Develop Reference

Android download and play video file simultaneously by using videoView

I had start download file and start playing that file. If the file size is small (less than 15 MB). Following source download and play video perfectly.
If the file size is big (50 MB or more than that),Video playing getting started. For my case,File size is 50 MB,downloaded size is 10 MB and video view is played when the download is started, once the 10 MB size video is played,It waiting for the upcoming bytes. When it gets downloaded, audio only get played. Video frame is not get updated.
public class VideoDemo extends Activity {
private MediaController ctlr;
VideoView videoView = null;
Context context = null;
long totalRead = 0;
int bytesToRead = 50 * 1024;
private int mPlayerPosition;
private File mBufferFile;
#Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
getWindow().setFormat(PixelFormat.TRANSLUCENT);
setContentView(R.layout.main);
videoView = (VideoView) findViewById(R.id.videoview);
ctlr = new MediaController(this);
ctlr.setMediaPlayer(videoView);
videoView.setMediaController(ctlr);
videoView.requestFocus();
new GetYoutubeFile().start();
}
private class GetYoutubeFile extends Thread {
private String mUrl;
private String mFile;
public GetYoutubeFile() {
}
#Override
public void run() {
super.run();
try {
File bufferingDir = new File(
Environment.getExternalStorageDirectory()
+ "/YoutubeBuff");
InputStream stream = getAssets().open("famous.3gp");
if (stream == null)
throw new RuntimeException("stream is null");
File temp = File.createTempFile("test", "mp4");
System.out.println("hi");
temp.deleteOnExit();
String tempPath = temp.getAbsolutePath();
File bufferFile = File.createTempFile("test", "mp4");
BufferedOutputStream bufferOS = new BufferedOutputStream(
new FileOutputStream(bufferFile));
InputStream is = getAssets().open("famous.3gp");
BufferedInputStream bis = new BufferedInputStream(is, 2048);
byte[] buffer = new byte[16384];
int numRead;
boolean started = false;
while ((numRead = bis.read(buffer)) != -1) {
bufferOS.write(buffer, 0, numRead);
bufferOS.flush();
totalRead += numRead;
if (totalRead > 120000 && !started) {
Log.e("Player", "BufferHIT:StartPlay");
setSourceAndStartPlay(bufferFile);
started = true;
}
}
mBufferFile = bufferFile;
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}
public void setSourceAndStartPlay(File bufferFile) {
try {
mPlayerPosition=videoView.getCurrentPosition();
videoView.setVideoPath(bufferFile.getAbsolutePath());
videoView.start();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalStateException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}
public void onCompletion(MediaPlayer mp) {
mPlayerPosition = mp.getCurrentPosition();
try {
mp.reset();
videoView.setVideoPath(new File("mnt/sdcard/YoutubeBuff/"
+ mBufferFile).getAbsolutePath());
mp.seekTo(mPlayerPosition);
videoView.start();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalStateException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}

#Karthick
Your code seems ok!!
just register the OnCompletionListener,OnErrorListener to your VideoView.
videoView.setOnCompletionListener(this);
videoView.setOnErrorListener(this);
so once media player played the buffered stream it will goes to onCompletion or throws an error(Video Can't be played), Which can be handle by again changing seek position and playing through same buffered file.
(Please make sure that video bitrate and transfer rate needs to be equivalent) so buffering and streaming will run simultaneously.
implementations of methods could be like below,
#Override
public boolean onError(MediaPlayer mp, int what, int extra) {
// TODO Auto-generated method stub
mPlayerErrorPos = mp.getCurrentPosition();
mPlayerPosition=mPlayerCompletionPos > mPlayerErrorPos ? mPlayerCompletionPos : mPlayerErrorPos;
try {
mp.reset();
videoView.setVideoPath(video.getAbsolutePath());
videoView.seekTo(mPlayerPosition);
videoView.start();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalStateException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
return true;
}
#Override
public void onCompletion(MediaPlayer mp) {
mPlayerCompletionPos = mp.getCurrentPosition();
}

