Develop Reference

How can I download pdf generated by Tcpdf from my android webview

Need a help to solve my problem.
In my android webview a pdf which is generated using tcpdf is not working properly ...
It generates some garbage values in the pdf
//download file
myWebView.setDownloadListener(new DownloadListener() {
#Override
public void onDownloadStart(String url, String userAgent, String contentDisposition, String mimetype, long contentLength) {
DownloadManager.Request myRequest = new DownloadManager.Request(Uri.parse(url));
myRequest.allowScanningByMediaScanner();
myRequest.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
//new
myRequest.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, "download");
//create download manager
DownloadManager myManager = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
myManager.enqueue(myRequest);
Toast.makeText(MainActivity.this, "Downloding file....", Toast.LENGTH_SHORT).show();
}
});
//TCPDF
myWebView.setDownloadListener(new DownloadListener() {
#Override
public void onDownloadStart(String url, String userAgent, String contentDisposition, String mimetype, long contentLength) {
//start download
DownloadPDF downlooadPDF = new DownloadPDF();
downlooadPDF.execute(url, userAgent, contentDisposition);
//Toast.makeText(MainActivity.this, "Downloding ...", Toast.LENGTH_SHORT).show();
}
});
}
//TCPDF
private class DownloadPDF extends AsyncTask<String, Integer, String> {
#Override
protected String doInBackground(String... sUrl) {
try {
URL url = new URL(sUrl[0]);
File myDir = new File(Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_DOWNLOADS).toString() + "/myPDF");
// create the directory if it does not exist
if (!myDir.exists()) myDir.mkdirs();
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setDoOutput(true);
connection.connect();
//get filename from the contentDisposition
String filename = null;
Pattern p = Pattern.compile("\"([^\"]*)\"");
Matcher m = p.matcher(sUrl[2]);
while (m.find()) {
filename = m.group(1);
}
File outputFile = new File(myDir, filename);
InputStream input = new BufferedInputStream(connection.getInputStream());
OutputStream output = new FileOutputStream(outputFile);
byte data[] = new byte[1024];
long total = 0;
int count;
while ((count = input.read(data)) != -1) {
total += count;
output.write(data, 0, count);
}
connection.disconnect();
output.flush();
output.close();
input.close();
displayPdf(); // a function to open the PDF file automatically
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
private void displayPdf() {
try {
Object filename = fileList();
File file = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS) + "/myPDF/" + filename);
Intent intent = new Intent();
intent.setAction(Intent.ACTION_VIEW);
Uri uri = Uri.fromFile(file);
intent.setDataAndType(uri, "application/pdf");
startActivity(intent);
} catch (Exception e) {
Log.i("TAG", e.getMessage());
}
}
}

How to download the files in specific folder in internal storage

I am trying to create a separate folder in internal storage of a phone for an app to download files on it. But the folder is not created in the phone. What is the reason? Also I have another issue in my app that is photos are not downloaded when I click thee download button.
Here is the download function
public void download() {
for (MediaModel item : Items) {
if (item.isSelected) {
Log.d("check", "download");
final String url = item.getFullDownloadURL();
BaseDownloadTask task = FileDownloader.getImpl().create(url);
task.setListener(mFileDownloadListener)
.setPath(Environment.getDataDirectory() + "/" + Constants.STORED_FOLDER, true)
.setAutoRetryTimes(1)
.setCallbackProgressTimes(0)
.asInQueueTask()
.enqueue();
if (FileDownloader.getImpl().start(mFileDownloadListener, true)) {
item.setTaskId(task.getId());
item.setStatus(ItemStatus.DOWNLOADING);
Logging.e(TAG, "start download task: " + task.getId());
} else {
item.setTaskId(task.getId());
item.setStatus(ItemStatus.NORMAL);
Logging.e(TAG, "error download task: " + task.getId());
}
}
}
}

