Downloading a file from an URL?
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1
I am using the following code to download PDF files.
private class downloadPaper extends AsyncTask<String, String, String>
private ProgressDialog progressDialog;
private boolean isDownloaded;
private String destination = *path to folder on phone*;
@Override
protected void onPreExecute()
super.onPreExecute();
this.progressDialog = new ProgressDialog(ActivityPaper.this);
this.progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
this.progressDialog.setCancelable(false);
this.progressDialog.show();
@Override
protected String doInBackground(String... url)
int count;
try
URL getUrl = new URL(url[0]);
URLConnection connection = getUrl.openConnection();
connection.connect();
// getting file length
int lengthOfFile = connection.getContentLength();
// input stream to read file - with 8k buffer
InputStream input = new BufferedInputStream(getUrl.openStream(), 8192);
// Output stream to write file
OutputStream output = new FileOutputStream(destination);
byte data = new byte[1024];
long total = 0;
while ((count = input.read(data)) != -1)
total += count;
// publishing the progress....
// After this onProgressUpdate will be called
publishProgress("" + (int) ((total * 100) / lengthOfFile));
Log.d(TAG, "Progress: " + (int) ((total * 100) / lengthOfFile));
// writing data to file
output.write(data, 0, count);
// flushing output
output.flush();
// closing streams
output.close();
input.close();
return "success";
catch (Exception e)
Log.e("Error: ", e.getMessage());
return getString(R.string.somethingWrong);
/**
* Updating progress bar
*/
protected void onProgressUpdate(String... progress)
// setting progress percentage
progressDialog.setProgress(Integer.parseInt(progress[0]));
@Override
protected void onPostExecute(String message)
// dismiss the dialog after the file was downloaded
this.progressDialog.dismiss();
// Display File path after downloading
Toast.makeText(getApplicationContext(), message, Toast.LENGTH_LONG).show();
I am getting the following response,
E/Error:: Unexpected status line: <html>
I have tried changing the file source URL to other PDFs on different websites and its working fine. The error only shows when I try to download from my server. I am guessing its a server configuration issue.
java
android edited Nov 15 '18 at 13:30
Fantômas
32.9k156491
asked Nov 15 '18 at 12:22
Tresford Himanansa IITresford Himanansa II
3715
add a comment |
1
I am using the following code to download PDF files.
private class downloadPaper extends AsyncTask<String, String, String>
private ProgressDialog progressDialog;
private boolean isDownloaded;
private String destination = *path to folder on phone*;
@Override
protected void onPreExecute()
super.onPreExecute();
this.progressDialog = new ProgressDialog(ActivityPaper.this);
this.progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
this.progressDialog.setCancelable(false);
this.progressDialog.show();
@Override
protected String doInBackground(String... url)
int count;
try
URL getUrl = new URL(url[0]);
URLConnection connection = getUrl.openConnection();
connection.connect();
// getting file length
int lengthOfFile = connection.getContentLength();
// input stream to read file - with 8k buffer
InputStream input = new BufferedInputStream(getUrl.openStream(), 8192);
// Output stream to write file
OutputStream output = new FileOutputStream(destination);
byte data = new byte[1024];
long total = 0;
while ((count = input.read(data)) != -1)
total += count;
// publishing the progress....
// After this onProgressUpdate will be called
publishProgress("" + (int) ((total * 100) / lengthOfFile));
Log.d(TAG, "Progress: " + (int) ((total * 100) / lengthOfFile));
// writing data to file
output.write(data, 0, count);
// flushing output
output.flush();
// closing streams
output.close();
input.close();
return "success";
catch (Exception e)
Log.e("Error: ", e.getMessage());
return getString(R.string.somethingWrong);
/**
* Updating progress bar
*/
protected void onProgressUpdate(String... progress)
// setting progress percentage
progressDialog.setProgress(Integer.parseInt(progress[0]));
@Override
protected void onPostExecute(String message)
// dismiss the dialog after the file was downloaded
this.progressDialog.dismiss();
// Display File path after downloading
Toast.makeText(getApplicationContext(), message, Toast.LENGTH_LONG).show();
I am getting the following response,
E/Error:: Unexpected status line: <html>
I have tried changing the file source URL to other PDFs on different websites and its working fine. The error only shows when I try to download from my server. I am guessing its a server configuration issue.
java
android edited Nov 15 '18 at 13:30
Fantômas
32.9k156491
asked Nov 15 '18 at 12:22
Tresford Himanansa IITresford Himanansa II
3715
refer this link stackoverflow.com/questions/3028306/…
– Android Team
Nov 15 '18 at 12:30
So it seems you caught an exception. Can you print more of the exception (e.g. stack trace) to have more information what is going wrong and where?