How to download all files from server to SD-card

I have several files uploaded to my server , now what i am trying to do is i want to download all files one by one and save it in to one folder.
So basically i was trying to do something like [this][1] but some how i am not able to achieve this so i think an alternate way to do it. So i am planning to download all audio file of particular folder of server to my SD-card folder and then i will give path of SD-card to list-view and play that audio.
So basically my question is how can i download all file from server folder to my SD-card folder.
I have below piece of code which is working fine for single file.
public class ServerFileList extends Activity {
Uri uri;
URL urlAudio;
ListView mListView;
ProgressDialog pDialog;
private MediaPlayer mp = new MediaPlayer();
private List<String> myList = new ArrayList<String>();
#Override
protected void onCreate(Bundle savedInstanceState) {
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
super.onCreate(savedInstanceState);
setContentView(R.layout.serverfilelist);
mListView = (ListView) findViewById(R.id.listAudio);
// new getAudiofromServer().execute();
new downloadAudio().execute();
mListView.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
playSong(urlAudio + myList.get(position));
}
});
}
public void updateProgress(int currentSize, int totalSize) {
TextView mTextView = new TextView(ServerFileList.this);
mTextView.setText(Long.toString((currentSize / totalSize) * 100) + "%");
}
private void playSong(String songPath) {
try {
mp.reset();
mp.setDataSource(songPath);
mp.prepare();
mp.start();
} catch (IOException e) {
Log.v(getString(R.string.app_name), e.getMessage());
}
}
class downloadAudio extends AsyncTask<String, String, String> {
#Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(ServerFileList.this);
pDialog.setMessage("Downloading File list from server, Please wait...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(false);
pDialog.show();
}
#Override
protected String doInBackground(String... arg0) {
// set the download URL, a url that points to a file on the internet
// this is the file to be downloaded
URL url = null;
try {
url = new URL("http://server/folder/uploadAudio/abcd.mp3");
} catch (MalformedURLException e3) {
// TODO Auto-generated catch block
e3.printStackTrace();
}
// create the new connection
HttpURLConnection urlConnection = null;
try {
urlConnection = (HttpURLConnection) url.openConnection();
} catch (IOException e5) {
// TODO Auto-generated catch block
e5.printStackTrace();
}
// set up some things on the connection
try {
urlConnection.setRequestMethod("GET");
} catch (ProtocolException e4) {
// TODO Auto-generated catch block
e4.printStackTrace();
}
urlConnection.setDoOutput(true);
// and connect!
try {
urlConnection.connect();
} catch (IOException e3) {
// TODO Auto-generated catch block
e3.printStackTrace();
}
// set the path where we want to save the file
// in this case, going to save it on the root directory of the
// sd card.
String MEDIA_PATH = new String(
Environment.getExternalStorageDirectory()
+ "/newDirectory/");
File SDCardRoot = new File(MEDIA_PATH);
if (!SDCardRoot.exists()) {
SDCardRoot.mkdir();
}
// create a new file, specifying the path, and the filename
// which we want to save the file as.
File file = new File(SDCardRoot, System.currentTimeMillis()
+ ".mp3");
// this will be used to write the downloaded data into the file we
// created
FileOutputStream fileOutput = null;
try {
fileOutput = new FileOutputStream(file);
} catch (FileNotFoundException e2) {
// TODO Auto-generated catch block
e2.printStackTrace();
}
// this will be used in reading the data from the internet
InputStream inputStream = null;
try {
inputStream = urlConnection.getInputStream();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
// this is the total size of the file
int totalSize = urlConnection.getContentLength();
// variable to store total downloaded bytes
int downloadedSize = 0;
// create a buffer...
byte[] buffer = new byte[1024];
int bufferLength = 0; // used to store a temporary size of the
// buffer
// now, read through the input buffer and write the contents to the
// file
try {
while ((bufferLength = inputStream.read(buffer)) > 0) {
// add the data in the buffer to the file in the file output
// stream (the file on the sd card
fileOutput.write(buffer, 0, bufferLength);
// add up the size so we know how much is downloaded
downloadedSize += bufferLength;
// this is where you would do something to report the
// prgress,
// like this maybe
updateProgress(downloadedSize, totalSize);
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
// close the output stream when done
try {
fileOutput.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
// catch some possible errors...
}
protected void onPostExecute(String file_url) {
if (pDialog.isShowing()) {
pDialog.dismiss();
}
}
}
class getAudiofromServer extends AsyncTask<String, String, String> {
#Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(ServerFileList.this);
pDialog.setMessage("Getting File list from server, Please wait...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(false);
pDialog.show();
}
#SuppressWarnings("unchecked")
#Override
protected String doInBackground(String... arg0) {
try {
urlAudio = new URL("http://server/folder/uploadAudio");
} catch (MalformedURLException e) {
e.printStackTrace();
}
ApacheURLLister lister1 = new ApacheURLLister();
try {
myList = lister1.listAll(urlAudio);
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
protected void onPostExecute(String file_url) {
if (pDialog.isShowing()) {
pDialog.dismiss();
}
ArrayAdapter<String> adapter = new ArrayAdapter<String>(
ServerFileList.this, android.R.layout.simple_list_item_1,
myList);
adapter.notifyDataSetChanged();
mListView.setAdapter(adapter);
mListView.setChoiceMode(ListView.CHOICE_MODE_SINGLE);
mListView.setCacheColorHint(Color.TRANSPARENT);
}
}
}

