Not very easy to explain:
I have this app for streaming online radio. The problem was first with m3u format (which android somehow cannot normally stream like pls), so I have to parse the url with this ParserM3UToURL (that I found somewhere)... like this:
Uri u = Uri.parse(ParserM3UToURL.parse(STREAM_URL, sdkVersion, c));
player = MediaPlayer.create(c, u);
Mostly it works ok but it has one bug...
I'm testing this on two devices one old 2.2.2. (api level 17), other 4.3 (api level 23). Older device works fine. It can stream radio over wifi or mobile data, but the newer device has some problem with streaming over mobile data (on wifi it works ok). The application crashes because the parse function returns null: http://pastebin.com/ghbAqGzM
And I assume there are many more phones with 4.x than 2.x android. Which of course is very painful for me. Somehow I have to fix this.. So I really hope somebody will have some clue about this. I hope my explanation was not to confusing...
This is the ParserM3UToURL.parse() function:
public static String parse(String paramString, int sdkVersion, Context c)
{
try
{
StrictModeWrapper.init(c);
HttpURLConnection localHttpURLConnection = (HttpURLConnection)new URL(paramString).openConnection();
InputStream localInputStream = localHttpURLConnection.getInputStream();
BufferedReader localBufferedReader = new BufferedReader(new InputStreamReader(localInputStream));
StringBuffer localStringBuffer = new StringBuffer();
while (true)
{
String str = localBufferedReader.readLine();
if (str == null)
{
localHttpURLConnection.disconnect();
localBufferedReader.close();
localInputStream.close();
break;
}
if (str.contains("http"))
{
localHttpURLConnection.disconnect();
localBufferedReader.close();
localInputStream.close();
return str;
}
localStringBuffer.append(str);
}
}
catch (Exception e)
{
e.printStackTrace();
}
return null;
}
Below is what i worked on to stream radio (m3Urls). The example below uses a service. When the service is started, the url is parsed. Note that in the onPostExecute, parsed file is prepared. Once the file is prepared(completed buffering), the file is played/started and stopped upon completion.
public class BackgroundRadioService extends Service implements
OnCompletionListener, OnPreparedListener{
MediaPlayer mediaPlayer;
#Override
public void onCreate() {
mediaPlayer = new MediaPlayer();
mediaPlayer.setOnCompletionListener(this);
mediaPlayer.setOnPreparedListener(this);
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
parseM3uUrlAndPrepare("http://listen.radionomy.com/andalousse.m3u");
return START_STICKY;
}
private void parseM3uUrlAndPrepare(final String url){
AsyncTask<String, Integer, String> asyn = new AsyncTask<String, Integer, String>(){
HttpClient httpClient;
HttpGet getRequest;
HttpResponse httpResponse = null;
String filePath = "";
#Override
protected void onPreExecute() {
super.onPreExecute();
httpClient = new DefaultHttpClient();
getRequest = new HttpGet(url);
}
#Override
protected String doInBackground(String... params) {
try {
httpResponse = httpClient.execute(getRequest);
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
if(httpResponse != null)
if (httpResponse.getStatusLine().getStatusCode() != HttpStatus.SC_OK) {
// ERROR MESSAGE
} else {
InputStream inputStream = null;
try {
inputStream = httpResponse.getEntity().getContent();
} catch (IllegalStateException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
String line;
try {
while ((line = bufferedReader.readLine()) != null) {
//Log.v("PLAYLISTLINE", "ORIG: " + line);
if (line.startsWith("#")) { // Metadata
} else if (line.length() > 0) {
filePath = "";
if (line.startsWith("http://")) { // Assume it's a full URL
filePath = line;
} else { // Assume it's relative
try{
filePath = getRequest.getURI().resolve(line).toString();
}catch(IllegalArgumentException e){
}catch(Exception e){
}
}
}
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
inputStream.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
return filePath;
}
#Override
protected void onPostExecute(String filePath) {
try {
mediaPlayer.setDataSource(filePath);
mediaPlayer.prepareAsync(); //this will prepare file a.k.a buffering
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalStateException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
};
asyn.execute("");
}
#Override
public void onPrepared(MediaPlayer mp) {
// TODO Auto-generated method stub
mediaPlayer.start();
}
#Override
public void onCompletion(MediaPlayer mp) {
mediaPlayer.stop();
}
}//end of Service class declaration
Note: This ignores playlists hence assumes the m3u parsed will return only one file. Let me know if you would like to handle playlists so I modify my answer :)
I solved it thanks to this question's comments: POST request failing when in 3G
The problem was actually with proxies on 3G. So if proxies are disabled, no weird http requests.
