Develop Reference

Unsuccessful attempt to create a folder and save mp3 file in android

I have an online music player in which I dedicated a button in order to download the file. There's a "progressDialog" which works fine and shows progress of downloading file and it seems that it's really downloading my file. But after completion there's no folder nor file on my device.
I also added Write External Storage permission in my manifest.
Here's my download class:
public class DownloadTask extends AsyncTask<String, Integer, String> {
#SuppressLint("StaticFieldLeak")
private Context context;
public static ProgressDialog progressBar;
public DownloadTask(Context context) {
this.context = context;
progressBar = new ProgressDialog(context);
progressBar.setMessage("Downloading...");
progressBar.setIndeterminate(true);
progressBar.setCancelable(true);
progressBar.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
}
#Override
protected void onPreExecute() {
super.onPreExecute();
progressBar.show();
}
#Override
protected String doInBackground(String... strings) {
InputStream inputStream = null;
OutputStream outputStream = null;
HttpURLConnection connection = null;
try {
URL url = new URL(strings[0]);
connection = (HttpURLConnection) url.openConnection();
connection.connect();
int fileLength = connection.getContentLength();
inputStream = connection.getInputStream();
fileCache();
outputStream = new FileOutputStream(context.getFilesDir() + "listening"
+ strings[1] + ".mp3");
byte[] data = new byte[4096];
long total = 0;
int count;
while ((count = inputStream.read(data)) != -1) {
total += count;
if (fileLength > 0)
publishProgress((int) (total * 100 / fileLength));
outputStream.write(data, 0, count);
}
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (outputStream != null) {
outputStream.flush();
outputStream.close();
}
if (inputStream != null)
inputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
if (connection != null)
connection.disconnect();
}
return null;
}
#Override
protected void onProgressUpdate(Integer... values) {
super.onProgressUpdate(values);
progressBar.setIndeterminate(false);
progressBar.setMax(100);
progressBar.setProgress(values[0]);
}
#Override
protected void onPostExecute(String s) {
super.onPostExecute(s);
progressBar.dismiss();
if (s != null) {
Toast.makeText(context, "Error while Downloading", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(context, "Downloaded successfully", Toast.LENGTH_SHORT).show();
}
}
private void fileCache() {
File myDir = new File(context.getFilesDir(), "listening");
if (!myDir.exists()) {
myDir.mkdirs();
}
}
}
And here's my button's function:
DownloadTask downloadTask = new DownloadTask(context);
downloadTask.execute(extra.getString("link"), extra.getString("title"));

How to download sqlite database file from the server in Android?

protected void doDownload(final String urlLink, final String fileName) {
Thread dx = new Thread() {
public void run() {
File root = android.os.Environment.getExternalStorageDirectory();
File dir = new File (root.getAbsolutePath() + "/Content2/");
if(dir.exists()==false) {
dir.mkdirs();
}
//Save the path as a string value
try
{
URL url = new URL(urlLink);
Log.i("FILE_NAME", "File name is "+imageFile);
Log.i("FILE_URLLINK", "File URL is "+url);
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(url.openStream());
OutputStream output = new FileOutputStream(dir+"/"+imageFile);
byte data[] = new byte[1024];
long total = 0;
int count;
while ((count = input.read(data)) != -1) {
total += count;
output.write(data, 0, count);
}
output.flush();
output.close();
input.close();
}
catch (Exception e)
{
e.printStackTrace();
Log.i("ERROR ON DOWNLOADING FILES", "ERROR IS" +e);
}
}
};
dx.start();
}
through this, I cannot download the file from the server.
How to solve this problem?