Try follow steps,
Write a server side component which will return back the list of the files in the directory in which all the audio files are hosted.
In your downloadAudio class, instead of downloading a file, initially make a call to the component described above to get the list.
Move the code which you have written in an function which will take String argument.
Loop on the url list from step 2 and call function in step 3 with parameter as current element of url list.
Keep all checks and balances to ensure all the files are downloaded.
Your issue is more of design issue then programming.

I have solved the problem by adding ivy jar file as a library and then added following code.
try {
urlAudio = new URL("http://server/folder/uploadAudio");
} catch (MalformedURLException e) {
e.printStackTrace();
}
ApacheURLLister lister1 = new ApacheURLLister();
try {
myList = lister1.listAll(urlAudio);
} catch (IOException e) {
e.printStackTrace();
}
return null;

Reading FTP File with Android

I am using FTP to upload a file. This works great. This file contains information what the app should do.
So I am doing the following:
1) Download the file with Apache FTP Client (seems to work fine)
2) Try to read out the file with a BufferedReader and FileReader.
The problem:
I get a NullPointerException while reading the file. I guess that this is a timing problem.
The code has this structure:
...
getFile().execute();
BufferedReader br = new BufferedReader(...);
How can I solve this problem?
I have to use a seperate Thread (AsyncTask) to download the file because otherwise it will throw a NetworkOnMainThread Exception.
But how can I wait until the file is completely downloaded without freezing the UI?
I cannot use the BufferedReader inside AsyncTask because I use GUI elements and I have to run the interactions on the GUI Thread, but I have no access to it from AsyncTask. RunOnUiThread does not work as well because I am inside a BroadcastReceiver.
Some code:
private class GetTask extends AsyncTask{
public GetTask(){
}
#Override
protected Object doInBackground(Object... arg0) {
FTPClient client = new FTPClient();
try {
client.connect("*****");
}
catch (SocketException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
client.login("*****", "*****");
}
catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
FileOutputStream fos = null;
try {
fos = new FileOutputStream( "/sdcard/"+userID+".task" );
}
catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
resultOk &= client.retrieveFile( userID+".task", fos );
}
catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
Thread.sleep(5000);
}
catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}/**
try {
client.deleteFile(userID+".task");
}
catch (IOException e2) {
// TODO Auto-generated catch block
e2.printStackTrace();
}
**/
try {
client.disconnect();
}
catch (IOException e2) {
// TODO Auto-generated catch block
e2.printStackTrace();
}
return null;
}
}
The Broadcastreceiver class:
public class LiveAction extends BroadcastReceiver {
...
private Context cont;
FileReader fr = null;
BufferedReader br;
#Override
public void onReceive(Context context, Intent intent)
{
cont = context;
...
new GetTask().execute();
try {
Thread.sleep(3000);
}
catch (InterruptedException e2) {
// TODO Auto-generated catch block
e2.printStackTrace();
}
try {
fr = new FileReader("/sdcard/"+userID+".task");
}
catch (FileNotFoundException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
br = new BufferedReader(fr)
String strline = "";
try {
while ((strline = br.readLine()) != null){
if(strline.equals("taskone")){
//Some GUI Tasks
}
....
This is the relevant code.

