.delete();
}
try{
if(!newfil.exists()){
newfil.createNewFile();
}}catch(IOException e1){
}
try{
FileWriter fileWritter = new FileWriter(newfil);
BufferedWriter bufferWritter = new BufferedWriter(fileWritter);
bufferWritter.write("<xml>");
bufferWritter.write("<books>");
bufferWritter.write("<id>"+id[i]+"</id>");
bufferWritter.write("<name>"+name[i]+"</name>");
bufferWritter.write("<download>"+download[i]+"</download>");
bufferWritter.write("<size>"+size[i]+"</size>");
bufferWritter.write("<author>"+author[i]+"</author>");
bufferWritter.write("<genre>"+genre[i]+"</genre>");
bufferWritter.write("<new>0</new>");
bufferWritter.write("</books>");
bufferWritter.write("</xml>");
bufferWritter.close();
Toast.makeText(getApplicationContext(), "Downloading...", Toast.LENGTH_LONG).show();
}catch(IOException e1){
e1.printStackTrace();
Toast.makeText(getApplicationContext(), "error wrting xml "+e1.toString(), Toast.LENGTH_LONG).show();
}
downloadallStarted();
downloadallfiles();
//checkdownloadall();
//downloadallFinished();
}
}catch (Exception e1){
Toast.makeText(getApplicationContext(), "Error in downloadall: " +e1.toString(), Toast.LENGTH_LONG).show();
}
}
And here is my async task
private void startDownloadall() {
String fileURL = dload_all;
fileURL = fileURL.replace(" ", "%20");
new DownloadFileAsync1().execute(fileURL);
Toast.makeText(getApplicationContext(), "Downloading...start all", Toast.LENGTH_LONG).show();
}
class DownloadFileAsync1 extends AsyncTask<String, String, String> {
#Override
protected void onPreExecute() {
super.onPreExecute();
//showDialog(DIALOG_DOWNLOAD_PROGRESS);
}
#Override
protected String doInBackground(String... aurl) {
try {
String fileURL = dload_all;
fileURL = fileURL.replace(" ", "%20");
URL u = new URL(fileURL);
HttpURLConnection c = (HttpURLConnection) u.openConnection();
c.setRequestMethod("GET");
c.setDoOutput(true);
c.connect();
String PATH = getDir("ebook", MODE_PRIVATE).toString();
String ebookfile = "";
//String filename = id[index];
String filename = id_all;
if(fileURL.endsWith("pdf"))
ebookfile = filename+".pdf";
else
ebookfile = filename+".epub";
bookfile = ebookfile;
Global.setBookfile(bookfile);
File file = new File(PATH);
file.mkdirs();
File outputFile = new File(file, ebookfile);
FileOutputStream fos = new FileOutputStream(outputFile);
lenghtOfFilee = c.getContentLength();
InputStream in = c.getInputStream();
byte[] buffer = new byte[1024];
int len1 = 0;
long total = 0;
while ((len1 = in.read(buffer)) > 0) {
total += len1; //total = total + len1
//publishProgress("" + (int)((total*100)/lenghtOfFilee));
fos.write(buffer, 0, len1);
}
fos.close();
} catch (Exception e) {
// Log.d("Downloader", e.getMessage());
}
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) {
Global.setBookfile(bookfile);
Toast.makeText(getApplicationContext(), "Downloading..."+lenghtOfFilee, Toast.LENGTH_LONG).show();
checkdownloadall();
//dismissDialog(DIALOG_DOWNLOAD_PROGRESS);
}
}

An asynchronous task runs on a background thread, so you directly access variable dload_all in function doInBackground() that is not thread safe. Maybe you can try:
private void startDownloadall() {
//String fileURL = dload_all;
//fileURL = fileURL.replace(" ", "%20");
new DownloadFileAsync1().execute(dload_all, id_all);
Toast.makeText(getApplicationContext(), "Downloading...start all", Toast.LENGTH_LONG).show();
}
class DownloadFileAsync1 extends AsyncTask<String, String, String> {
#Override
protected void onPreExecute() {
super.onPreExecute();
//showDialog(DIALOG_DOWNLOAD_PROGRESS);
}
#Override
protected String doInBackground(String... aurl) {
try {
String fileURL = args[0];
fileURL = fileURL.replace(" ", "%20");
URL u = new URL(fileURL);
HttpURLConnection c = (HttpURLConnection) u.openConnection();
c.setRequestMethod("GET");
c.setDoOutput(true);
c.connect();
String PATH = getDir("ebook", MODE_PRIVATE).toString();
String ebookfile = "";
//String filename = id[index];
String filename = args[1];
if(fileURL.endsWith("pdf"))
ebookfile = filename+".pdf";
else
ebookfile = filename+".epub";
bookfile = ebookfile;
Global.setBookfile(bookfile);
File file = new File(PATH);
file.mkdirs();
File outputFile = new File(file, ebookfile);
FileOutputStream fos = new FileOutputStream(outputFile);
lenghtOfFilee = c.getContentLength();
InputStream in = c.getInputStream();
byte[] buffer = new byte[1024];
int len1 = 0;
long total = 0;
while ((len1 = in.read(buffer)) > 0) {
total += len1; //total = total + len1
//publishProgress("" + (int)((total*100)/lenghtOfFilee));
fos.write(buffer, 0, len1);
}
fos.close();
} catch (Exception e) {
// Log.d("Downloader", e.getMessage());
}
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) {
Global.setBookfile(bookfile);
Toast.makeText(getApplicationContext(), "Downloading..."+lenghtOfFilee, Toast.LENGTH_LONG).show();
checkdownloadall();
//dismissDialog(DIALOG_DOWNLOAD_PROGRESS);
}
}