First of all you should use Async-Task.
Here is how you can do this
final DownloadTask downloadTask = new DownloadTask(YourActivity.this);
downloadTask.execute("the url to the file you want to download");
// usually, subclasses of AsyncTask are declared inside the activity class.
// that way, you can easily modify the UI thread from here
private class DownloadTask extends AsyncTask<String, Integer, String> {
private Context context;
public DownloadTask(Context context) {
this.context = context;
}
#Override
protected String doInBackground(String... sUrl) {
InputStream input = null;
OutputStream output = null;
HttpURLConnection connection = null;
try {
URL url = new URL(sUrl[0]);
connection = (HttpURLConnection) url.openConnection();
connection.connect();
// expect HTTP 200 OK, so we don't mistakenly save error report
// instead of the file
if (connection.getResponseCode() != HttpURLConnection.HTTP_OK) {
return "Server returned HTTP " + connection.getResponseCode()
+ " " + connection.getResponseMessage();
}
// this will be useful to display download percentage
// might be -1: server did not report the length
int fileLength = connection.getContentLength();
// download the file
input = connection.getInputStream();
output = new FileOutputStream("/sdcard/file_name.extension");
byte data[] = new byte[4096];
long total = 0;
int count;
while ((count = input.read(data)) != -1) {
// allow canceling with back button
if (isCancelled()) {
input.close();
return null;
}
total += count;
}
} catch (Exception e) {
return e.toString();
} finally {
try {
if (output != null)
output.close();
if (input != null)
input.close();
} catch (IOException ignored) {
}
if (connection != null)
connection.disconnect();
}
return null;
}
#Override
protected void onPostExecute(String result) {
if (result != null)
Toast.makeText(context,"Download error: "+result, Toast.LENGTH_LONG).show();
else
Toast.makeText(context,"File downloaded", Toast.LENGTH_SHORT).show();
}

install video in local memory and play in there in android

how can I install video from url in local memory and play in there in android? Can you share example code about this? I tried like below but I get error "Sorr,this video cannot played" Video cannot played,but code is installing to video file .I can see it "File Explorer"
public class VideoSaveSDCARD extends Activity {
private VideoView vView;
private static final String TAG = "UpdaterService";
File SDCardRoot;
Handler asyncHandler = new Handler();
String videoLink = "http://hurriyettv.cubecdn.net/2014/11/19/htv_99710_240p.mp4";
String name = "blaa.mp4";
private Updater updater;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder()
.permitAll().build();
StrictMode.setThreadPolicy(policy);
SDCardRoot = new File(getFilesDir() + "/videos");
File[] videos = SDCardRoot.listFiles();
vView = (VideoView) findViewById(R.id.vview);
try {
String[] fileArray = new String[videos.length];
for (int i = 1; i < 2; i++) {
fileArray[i] = videos[i].getName();
Log.i("#Tag:file[1]", "" + fileArray[i]);
vView.requestFocus();
vView.setVideoPath("" + fileArray[i]);
vView.start();
// MediaPlayer pl = new MediaPlayer();
// pl.setDataSource(fi.getFD());
// pl.prepare();
// pl.start();
//
}
} catch (Exception e) {
// TODO: handle exception
}
/*
* Log.i("fileeee", "" + videos[1]);
*
* vView = (VideoView) findViewById(R.id.vview);
*
* // use this to get touch events vView.requestFocus();
*
* // load video from SD card vView.setVideoPath(
* "/data/data/com.example.downlaodvideo/files/videos/blaa.mp4");
*
* // enable this if you want to enable video controllers, such as pause
* // and forward
*
* // plays the movie vView.start();
*/
File SDCardRoot = new File(VideoSaveSDCARD.this.getFilesDir() + "/"
+ "videos");
if (!SDCardRoot.exists()) {
SDCardRoot.mkdir();
}
// deleteDirectory(SDCardRoot);
updater = new Updater();
updater.start();
}
class Updater extends Thread {
#Override
public void run() {
super.run();
downloadFiles(videoLink, name);
}
}
synchronized boolean downloadFiles(String link, String videoName) {
try {
URL url = new URL(link); // you can write here any link
long startTime = System.currentTimeMillis();
Log.d("VideoManager", "download begining");
Log.d("VideoManager", "download url:" + url);
Log.d("VideoManager", "downloaded file name:" + videoName);
/* Open a connection to that URL. */
URLConnection ucon = url.openConnection();
/*
* Define InputStreams to read from the URLConnection.
*/
InputStream is = ucon.getInputStream();
BufferedInputStream bis = new BufferedInputStream(is);
/*
* Read bytes to the Buffer until there is nothing more to read(-1).
*/
ByteArrayBuffer baf = new ByteArrayBuffer(50);
int current = 0;
while ((current = bis.read()) != -1) {
baf.append((byte) current);
}
/* Convert the Bytes read to a String. */
FileOutputStream fos = new FileOutputStream(new File(SDCardRoot,
videoName));
fos.write(baf.toByteArray());
fos.close();
Log.d("VideoManager",
"download ready in"
+ ((System.currentTimeMillis() - startTime) / 1000)
+ " sec");
return true;
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return false;
}
public String getDataFromPortal(String remoteUrl, String myString) {
String data = null;
DefaultHttpClient httpclient = new DefaultHttpClient();
HttpGet httpGet = new HttpGet(remoteUrl + myString);
try {
HttpResponse response1 = httpclient.execute(httpGet);
InputStream is = response1.getEntity().getContent();
data = getStringFromInputStream(is);
return data;
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
Log.d(TAG, "................internet yok catch 1");
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
Log.d(TAG, "................internet yok catch 2");
e.printStackTrace();
}
// The underlying HTTP connection is still held by the response
// object
// to allow the response content to be streamed directly from the
// network socket.
// In order to ensure correct deallocation of system resources
// the user MUST either fully consume the response content or abort
// request
// execution by calling HttpGet#releaseConnection().
return data;
}
private String getStringFromInputStream(InputStream is) {
BufferedReader br = null;
StringBuilder sb = new StringBuilder();
String line;
try {
br = new BufferedReader(new InputStreamReader(is));
while ((line = br.readLine()) != null) {
sb.append(line);
}
} catch (IOException e) {
e.printStackTrace();
} finally {
if (br != null) {
try {
br.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return sb.toString();
}
public static boolean deleteDirectory(File path) {
if (path.exists()) {
File[] files = path.listFiles();
if (files == null) {
return true;
}
for (int i = 0; i < files.length; i++) {
if (files[i].isDirectory()) {
deleteDirectory(files[i]);
} else {
files[i].delete();
}
}
}
return (path.delete());
}
}