In Android studio to use internal Storage First of all add permission in manifest
Like this:
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
then to make new directory in internal storage use this line of code:
File sdCardRoot = new File(Environment.getExternalStorageDirectory(), "MyProfile");
if (!sdCardRoot.exists()) {
sdCardRoot.mkdirs();
}
Log.e("check_path", "" + sdCardRoot.getAbsolutePath());
This is my full code:
In this code check directory is exist or not if directory is not exist then create directory
and use asyntask to download images from url
In this example i have use Java Language
Code
MyAsyncTasks asyncTasks = new MyAsyncTasks();
asyncTasks.execute(Imageurl);
and AsyncClass:
class MyAsyncTasks extends AsyncTask<String, String, String> {
File sdCardRoot;
#Override
protected String doInBackground(String... strings) {
HttpURLConnection urlConnection = null;
try {
URL url = new URL(strings[0]);
urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setRequestMethod("GET");
urlConnection.setDoOutput(true);
urlConnection.connect();
sdCardRoot = new File(Environment.getExternalStorageDirectory(), "MyProfile");
if (!sdCardRoot.exists()) {
sdCardRoot.mkdirs();
}
Log.e("check_path", "" + sdCardRoot.getAbsolutePath());
String fileName =
strings[0].substring(strings[0].lastIndexOf('/') + 1, strings[0].length());
Log.e("dfsdsjhgdjh", "" + fileName);
File imgFile =
new File(sdCardRoot, fileName);
if (!sdCardRoot.exists()) {
imgFile.createNewFile();
}
InputStream inputStream = urlConnection.getInputStream();
int totalSize = urlConnection.getContentLength();
FileOutputStream outPut = new FileOutputStream(imgFile);
int downloadedSize = 0;
byte[] buffer = new byte[2024];
int bufferLength = 0;
while ((bufferLength = inputStream.read(buffer)) > 0) {
outPut.write(buffer, 0, bufferLength);
downloadedSize += bufferLength;
Log.e("Progress:", "downloadedSize:" + Math.abs(downloadedSize * 100 / totalSize));
}
Log.e("Progress:", "imgFile.getAbsolutePath():" + imgFile.getAbsolutePath());
Log.e(TAG, "check image path 2" + imgFile.getAbsolutePath());
mImageArray.add(imgFile.getAbsolutePath());
outPut.close();
} catch (IOException e) {
e.printStackTrace();
Log.e("checkException:-", "" + e);
}
return null;
}
#Override
protected void onPostExecute(String s) {
super.onPostExecute(s);
imagecount++;
Log.e("check_count", "" + totalimagecount + "==" + imagecount);
if (totalimagecount == imagecount) {
pDialog.dismiss();
imagecount = 0;
}
Log.e("ffgnjkhjdh", "checkvalue checkvalue" + checkvalue);
}
}

Try This code:
private class DownloadingTask extends AsyncTask<Void, Void, Void> {
File apkStorage = null;
File outputFile = null;
#Override
protected void onPreExecute() {
super.onPreExecute();
progressDialog=new ProgressDialog(context);
progressDialog.setMessage("Downloading...");
progressDialog.show();
}
#Override
protected void onPostExecute(Void result) {
try {
if (outputFile != null) {
progressDialog.dismiss();
CDToast.makeText(context, context.getResources().getString(R.string.downloaded_successfully), CDToast.LENGTH_SHORT, CDToast.TYPE_SUCCESS).show();
Notification();
vibrateDevice(100);
} else {
new Handler().postDelayed(new Runnable() {
#Override
public void run() {
}
}, 3000);
CDToast.makeText(context, context.getResources().getString(R.string.download_failed), CDToast.LENGTH_SHORT, CDToast.TYPE_ERROR).show();
}
} catch (Exception e) {
e.printStackTrace();
//Change button text if an exception occurs
new Handler().postDelayed(new Runnable() {
#Override
public void run() {
}
}, 3000);
Log.e(TAG, "Download Failed with Exception - " + e.getLocalizedMessage());
}
super.onPostExecute(result);
}
#Override
protected Void doInBackground(Void... arg0) {
try {
URL url = new URL(downloadUrl);//Create Download URl
HttpURLConnection c = (HttpURLConnection) url.openConnection();//Open Url Connection
c.setRequestMethod("GET");//Set Request Method to "GET" since we are grtting data
c.connect();//connect the URL Connection
//If Connection response is not OK then show Logs
if (c.getResponseCode() != HttpURLConnection.HTTP_OK) {
Log.e(TAG, "Server returned HTTP " + c.getResponseCode()
+ " " + c.getResponseMessage());
}
//Get File if SD card is present
if (new CheckForSDCard().isSDCardPresent()) {
apkStorage = new File(
Environment.getExternalStorageDirectory() + "/"
+ "New_Folder_Name_Here");
} else
Toast.makeText(context, "Oops!! There is no SD Card.", Toast.LENGTH_SHORT).show();
//If File is not present create directory
if (!apkStorage.exists()) {
apkStorage.mkdir();
Log.e(TAG, "Directory Created.");
}
outputFile = new File(apkStorage, downloadFileName);//Create Output file in Main File
//Create New File if not present
if (!outputFile.exists()) {
outputFile.createNewFile();
Log.e(TAG, "File Created");
}
FileOutputStream fos = new FileOutputStream(outputFile);//Get OutputStream for NewFile Location
InputStream is = c.getInputStream();//Get InputStream for connection
byte[] buffer = new byte[1024];//Set buffer type
int len1 = 0;//init length
while ((len1 = is.read(buffer)) != -1) {
fos.write(buffer, 0, len1);//Write new file
}
//Close all connection after doing task
fos.close();
is.close();
} catch (Exception e) {
//Read exception if something went wrong
e.printStackTrace();
outputFile = null;
Log.e(TAG, "Download Error Exception " + e.getMessage());
}
return null;
}
}
For Checking SD card :
public class CheckForSDCard {
//Check If SD Card is present or not method
public boolean isSDCardPresent() {
if (Environment.getExternalStorageState().equals(
Environment.MEDIA_MOUNTED)) {
return true;
}
return false;
}
}