I modified my code a little. Thanks to Nana's answer I no longer need a m3u parser. I also no longer use HttpClient but HttpURLConnection instead. So when calling URL.openConnection() I add the Proxy.NO_PROXY parameter to that function and bam!
So the solution is "use HttpURLConnection not HttpClient and add NO_PROXY parameter":
conn = (HttpURLConnection) the_url.openConnection( Proxy.NO_PROXY );
Related
when the connection is so low i get an exception " failed to connect to : http ......", this is my code, can any one please helps me to avoid the exception.
when the connection is so low i get an exception " failed to connect to : http ......", this is my code, can any one please helps me to avoid the exception
private void parseM3uUrlAndPrepare_new(final String url) {
AsyncTask<String, Integer, String> asyn = new AsyncTask<String, Integer, String>(){
URL the_url;
HttpURLConnection conn;
String filePath = "";
InputStream inputStream;
HttpGet getRequest;
#Override
protected void onPreExecute() {
super.onPreExecute();
try {
the_url = new URL(url);
conn = (HttpURLConnection) the_url.openConnection(Proxy.NO_PROXY);
getRequest = new HttpGet(url);
}
catch (MalformedURLException e) {
e.printStackTrace();
}
catch (IOException e) {
e.printStackTrace();
}
}
#Override
protected String doInBackground(String... params) {
if(conn != null) {
try {
inputStream = new BufferedInputStream(conn.getInputStream());
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
String line;
while ((line = bufferedReader.readLine()) != null) {
if (line.startsWith("#")) {
}
else if (line.length() > 0) {
filePath = "";
if (line.startsWith("http://")) { // Assume it's a full URL
filePath = line;
}
else { // Assume it's relative
try{
filePath = getRequest.getURI().resolve(line).toString();
}
catch(IllegalArgumentException e){
e.printStackTrace();
}
catch(Exception e){
e.printStackTrace();
}
}
}
}
}
catch (Exception e) {
e.printStackTrace();
}
try {
inputStream.close();
}
catch (IOException e) {
e.printStackTrace();
}
}
return filePath;
}
#Override
protected void onPostExecute(String filePath) {
try {
mediaPlayer.setDataSource(filePath);
DATA_SET = true;
mediaPlayer.prepareAsync(); //this will prepare file a.k.a buffering
}
catch (IllegalArgumentException e) {
e.printStackTrace();
}
catch (IllegalStateException e) {
e.printStackTrace();
}
catch (IOException e) {
e.printStackTrace();
}
}
};
asyn.execute("");
}
Maybe the problem is the BufferedInputStream. I wrote this code (a long time ago) if you want to try it.
Give an input stream to the fonction and let it work.
import java.io.InputStream;
import java.util.Scanner;
/**
* Created by badetitou.
*/
public class ReadIt {
public static String ReadIt(InputStream is){
return new Scanner(is,"UTF-8").useDelimiter("").next();
}
}
I have a method that need to update its status periodically to the server.
I am using AsyncTask to run the HTTP call in background.
PROBLEM: In onPostExecute method upon checking AsyncTask.getStatus, It show the previous task still running which is causing the error.
ERROR: java.lang.IllegalStateException: Cannot execute task: the task is already running.