public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.d("on create","on create");
setContentView(R.layout.activity_main);
new Asyntask().execute();
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder()
.permitAll().build();
StrictMode.setThreadPolicy(policy);
SDCardRoot = new File("/sdcard/videos");
Log.d("SDCARDGGHGHg",""+SDCardRoot);
File[] videos = SDCardRoot.listFiles();
//Log.d("Videos array ",""+videos[0].getName());
vView = (VideoView) findViewById(R.id.vview);
Log.d("before try cathc","testing");
File SDCardRoot = new File("/sdcard/videos");
Log.d("SDCardRoot",""+SDCardRoot);
if (!SDCardRoot.exists()) {
SDCardRoot.mkdir();
}
}
class Asyntask extends AsyncTask<Void,Void,Void>
{
#Override
protected Void doInBackground(Void... params) {
// TODO Auto-generated method stub
Log.d("In background","in background");
URL url;
try {
url = new URL(videoLink);
long startTime = System.currentTimeMillis();
Log.d("VideoManager", "download begining");
Log.d("VideoManager", "download url:" + url);
Log.d("VideoManager", "downloaded file name:" + name);
/* Open a connection to that URL. */
URLConnection ucon = url.openConnection();
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);
}
FileOutputStream fos;
fos = new FileOutputStream(new File(SDCardRoot,
name));
fos.write(baf.toByteArray());
fos.close();
} catch (MalformedURLException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
catch (Exception e) {
// TODO: handle exception
}
return null;
}
#Override
protected void onPostExecute(Void result) {
// TODO Auto-generated method stub
Log.d("In post","in post");
vView.setVideoPath(SDCardRoot+"/blaa.mp4");
vView.start();
Log.d("android","post execute");
super.onPostExecute(result);
}
}
This will run your code.

program to download zip file from url and extract with the proper directory structures in android

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

I am sharing some url with you first of all you want to down load the file like shown in the following link of stackoverflow
Download a file programatically on Android And then Extract the file from zip like shown in the following link Android Unzipping files Programmatically in android

Getting a file size mismatch with android download code

I'm downloading a file from a server and for some reason i can't determine, the downloaded file size doesn't match the original file size. Here's my code.
private class dl extends AsyncTask<String,Integer,Void>
{
int size;
#Override
protected Void doInBackground(String... arg0) {
// TODO Auto-generated method stub
try{
URL myFileUrl = new URL("http://10.0.2.2:8080/testdlapps/chrome-beta.zip");
HttpURLConnection conn = (HttpURLConnection) myFileUrl.openConnection();
conn.setDoOutput(true);
conn.setRequestMethod("GET");
conn.setDoInput(true);
conn.setConnectTimeout(5000);
conn.connect();
InputStream is = conn.getInputStream();
size = conn.getContentLength();
Log.v("INFO---------------------", "size is " +size);
FileOutputStream fout1 = new FileOutputStream(Environment.getExternalStorageDirectory()+"/"+"xyz.zip");
BufferedOutputStream bos = new BufferedOutputStream(fout1);
byte[] b = new byte[1024]; int i=0, count=0;
while((count = is.read(b)) != -1)
{
bos.write(b,0,count);
i+=count;
publishProgress(i);
Log.v("INFO----------------------------",""+count);
}
fout1.close();
}catch(Exception e){
Log.v("INFO--------------------------","Error!!");
Log.v("INFO--------------------------",e.getMessage());
e.printStackTrace();
}
return null;
}
protected void onProgressUpdate(Integer... progress) {
tv.setText("downloaded " + progress[0] + "/" + size ); //tv is a TextView
}
}
When i run the app, after the download completes, count and size are the same but the actual file size i.e /mnt/sdcard/xyz.zip is always less than size. Any ideas what going wrong?