For creating folder
String path = Environment.getExternalStorageDirectory().getAbsolutePath() + "/Your Folder Name";
File folder = new File(path);
if (!folder.exists()) {
folder.mkdir();
}
also refer to this answer: https://stackoverflow.com/a/35471045/9060917
Update
public void download() {
for (MediaModel item : Items) {
if (item.isSelected) {
File file = new File(getFilesDir(),"Your directory name");
if(!file.exists()){
file.mkdir();
}
try{
Log.d("check", "download");
final String url = item.getFullDownloadURL();
BaseDownloadTask task = FileDownloader.getImpl().create(url);
task.setListener(mFileDownloadListener)
.setPath(file.getAbsolutePath(), true)
.setAutoRetryTimes(1)
.setCallbackProgressTimes(0)
.asInQueueTask()
.enqueue();
}catch (Exception e){
e.printStackTrace();
}
if (FileDownloader.getImpl().start(mFileDownloadListener, true)) {
item.setTaskId(task.getId());
item.setStatus(ItemStatus.DOWNLOADING);
Logging.e(TAG, "start download task: " + task.getId());
} else {
item.setTaskId(task.getId());
item.setStatus(ItemStatus.NORMAL);
Logging.e(TAG, "error download task: " + task.getId());
}
}
}
}
I hope you add these permissions in manifests
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
Update
When saving a file to internal storage, you can acquire the appropriate directory as a File by calling method
getFilesDir()
File directory = context.getFilesDir();
File file = new File(directory, filename);
Alternatively, you can call openFileOutput() to get a FileOutputStream that writes to a file in your internal directory. For example, here's how to write some text to a file:
String filename = "myfile";
String fileContents = "Hello world!";
FileOutputStream outputStream;
try {
outputStream = openFileOutput(filename, Context.MODE_PRIVATE);
outputStream.write(fileContents.getBytes());
outputStream.close();
} catch (Exception e) {
e.printStackTrace();
}
More reference
https://developer.android.com/training/data-storage/files#java

pass the URL of the image you want to download in this method.
/*--Download Image in Storage--*/
public void downloadImage(String URL) {
final Long reference;
downloadManager = (DownloadManager) getActivity().getSystemService(Context.DOWNLOAD_SERVICE);
Uri uri = Uri.parse(URL);
DownloadManager.Request request = new DownloadManager.Request(uri);
request.setTitle("AppName");
request.setDestinationInExternalPublicDir(String.format("%s/%s", Environment.getExternalStorageDirectory(),
getString(R.string.app_name)), "FileName.jpg");
Log.i("myi", "downloadImage: " + request.setDestinationInExternalPublicDir(String.format("%s/%s", Environment.getExternalStorageDirectory(),
getString(R.string.app_name)), "FileName.jpg"));
request.setVisibleInDownloadsUi(true);
request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
reference = downloadManager.enqueue(request);
Log.d("download", "Image Download : " + reference);
BroadcastReceiver onComplete = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
try {
Toast.makeText(this, "Image Downloaded Successfully ", Toast.LENGTH_LONG);
} catch (Exception e) {
}
}
};
getApplicationContext().registerReceiver(onComplete, new IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE));
}

Add the required permissions to the AndroidManifest.xml file.
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
Add requestLegacyExternalStorage for the application.
<application
android:requestLegacyExternalStorage="true">
</application>
Add the following snippet to the MainActivity.java
File f = new File(Environment.getExternalStorageDirectory(), "My folder");
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
try {
Files.createDirectory(Paths.get(f.getAbsolutePath()));
} catch (IOException e) {
e.printStackTrace();
Toast.makeText(getApplicationContext(), e.getLocalizedMessage(), Toast.LENGTH_LONG).show();
}
} else {
f.mkdir();
f.mkdirs();
Toast.makeText(getApplicationContext(), f.getPath(), Toast.LENGTH_LONG).show();
}
Now, the code to trigger the download would be something like:
String url="Here download Url paste";
DownloadManager downloadManager = (DownloadManager) context.getSystemService(Context.DOWNLOAD_SERVICE);
DownloadManager.Request request = new DownloadManager.Request(Uri.parse(url.toString()));
request.setAllowedNetworkTypes(DownloadManager.Request.NETWORK_MOBILE | DownloadManager.Request.NETWORK_WIFI);
request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
request.allowScanningByMediaScanner();
request.setDestinationInExternalPublicDir("/My folder", fileName);
downloadManager.enqueue(request);