I think the best approach would be to read the file's contents from the doInBackground inside the AsyncTask and then output an object which contains the info you need on the onPostExecute method of the async stask and then manipulate your UI.
private AsyncTask<String,Void,FileInfo> getFile(){
return new AsyncTask<String,Void,FileInfo>{
protected FileInfo doInBackground(String url){
FileInfo finfo = new FileInfo(); // FileInfo is a custom object that you need to define that has all the stuff that you need from the file you just downloaded
// Fill the custom file info object with the stuff you need from the file
return finfo;
}
protected void onPostExecute(FileInfo finfo) {
// Manipulate UI with contents of file info
}
};
}
getFile().execute();
Another option is to call another AsyncTask from onPostExecute that does the file parsing but I would not recommend it

I would try some thing like this:
private class GetTask extends AsyncTask{
LiveAction liveAction;
public GetTask(LiveAction liveAction){
this.liveAction = liveAction;
}
...
#Override
protected void onPostExecute(String result) {
liveAction.heyImDoneWithdownloading();
}
}
Ps: why the Thread.sleep(5000)?
public class LiveAction extends BroadcastReceiver {
...
public void heyImDoneWithdownloading(){
//all the things you want to do on the ui thread
}
}

Concatenate two audio files and play resulting file

I am really facing problem from last couple of days but I am not able to find the exact solution please help me.
I want to merge two .mp3 or any audio file and play final single one mp3 file. But when I am combine two file the final file size is ok but when I am trying to play it just play first file, I have tried this with SequenceInputStream or byte array but I am not able to get exact result please help me.
My code is the following:
public class MerginFileHere extends Activity {
public ArrayList<String> audNames;
byte fileContent[];
byte fileContent1[];
FileInputStream ins,ins1;
FileOutputStream fos = null;
String combined_file_stored_path = Environment
.getExternalStorageDirectory().getPath()
+ "/AudioRecorder/final.mp3";
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
audNames = new ArrayList<String>();
String file1 = Environment.getExternalStorageDirectory().getPath()
+ "/AudioRecorder/one.mp3";
String file2 = Environment.getExternalStorageDirectory().getPath()
+ "/AudioRecorder/two.mp3";
File file = new File(Environment.getExternalStorageDirectory()
.getPath() + "/AudioRecorder/" + "final.mp3");
try {
file.createNewFile();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
audNames.add(file1);
audNames.add(file2);
Button btn = (Button) findViewById(R.id.clickme);
btn.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
createCombineRecFile();
}
});
}
public void createCombineRecFile() {
// String combined_file_stored_path = // File path in String to store
// recorded audio
try {
fos = new FileOutputStream(combined_file_stored_path, true);
} catch (FileNotFoundException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
try {
File f = new File(audNames.get(0));
File f1 = new File(audNames.get(1));
Log.i("Record Message", "File Length=========>>>" + f.length()+"------------->"+f1.length());
fileContent = new byte[(int) f.length()];
ins = new FileInputStream(audNames.get(0));
int r = ins.read(fileContent);// Reads the file content as byte
fileContent1 = new byte[(int) f1.length()];
ins1 = new FileInputStream(audNames.get(1));
int r1 = ins1.read(fileContent1);// Reads the file content as byte
// from the list.
Log.i("Record Message", "Number Of Bytes Readed=====>>>" + r);
//fos.write(fileContent1);// Write the byte into the combine file.
byte[] combined = new byte[fileContent.length + fileContent1.length];
for (int i = 0; i < combined.length; ++i)
{
combined[i] = i < fileContent.length ? fileContent[i] : fileContent1[i - fileContent.length];
}
fos.write(combined);
//fos.write(fileContent1);*
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
fos.close();
Log.v("Record Message", "===== Combine File Closed =====");
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}