– Henry
Nov 15 '18 at 12:34
I suggest you to check the link you provide to download. I am pretty sure it is returning some html doc or so. Like you say, if you download file from other url then it's working fine.
– Sanjog Shrestha
Nov 15 '18 at 12:43
it's certainly looking about the user agent or else to not let bots scrap their pdfs. Look at your complete request and try to reproduce with curl or whatever.
– mcfly
Nov 15 '18 at 13:35
add a comment |
1
1
1
I am using the following code to download PDF files.
private class downloadPaper extends AsyncTask<String, String, String>
private ProgressDialog progressDialog;
private boolean isDownloaded;
private String destination = *path to folder on phone*;
@Override
protected void onPreExecute()
super.onPreExecute();
this.progressDialog = new ProgressDialog(ActivityPaper.this);
this.progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
this.progressDialog.setCancelable(false);
this.progressDialog.show();
@Override
protected String doInBackground(String... url)
int count;
try
URL getUrl = new URL(url[0]);
URLConnection connection = getUrl.openConnection();
connection.connect();
// getting file length
int lengthOfFile = connection.getContentLength();
// input stream to read file - with 8k buffer
InputStream input = new BufferedInputStream(getUrl.openStream(), 8192);
// Output stream to write file
OutputStream output = new FileOutputStream(destination);
byte data = new byte[1024];
long total = 0;
while ((count = input.read(data)) != -1)
total += count;
// publishing the progress....
// After this onProgressUpdate will be called
publishProgress("" + (int) ((total * 100) / lengthOfFile));
Log.d(TAG, "Progress: " + (int) ((total * 100) / lengthOfFile));
// writing data to file
output.write(data, 0, count);
// flushing output
output.flush();
// closing streams
output.close();
input.close();
return "success";
catch (Exception e)
Log.e("Error: ", e.getMessage());
return getString(R.string.somethingWrong);
/**
* Updating progress bar
*/
protected void onProgressUpdate(String... progress)
// setting progress percentage
progressDialog.setProgress(Integer.parseInt(progress[0]));
@Override
protected void onPostExecute(String message)
// dismiss the dialog after the file was downloaded
this.progressDialog.dismiss();
// Display File path after downloading
Toast.makeText(getApplicationContext(), message, Toast.LENGTH_LONG).show();
I am getting the following response,
E/Error:: Unexpected status line: <html>
I have tried changing the file source URL to other PDFs on different websites and its working fine. The error only shows when I try to download from my server. I am guessing its a server configuration issue.
java
android edited Nov 15 '18 at 13:30
Fantômas
32.9k156491
asked Nov 15 '18 at 12:22
Tresford Himanansa IITresford Himanansa II
3715
I am using the following code to download PDF files.
private class downloadPaper extends AsyncTask<String, String, String>
private ProgressDialog progressDialog;
private boolean isDownloaded;
private String destination = *path to folder on phone*;
@Override
protected void onPreExecute()
super.onPreExecute();
this.progressDialog = new ProgressDialog(ActivityPaper.this);
this.progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
this.progressDialog.setCancelable(false);
this.progressDialog.show();
@Override
protected String doInBackground(String... url)
int count;
try
URL getUrl = new URL(url[0]);
URLConnection connection = getUrl.openConnection();
connection.connect();
// getting file length
int lengthOfFile = connection.getContentLength();
// input stream to read file - with 8k buffer
InputStream input = new BufferedInputStream(getUrl.openStream(), 8192);
// Output stream to write file
OutputStream output = new FileOutputStream(destination);
byte data = new byte[1024];
long total = 0;
while ((count = input.read(data)) != -1)
total += count;
// publishing the progress....
// After this onProgressUpdate will be called
publishProgress("" + (int) ((total * 100) / lengthOfFile));
Log.d(TAG, "Progress: " + (int) ((total * 100) / lengthOfFile));
// writing data to file
output.write(data, 0, count);
// flushing output
output.flush();
// closing streams
output.close();
input.close();
return "success";
catch (Exception e)
Log.e("Error: ", e.getMessage());
return getString(R.string.somethingWrong);
/**
* Updating progress bar
*/
protected void onProgressUpdate(String... progress)
// setting progress percentage
progressDialog.setProgress(Integer.parseInt(progress[0]));
@Override
protected void onPostExecute(String message)
// dismiss the dialog after the file was downloaded
this.progressDialog.dismiss();
// Display File path after downloading
Toast.makeText(getApplicationContext(), message, Toast.LENGTH_LONG).show();
I am getting the following response,
E/Error:: Unexpected status line: <html>
I have tried changing the file source URL to other PDFs on different websites and its working fine. The error only shows when I try to download from my server. I am guessing its a server configuration issue.