Download a file with no extension from a server

I'm try to download a mp3 file from following URL. I found lot of articles and examples regarding file download. Those examples are based on URLs that end with a file extension, e.g.:- yourdomain.com/filename.mp3 but I want to download a file from following url which typically does not end with file extension.
youtubeinmp3.com/download/get/?i=1gsE32jF0aVaY0smDVf%2BmwnIZPrMDnGmchHBu0Hovd3Hl4NYqjNdym4RqjDSAis7p1n5O%2BeXmdwFxK9ugErLWQ%3D%3D
**Please note that I use the above url as-is without using Stackoverflow url formatting method to easily understand the question.
** I have tried the #Arsal Imam's solution as follows still not working
btnShowProgress.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// starting new Async Task
File cacheDir=new File(android.os.Environment.getExternalStorageDirectory(),"Folder Name");
if(!cacheDir.exists())
cacheDir.mkdirs();
File f=new File(cacheDir,"ddedddddd.mp3");
saveDir=f.getPath();
new DownloadFileFromURL().execute(fileURL);
}
});
and the async task code is as follows
class DownloadFileFromURL extends AsyncTask<String, String, String> {
#Override
protected void onPreExecute() {
super.onPreExecute();
showDialog(progress_bar_type);
}
#Override
protected String doInBackground(String... f_url) {
try{
URL url = new URL(fileURL);
HttpURLConnection httpConn = (HttpURLConnection) url.openConnection();
int responseCode = httpConn.getResponseCode();
// always check HTTP response code first
if (responseCode == HttpURLConnection.HTTP_OK) {
String fileName = "";
String disposition = httpConn.getHeaderField("Content-Disposition");
String contentType = httpConn.getContentType();
int contentLength = httpConn.getContentLength();
if (disposition != null) {
// extracts file name from header field
int index = disposition.indexOf("filename=");
if (index > 0) {
fileName = disposition.substring(index + 10,
disposition.length() - 1);
}
} else {
// extracts file name from URL
fileName = fileURL.substring(fileURL.lastIndexOf("/") + 1,
fileURL.length());
}
System.out.println("Content-Type = " + contentType);
System.out.println("Content-Disposition = " + disposition);
System.out.println("Content-Length = " + contentLength);
System.out.println("fileName = " + fileName);
// opens input stream from the HTTP connection
InputStream inputStream = httpConn.getInputStream();
String saveFilePath = saveDir + File.separator + fileName;
// opens an output stream to save into file
FileOutputStream outputStream = new FileOutputStream(saveDir);
int bytesRead = -1;
byte[] buffer = new byte[BUFFER_SIZE];
while ((bytesRead = inputStream.read(buffer)) != -1) {
outputStream.write(buffer, 0, bytesRead);
}
outputStream.close();
inputStream.close();
System.out.println("File downloaded");
} else {
System.out.println("No file to download. Server replied HTTP code: " + responseCode);
}
httpConn.disconnect();
}catch(Exception e){
e.printStackTrace();
}
return null;
}
protected void onProgressUpdate(String... progress) {
pDialog.setProgress(Integer.parseInt(progress[0]));
}
#Override
protected void onPostExecute(String file_url) {
dismissDialog(progress_bar_type);
}
}