override onPostExecute and check if actually it finishes, perhaps here a code to download with resume support,
pay attention because if you press back the download may still run:
if (isCancelled())
return false;
in the loop is needed because the close() on the socket will hang on exit without you noticeing it
here is the code:
class DownloaderTask extends AsyncTask<String, Integer, Boolean>
{
private ProgressDialog mProgress;
private Context mContext;
private Long mFileSize;
private Long mDownloaded;
private String mDestFile;
public DownloaderTask(Context context, String path)
{
mContext = context;
mFileSize = 1L;
mDownloaded = 0L;
mDestFile = path;
}
#Override
protected void onPreExecute()
{
mProgress = new ProgressDialog(mContext);
mProgress.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
mProgress.setMessage("Downloading...");
mProgress.setCancelable(true);
mProgress.setCanceledOnTouchOutside(false);
mProgress.setOnCancelListener(new DialogInterface.OnCancelListener()
{
#Override
public void onCancel(DialogInterface dialog)
{
DownloaderTask.this.cancel(true);
}
});
mProgress.show();
}
#Override
protected void onProgressUpdate(Integer... percent)
{
mProgress.setProgress(percent[0]);
}
#Override
protected Boolean doInBackground(String... urls)
{
FileOutputStream fos = null;
BufferedInputStream in = null;
BufferedOutputStream out = null;
AndroidHttpClient mClient = AndroidHttpClient.newInstance("AndroidDownloader");
try
{
HttpResponse response = null;
HttpHead head = new HttpHead(urls[0]);
response = mClient.execute(head);
if (response.getStatusLine().getStatusCode() != HttpStatus.SC_OK)
return false;
Boolean resumable = response.getLastHeader("Accept-Ranges").getValue().equals("bytes");
File file = new File(mDestFile);
mFileSize = (long) Integer.parseInt(response.getLastHeader("Content-Length").getValue());
mDownloaded = file.length();
if (!resumable || (mDownloaded >= mFileSize))
{
Log.e(TAG, "Invalid size / Non resumable - removing file");
file.delete();
mDownloaded = 0L;
}
HttpGet get = new HttpGet(urls[0]);
if (mDownloaded > 0)
{
Log.i(TAG, "Resume download from " + mDownloaded);
get.setHeader("Range", "bytes=" + mDownloaded + "-");
}
response = mClient.execute(get);
if ((response.getStatusLine().getStatusCode() != HttpStatus.SC_OK) && (response.getStatusLine().getStatusCode() != HttpStatus.SC_PARTIAL_CONTENT))
return false;
if (mDownloaded > 0)
publishProgress((int) ((mDownloaded / mFileSize) * 100));
in = new BufferedInputStream(response.getEntity().getContent());
fos = new FileOutputStream(file, true);
out = new BufferedOutputStream(fos);
byte[] buffer = new byte[8192];
int n = 0;
while ((n = in.read(buffer, 0, buffer.length)) != -1)
{
if (isCancelled())
return false;
out.write(buffer, 0, n);
mDownloaded += n;
publishProgress((int) ((mDownloaded / (float) mFileSize) * 100));
}
} catch (Exception e)
{
e.printStackTrace();
return false;
} finally
{
try
{
mClient.close();
if (in != null)
in.close();
if (out != null)
out.close();
if (fos != null)
fos.close();
} catch (IOException e)
{
e.printStackTrace();
}
}
return true;
}
#Override
protected void onCancelled()
{
finish();
}
#Override
protected void onPostExecute(Boolean result)
{
if (mProgress.isShowing())
mProgress.dismiss();
if (result)
// done
else
// error
}
}

If it is a chunked response, the content-length in the header will be a guess at best.