I already published an app with this function... try my method using SequenceInputStream, in my app I just merge 17 MP3 files in one and play it using the JNI Library MPG123, but I tested the file using MediaPlayer without problems.
This code isn't the best, but it works...
private void mergeSongs(File mergedFile,File...mp3Files){
FileInputStream fisToFinal = null;
FileOutputStream fos = null;
try {
fos = new FileOutputStream(mergedFile);
fisToFinal = new FileInputStream(mergedFile);
for(File mp3File:mp3Files){
if(!mp3File.exists())
continue;
FileInputStream fisSong = new FileInputStream(mp3File);
SequenceInputStream sis = new SequenceInputStream(fisToFinal, fisSong);
byte[] buf = new byte[1024];
try {
for (int readNum; (readNum = fisSong.read(buf)) != -1;)
fos.write(buf, 0, readNum);
} finally {
if(fisSong!=null){
fisSong.close();
}
if(sis!=null){
sis.close();
}
}
}
} catch (IOException e) {
e.printStackTrace();
}finally{
try {
if(fos!=null){
fos.flush();
fos.close();
}
if(fisToFinal!=null){
fisToFinal.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}

Mp3 files are some frames.
You can concatenate these files by appending the streams to each other if and only if the bit rate and sample rate of your files are same.
If not, the first file plays because it has truly true encoding but the second file can not decode to an true mp3 file.
Suggestion: convert your files with some specific bit rate and sample rate, then use your function.

How to play .pls in android?

Android Media Player:
I'm able to play .mp3 file from URL.
While playing .pls getting eroor.
Code:
try{
String url=".pls url";
mediaPlayer = new MediaPlayer();
mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
mediaPlayer.setDataSource(url);
mediaPlayer.prepare();
mediaPlayer.start();
}catch(Exception
System.out.println("## Exception while playing: "+e);
mediaPlayer .release();
mediaPlayer = null;
}
Error:
09-12 12:44:04.026: E/MediaPlayer(704): error (1, -2147483648)
09-12 12:44:04.026: I/System.out(704): ## Exception while playing: java.io.IOException: Prepare failed.: status=0x1

If by pls you mean playlist information file, then mediaplayer cannot handle pls files.
.pls files are not media files. So you cannot play .pls files. Usually .pls are handled by the app and app extracts the information from the pls file and play the music file to which pls is pointing to.

String musicUlrPath;
LinkedList<String> streamingUrlList;
streamingUrlList=new LinkedList<String>();
ExecuteArrayList executeArrayList=new ExecuteArrayList();
executeArrayList.execute("blank");
class ExecuteArrayList extends AsyncTask<String, String, String>
{
#Override
protected String doInBackground(String... params) {
// TODO Auto-generated method stub
try {
streamingUrlList=getStreamingUrl(pathFromJson);//you are geting path during json response
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
#Override
protected void onPostExecute(String result) {
// TODO Auto-generated method stub
musicUlrPath=(streamingUrlList.get(0));
}
}
public LinkedList<String> getStreamingUrl(String url) {
Log.i(LOGTAG, "get streaming url");
final BufferedReader br;
String murl = null;
LinkedList<String> murls = null;
try {
URLConnection mUrl = new URL(url).openConnection();
br = new BufferedReader(
new InputStreamReader(mUrl.getInputStream()));
murls = new LinkedList<String>();
while (true) {
try {
String line = br.readLine();
if (line == null) {
break;
}
murl = parseLine(line);
if (murl != null && !murl.equals("")) {
murls.add(murl);
}
} catch (IOException e) {
e.printStackTrace();
}
}
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Log.i(LOGTAG, "url to stream :" + murl);
return murls;
}
private String parseLine(String line) {
if (line == null) {
return null;
}
String trimmed = line.trim();
if (trimmed.indexOf("http") >= 0) {
return trimmed.substring(trimmed.indexOf("http"));
}
return "";
}
now set the extracted path
mediaPlayer.setDataSource(musicUlrPath);

Extract pls file in notepad , It will show like this
playlist]
File1=Alternative\everclear -URL
Title1=Everclear - So Much For The Afterglow
Length1=233
File2=Comedy\Weird Al - Everything You Know Is Wrong.mp3
.
.
NumberOfEntries=5
Version=2.
Use that URL in Media player.It will work.