Although Volley library is not recommended for large download or streaming operations, however, I'd like to share my following working sample code.
Let's assume we download only MP3 files so I hard-code the extension. And of course, we should check more carefully to avoid exceptions (NullPointer...) such as checking whether headers contain "Content-Disposition" key or not...
Hope this helps!
Volley Custom class:
public class BaseVolleyRequest extends Request<NetworkResponse> {
private final Response.Listener<NetworkResponse> mListener;
private final Response.ErrorListener mErrorListener;
public BaseVolleyRequest(String url, Response.Listener<NetworkResponse> listener, Response.ErrorListener errorListener) {
super(0, url, errorListener);
this.mListener = listener;
this.mErrorListener = errorListener;
}
#Override
protected Response<NetworkResponse> parseNetworkResponse(NetworkResponse response) {
try {
return Response.success(
response,
HttpHeaderParser.parseCacheHeaders(response));
} catch (JsonSyntaxException e) {
return Response.error(new ParseError(e));
} catch (Exception e) {
return Response.error(new ParseError(e));
}
}
#Override
protected void deliverResponse(NetworkResponse response) {
mListener.onResponse(response);
}
#Override
protected VolleyError parseNetworkError(VolleyError volleyError) {
return super.parseNetworkError(volleyError);
}
#Override
public void deliverError(VolleyError error) {
mErrorListener.onErrorResponse(error);
}
}
Then in your Activity:
public class BinaryVolleyActivity extends AppCompatActivity {
private final Context mContext = this;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_binary_volley);
RequestQueue requestQueue = Volley.newRequestQueue(mContext);
String url = "http://www.youtubeinmp3.com/download/get/?i=3sI2yV5mJ0kQ8CnddqmANZqK8a%2BgVQJ%2Fmg3xwhHTUsJKuusOCZUzebuWW%2BJSFs0oz8VTs6ES3gjohKQMogixlQ%3D%3D";
BaseVolleyRequest volleyRequest = new BaseVolleyRequest(url, new Response.Listener<NetworkResponse>() {
#Override
public void onResponse(NetworkResponse response) {
Map<String, String> headers = response.headers;
String contentDisposition = headers.get("Content-Disposition");
// String contentType = headers.get("Content-Type");
String[] temp = contentDisposition.split("filename=");
String fileName = temp[1].replace("\"", "") + ".mp3";
InputStream inputStream = new ByteArrayInputStream(response.data);
createLocalFile(inputStream, fileName);
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Log.e("Volley", error.toString());
}
});
volleyRequest.setRetryPolicy(new DefaultRetryPolicy(DefaultRetryPolicy.DEFAULT_TIMEOUT_MS * 10, DefaultRetryPolicy.DEFAULT_MAX_RETRIES, DefaultRetryPolicy.DEFAULT_BACKOFF_MULT));
requestQueue.add(volleyRequest);
}
private String createLocalFile(InputStream inputStream, String fileName) {
try {
String folderName = "MP3VOLLEY";
String extStorageDirectory = Environment.getExternalStorageDirectory().toString();
File folder = new File(extStorageDirectory, folderName);
folder.mkdir();
File file = new File(folder, fileName);
file.createNewFile();
FileOutputStream f = new FileOutputStream(file);
byte[] buffer = new byte[1024];
int length;
while ((length = inputStream.read(buffer)) > 0) {
f.write(buffer, 0, length);
}
//f.flush();
f.close();
return file.getPath();
} catch (IOException e) {
return e.getMessage();
}
}
}
Here the result screenshot:
NOTE:
As I commented below, because the direct download Url changes regularly, you should check the new url with some tools such as Postman for Chrome, if it responses binary instead of a web page (expired url), then the Url is valid and my code works for that Url.
Refer to the two following screenshots:
Expired url:
Un-expired url:
UPDATE BASIC LOGIC FOR GETTING DIRECT DOWNLOAD LINK FROM THAT SITE'S DOCUMENTATION:
According to Create Your Own YouTube To MP3 Downloader For Free
You can take a look at
JSON Example
You can also receive the data in JSON by setting the "format"
parameter to "JSON".
http://YouTubeInMP3.com/fetch/?format=JSON&video=http://www.youtube.com/watch?v=i62Zjga8JOM
Firstly, you create a JsonObjectRequest getting response from the above file link. Then, inside onResponse of this JsonObjectRequest you will get the direct download link, like this directUrl = response.getString("link"); and use BaseVolleyRequest volleyRequest
I have just told the logic for getting direct url, IMO, you should implement it yourself. Goodluck!

Use below code it works fine for encrypted URLs
public class HttpDownloadUtility {
private static final int BUFFER_SIZE = 4096;
/**
* Downloads a file from a URL
* #param fileURL HTTP URL of the file to be downloaded
* #param saveDir path of the directory to save the file
* #throws IOException
*/
public static void downloadFile(String fileURL, String saveDir)
throws IOException {
URL url = new URL(fileURL);
HttpURLConnection httpConn = (HttpURLConnection) url.openConnection();
int responseCode = httpConn.getResponseCode();
// always check HTTP response code first
if (responseCode == HttpURLConnection.HTTP_OK) {
String fileName = "";
String disposition = httpConn.getHeaderField("Content-Disposition");
String contentType = httpConn.getContentType();
int contentLength = httpConn.getContentLength();
if (disposition != null) {
// extracts file name from header field
int index = disposition.indexOf("filename=");
if (index > 0) {
fileName = disposition.substring(index + 10,
disposition.length() - 1);
}
} else {
// extracts file name from URL
fileName = fileURL.substring(fileURL.lastIndexOf("/") + 1,
fileURL.length());
}
System.out.println("Content-Type = " + contentType);
System.out.println("Content-Disposition = " + disposition);
System.out.println("Content-Length = " + contentLength);
System.out.println("fileName = " + fileName);
// opens input stream from the HTTP connection
InputStream inputStream = httpConn.getInputStream();
String saveFilePath = saveDir + File.separator + fileName;
// opens an output stream to save into file
FileOutputStream outputStream = new FileOutputStream(saveFilePath);
int bytesRead = -1;
byte[] buffer = new byte[BUFFER_SIZE];
while ((bytesRead = inputStream.read(buffer)) != -1) {
outputStream.write(buffer, 0, bytesRead);
}
outputStream.close();
inputStream.close();
System.out.println("File downloaded");
} else {
System.out.println("No file to download. Server replied HTTP code: " + responseCode);
}
httpConn.disconnect();
}
}