java
android java
android edited Nov 15 '18 at 13:30
Fantômas
32.9k156491
asked Nov 15 '18 at 12:22
Tresford Himanansa IITresford Himanansa II
3715
edited Nov 15 '18 at 13:30
Fantômas
32.9k156491
asked Nov 15 '18 at 12:22
Tresford Himanansa IITresford Himanansa II
3715
edited Nov 15 '18 at 13:30
Fantômas
32.9k156491
edited Nov 15 '18 at 13:30
Fantômas
32.9k156491
edited Nov 15 '18 at 13:30
Fantômas
32.9k156491
32.9k156491
asked Nov 15 '18 at 12:22
Tresford Himanansa IITresford Himanansa II
3715
asked Nov 15 '18 at 12:22
Tresford Himanansa IITresford Himanansa II
3715
asked Nov 15 '18 at 12:22
Tresford Himanansa IITresford Himanansa II
3715
3715
refer this link stackoverflow.com/questions/3028306/…
– Android Team
Nov 15 '18 at 12:30
So it seems you caught an exception. Can you print more of the exception (e.g. stack trace) to have more information what is going wrong and where?
– Henry
Nov 15 '18 at 12:34
I suggest you to check the link you provide to download. I am pretty sure it is returning some html doc or so. Like you say, if you download file from other url then it's working fine.
– Sanjog Shrestha
Nov 15 '18 at 12:43
it's certainly looking about the user agent or else to not let bots scrap their pdfs. Look at your complete request and try to reproduce with curl or whatever.
– mcfly
Nov 15 '18 at 13:35
add a comment |
refer this link stackoverflow.com/questions/3028306/…
– Android Team
Nov 15 '18 at 12:30
So it seems you caught an exception. Can you print more of the exception (e.g. stack trace) to have more information what is going wrong and where?
– Henry
Nov 15 '18 at 12:34
I suggest you to check the link you provide to download. I am pretty sure it is returning some html doc or so. Like you say, if you download file from other url then it's working fine.
– Sanjog Shrestha
Nov 15 '18 at 12:43
it's certainly looking about the user agent or else to not let bots scrap their pdfs. Look at your complete request and try to reproduce with curl or whatever.
– mcfly
Nov 15 '18 at 13:35
refer this link stackoverflow.com/questions/3028306/…
– Android Team
Nov 15 '18 at 12:30
refer this link stackoverflow.com/questions/3028306/…
– Android Team
Nov 15 '18 at 12:30
So it seems you caught an exception. Can you print more of the exception (e.g. stack trace) to have more information what is going wrong and where?
– Henry
Nov 15 '18 at 12:34
So it seems you caught an exception. Can you print more of the exception (e.g. stack trace) to have more information what is going wrong and where?
– Henry
Nov 15 '18 at 12:34
I suggest you to check the link you provide to download. I am pretty sure it is returning some html doc or so. Like you say, if you download file from other url then it's working fine.
– Sanjog Shrestha
Nov 15 '18 at 12:43
I suggest you to check the link you provide to download. I am pretty sure it is returning some html doc or so. Like you say, if you download file from other url then it's working fine.
– Sanjog Shrestha
Nov 15 '18 at 12:43
it's certainly looking about the user agent or else to not let bots scrap their pdfs. Look at your complete request and try to reproduce with curl or whatever.
– mcfly
Nov 15 '18 at 13:35
it's certainly looking about the user agent or else to not let bots scrap their pdfs. Look at your complete request and try to reproduce with curl or whatever.
– mcfly
Nov 15 '18 at 13:35
add a comment |
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refer this link stackoverflow.com/questions/3028306/…
– Android Team
Nov 15 '18 at 12:30
So it seems you caught an exception. Can you print more of the exception (e.g. stack trace) to have more information what is going wrong and where?
– Henry
Nov 15 '18 at 12:34
I suggest you to check the link you provide to download. I am pretty sure it is returning some html doc or so. Like you say, if you download file from other url then it's working fine.
– Sanjog Shrestha
Nov 15 '18 at 12:43
it's certainly looking about the user agent or else to not let bots scrap their pdfs. Look at your complete request and try to reproduce with curl or whatever.
– mcfly
Nov 15 '18 at 13:35