The url returns a 302 redirect to the actual .mp3. The browser does the redirect in the background for you, but in your app you need to do it yourself. Here is an example on how to do that with HttpUrlConnection http://www.mkyong.com/java/java-httpurlconnection-follow-redirect-example/

If you know the type of file in advance then you can download your file from url which don't have extension.
DownloadService .java
public class DownloadService extends IntentService {
public static final int UPDATE_PROGRESS = 8344;
private Context context;
private PowerManager.WakeLock mWakeLock;
ProgressDialog mProgressDialog;
String filename;
File mypath;
String urlToDownload;
BroadcastReceiver broadcaster;
Intent intent1;
static final public String BROADCAST_ACTION = "com.example.app.activity.test.broadcast";
public DownloadService() {
super("DownloadService");
}
#Override
public void onCreate() {
// TODO Auto-generated method stub
super.onCreate();
intent1 = new Intent(BROADCAST_ACTION);
}
#Override
protected void onHandleIntent(Intent intent) {
ResultReceiver receiver = (ResultReceiver) intent.getParcelableExtra("receiver");
try {
intent1 = new Intent(BROADCAST_ACTION);
urlToDownload = intent.getStringExtra("url");
filename= intent.getStringExtra("filename");
BufferedWriter out;
try {
File path=new File("/sdcard/","folder name");
path.mkdir();
mypath=new File(path,filename);
Log.e("mypath",""+mypath);
if (!mypath.exists()) {
out= new BufferedWriter(new FileWriter(mypath));
//ut = new OutputStreamWriter(context.openFileOutput( mypath.getAbsolutePath() ,Context.MODE_PRIVATE));
out.write("test");
out.close();
}
}catch(Exception e){
e.printStackTrace();
}
URL url = new URL(urlToDownload);
URLConnection connection = url.openConnection();
connection.connect();
// this will be useful so that you can show a typical 0-100% progress bar
int fileLength = connection.getContentLength();
// download the file
InputStream input = new BufferedInputStream(connection.getInputStream());
OutputStream output = new FileOutputStream(mypath);
byte data[] = new byte[4096];
long total = 0;
int count;
while ((count = input.read(data)) != -1) {
total += count;
// publishing the progress....
Bundle resultData = new Bundle();
resultData.putInt("progress" ,(int) (total * 100 / fileLength));
//Log.e("mypath",""+mypath);
resultData.putString("mypath", ""+mypath);
receiver.send(UPDATE_PROGRESS, resultData);
output.write(data, 0, count);
}
output.flush();
output.close();
input.close();
} catch (IOException e) {
e.printStackTrace();
}
Bundle resultData = new Bundle();
resultData.putInt("progress" ,100);
resultData.putString("mypath", ""+mypath);
receiver.send(UPDATE_PROGRESS, resultData);
intent1.putExtra("progressbar", 100);
sendBroadcast(intent1);
}
}
DownloadReceiver.java
public class DownloadReceiver extends ResultReceiver{
private Context context;
private PowerManager.WakeLock mWakeLock;
ProgressDialog mProgressDialog;
String filename;
String mypath;
public DownloadReceiver(Handler handler ,String filename ,Context context) {
super(handler);
this.context = context;
this.filename = filename;
mProgressDialog = new ProgressDialog(context);
}
#Override
protected void onReceiveResult(int resultCode, Bundle resultData) {
super.onReceiveResult(resultCode, resultData);
if (resultCode == DownloadService.UPDATE_PROGRESS) {
int progress = resultData.getInt("progress");
mypath = resultData.getString("mypath");
mProgressDialog.setProgress(progress);
//Log.e("progress","progress");
mProgressDialog.setMessage("App name");
mProgressDialog.setIndeterminate(true);
mProgressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
mProgressDialog.setCancelable(true);
if (progress == 100) {
mProgressDialog.dismiss();
Log.e("download","download");
}
}
}
}
Now start service in your mainactivity by below code :
Intent miIntent = new Intent(mContext, DownloadService.class);
miIntent.putExtra("url", url);
miIntent.putExtra("filename", id+".mp3");
miIntent.putExtra("receiver", new DownloadReceiver(new Handler() , id,mContext));
startService(miIntent);

Download more than 500 mb size video or image file from server to sdcard in android?

i am trying to download images and videos from server to sdcard for offline play.
but problem is if image and video size is morethan 35 mb than video is not dowloaded and app is crash.
my image size is upto 50mb and video size is 50 to 500mb most video size is 300mb so how can i dowload the images and video related to this size.
here i put my code so you can check it
HomeActivity.java
public class HomeActivity extends Activity
{
ProgressDialog progressdialog;
ArrayList<HashMap<String,String>> myplaylist = new ArrayList<HashMap<String,String>>();
String filename="";
int count=0;
PowerManager pm;
WakeLock wl;
ImageView imageview;
VideoView videoview;
int length=0;
int i=0;
boolean video=false;
private final int TIMEOUT_CONNECTION = 10000;//5sec
private final int TIMEOUT_SOCKET = 10000;//30sec
#SuppressLint("Wakelock")
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
imageview=(ImageView)findViewById(R.id.imageview);
videoview=(VideoView)findViewById(R.id.videoview);
pm = (PowerManager)getApplicationContext().getSystemService(
getApplicationContext().POWER_SERVICE);
wl = pm.newWakeLock(PowerManager.FULL_WAKE_LOCK, "WakeLockOn");
wl.acquire();
HashMap<String, String> map = new HashMap<String, String>();
map.put("image","http://pr83.webofficeserver.info/img/sliderimg/original/1387205637Desertkp123-232.jpg");
map.put("type","video");
myplaylist.add(map);
HashMap<String, String> map2 = new HashMap<String, String>();
map2.put("image","http://pr83.webofficeserver.info/img/thumbnails/video/dummy.mov");
map2.put("type","image");
myplaylist.add(map2);
HashMap<String, String> map3 = new HashMap<String, String>();
map3.put("image","http://pr83.webofficeserver.info/img/sliderimg/original/1387206137planet-earth-in-space.jpg");
map3.put("type","video");
myplaylist.add(map3);
HashMap<String, String> map4 = new HashMap<String, String>();
map4.put("image","http://pr83.webofficeserver.info/img/thumbnails/video/BrandHi-240.mp4");
map4.put("type","video");
myplaylist.add(map4);
new DownloadFileFromURL().execute(myplaylist.get(count).get("image").toString());
}
// For Download File From Url
public class DownloadFileFromURL extends AsyncTask<String, String, String>
{
private final int TIMEOUT_CONNECTION = 10000;//5sec
private final int TIMEOUT_SOCKET = 10000;//30sec
#Override
protected void onPreExecute()
{
progressdialog=ProgressDialog.show(HomeActivity.this, "","Please Wait");
}
#Override
protected String doInBackground(String... f_url) {
int count;
try {
String root = Environment.getExternalStorageDirectory().toString();
new File(root + "/montorwerbung").mkdirs();
URL url = new URL(f_url[0]);
Uri u = Uri.parse(f_url[0]);
File f1 = new File("" + u);
filename=f1.getName();
File file = new File(root + "/montorwerbung" , filename);
Log.e("File Download Sdcard Filename","--->"+filename);
Log.e("File Download Sdcard Path","--->"+file.toString());
long startTime = System.currentTimeMillis();
//Open a connection to that URL.
URLConnection ucon = url.openConnection();
//this timeout affects how long it takes for the app to realize there's a connection problem
// ucon.setReadTimeout(TIMEOUT_CONNECTION);
// ucon.setConnectTimeout(TIMEOUT_SOCKET);
//Define InputStreams to read from the URLConnection.
// uses 3KB download buffer
InputStream is = ucon.getInputStream();
BufferedInputStream inStream = new BufferedInputStream(is, 1024 * 1024);
FileOutputStream outStream = new FileOutputStream(file);
byte[] buff = new byte[10 * 1024];
//Read bytes (and store them) until there is nothing more to read(-1)
int len;
while ((len = inStream.read(buff)) != -1)
{
outStream.write(buff,0,len);
}
//clean up
outStream.flush();
outStream.close();
inStream.close();
} catch (Exception e)
{
Log.e("Download file frp, server Exception", "Exception : "
+ e.getMessage(), e);
//Log.e("Error: ",+e.printStackTrace());
}
return null;
}
#Override
protected void onPostExecute(String file_url)
{
if(progressdialog.isShowing())
{
progressdialog.dismiss();
}
Log.e("Count: ","----->"+count);
count++;
if(count<myplaylist.size())
{
new DownloadFileFromURL2().execute(myplaylist.get(count).get("image").toString());
}
else
{
wl.release();
Log.e("No More Downloads","--->");
}
}
}
class DownloadFileFromURL2 extends AsyncTask<String, String, String>
{
#Override
protected void onPreExecute()
{
progressdialog=ProgressDialog.show(HomeActivity.this, "","Please Wait");
}
#Override
protected String doInBackground(String... f_url) {
int count;
try {
String root = Environment.getExternalStorageDirectory().toString();
new File(root + "/montorwerbung").mkdirs();
URL url = new URL(f_url[0]);
Uri u = Uri.parse(f_url[0]);
File f1 = new File("" + u);
filename=f1.getName();
File file = new File(root + "/montorwerbung" , filename);
Log.e("File Download Sdcard Filename","--->"+filename);
Log.e("File Download Sdcard Path","--->"+file.toString());
long startTime = System.currentTimeMillis();
//Open a connection to that URL.
URLConnection ucon = url.openConnection();
//Define InputStreams to read from the URLConnection.
// uses 3KB download buffer
InputStream is = ucon.getInputStream();
BufferedInputStream inStream = new BufferedInputStream(is, 1024 * 10);
FileOutputStream outStream = new FileOutputStream(file);
byte[] buff = new byte[10 * 1024];
//Read bytes (and store them) until there is nothing more to read(-1)
int len;
while ((len = inStream.read(buff)) != -1)
{
outStream.write(buff,0,len);
}
//clean up
outStream.flush();
outStream.close();
inStream.close();
} catch (Exception e)
{
Log.e("Download file frp, server Exception", "Exception : "
+ e.getMessage(), e);
//Log.e("Error: ",+e.printStackTrace());
}
return null;
}
#Override
protected void onPostExecute(String file_url)
{
if(progressdialog.isShowing())
{
progressdialog.dismiss();
}
count++;
Log.e("Count: ","----->"+count);
if(count<myplaylist.size())
{
new DownloadFileFromURL().execute(myplaylist.get(count).get("image").toString());
count++;
}
else
{
wl.release();
Log.e("No More Downloads 2","--->");
}
}
}

How to write XML file on Android, getting from remote server

I need sometimes read XML file from remote server, and replace data in XML on my Android device.
I read data through XmlPullParser:
XmlPullParser users;
try {
URL xmlUrl = new URL("http://xx.xx.xx.xx/1.xml");
users = XmlPullParserFactory.newInstance().newPullParser();
users.setInput(xmlUrl.openStream(), null);
}
How can I replace it on Android?

Simply use this code, it's overwrites the file with the new file you download from the internet.
public static boolean downloadFile(String fileToDownload, File newPath,
String newFileName) {
try {
URL url = new URL(fileToDownload);
HttpURLConnection urlConnection = (HttpURLConnection) url
.openConnection();
urlConnection.setRequestMethod("GET");
urlConnection.setDoOutput(true);
urlConnection.connect();
if (!newPath.isDirectory()) {
CreateLog.createFolder(newPath.toString());
}
File file = new File(newPath.toString() + "/" + newFileName);
if (!file.isFile()) {
CreateLog.writeLogToFile(newPath.toString() + newFileName,
"%TEMP%");
}
FileOutputStream fileOutput = new FileOutputStream(file);
InputStream inputStream = urlConnection.getInputStream();
byte[] buffer = new byte[1024];
int bufferLength = 0;
while ((bufferLength = inputStream.read(buffer)) > 0) {
fileOutput.write(buffer, 0, bufferLength);
}
fileOutput.close();
return true;
} catch (MalformedURLException e) {
CreateLog.addToLog(e.toString());
return false;
} catch (IOException e) {
CreateLog.addToLog(e.toString());
return false;
}
}
public static void createFolder(String filePath) {
File createFolder = new File(filePath);
createFolder.mkdirs();
}
A cleaner method is to use a Asynctask, the code runs in a new thread. But it's a bit harder to code.
private class GetProblems extends AsyncTask<String, Integer, String> {
#Override
protected void onPreExecute() {
super.onPreExecute();
}
#Override
protected String doInBackground(String... params) {
for (String myUrl : params) {
try {
URL url = new URL(myUrl);
URLConnection ucon = url.openConnection();
ucon.setRequestProperty("Accept", "application/xml");
InputStream is = ucon.getInputStream();
BufferedInputStream bis = new BufferedInputStream(is);
ByteArrayBuffer baf = new ByteArrayBuffer(50);
int current = 0;
while ((current = bis.read()) != -1) {
baf.append((byte) current);
}
String str = new String(baf.toByteArray(), "UTF8");
return str;
} catch (MalformedURLException e) {
CreateLog.addToLog("[GetProblems] " + e.toString());
} catch (IOException e) {
CreateLog.addToLog("[GetProblems] " + e.toString());
}
}
return "error";
}
#Override
protected void onProgressUpdate(Integer... values) {
super.onProgressUpdate(values);
// updateProgressBar(values[0]);
}
#Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
...write result to a file
}
}
Run the AsyncTask code:
new GetProblems().execute("http://myurl.com/xmlfile.xml");