DIFFERENT STRATEGIES USED TO SOLVE THE PROBLEM BUT NONE IS WORKING
1. Before Relaunching AsyncTask, checked the status, it is showing the thread is RUNNING.
2. Called the AsyncTask.cancel(true), immediately before calling the AsyncTask.execute if it is still running. It turns out AsyncTask still RUNNING and taking more than 3 mins to get cancel.
NOTE: I have checked many similar questions here, but haven't found helpful.
I would really appredicae if any one of you guys give me an example to solve this issue, Thanks a Million in advance......
public class MainActivity extends Activity implements AsyncResponse{
ConnectServer asyncTask =new ConnectServer();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
asyncTask.delegate = this;
setContentView(R.layout.activity_main);
//Start updating server using below method
loop();
}
public void processFinish(String output){
//this you will received result fired from async class of onPostExecute(result) method.
//Log.v(TAG, output);
if(output != null){
//not using this at this point
}
}
//Method that will call Async method to reach server
public void loop(){
TextView b = (TextView) findViewById(R.id.mField);
String str;
try {
str = asyncTask.execute(true).get();
b.setText(str);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ExecutionException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
// START SERVER CONNECTION
class ConnectServer extends AsyncTask<Boolean, String, String> {
public AsyncResponse delegate=null;
public int i = 0;
private Activity activity;
public void MyAsyncTask(Activity activity) {
this.activity = activity;
}
#Override
protected String doInBackground(Boolean... params) {
String result = null;
StringBuilder sb = new StringBuilder();
try {
// http post
HttpClient httpclient = new DefaultHttpClient();
HttpGet httppost = new HttpGet("http://192.168.0.21:8080");
HttpResponse response = httpclient.execute(httppost);
if (response.getStatusLine().getStatusCode() != 200) {
Log.d("GPSApp", "Server encountered an error");
}
BufferedReader reader = new BufferedReader(new InputStreamReader(response.getEntity().getContent(), "UTF8"));
sb = new StringBuilder();
sb.append(reader.readLine() + "\n");
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
result = sb.toString();
} catch (Exception e) {
Log.e("log_tag", "Error converting result " + e.toString());
}
return result;
}
#Override
protected void onPostExecute(String result) {
TextView mField = (TextView) findViewById(R.id.mField);
mField.setText(result+i);
try {
Thread.sleep(10000);
//asyncTask =new ConnectServer();
i++;
String str = asyncTask.execute(true).get();
mField.setText(str+i);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ExecutionException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
protected void onPreExecute() {}
}
}
Call getStatus() to get the status of AsyncTask. If the status is AsyncTask.Status.RUNNING, cancel it.
I am trying to get an HttpResponse in xml but Im not getting the whole response, what is courious is that if I loop the request the response ends in different parts but is never full.
I use the same code to request things from different Urls but I only get problems with one.
Here is the code of the AsyncTask:
public class NetworkTask extends AsyncTask<String, Void, HttpResponse> {
private AsyncTaskListener listener;
#Override
protected HttpResponse doInBackground(String... params) {
String link = params[0];
HttpGet request = new HttpGet(link);
AndroidHttpClient client = AndroidHttpClient.newInstance("Android");
try {
HttpResponse httpResponse = client.execute(request).;
return httpResponse;
} catch (IOException e) {
e.printStackTrace();
return null;
} finally {
client.close();
}
}
#Override
protected void onPostExecute(HttpResponse result) {
if (result != null){
try {
String sRes = EntityUtils.toString(result.getEntity());
listener.onNTCompleted(sRes);
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
public NetworkTask(AsyncTaskListener listener){
this.listener=listener;
}
}
I am not sure if this helps you but you have a problem because EntityUtils.toString() reads data from the network stream, which should not be done on UI thread (onPostExecute). Try moving EntityUtils.toString() to doInBackground() first. This may not help solve your problem, but it is the right thing to do.
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.
I'm trying to experiment the HttpURLConnection to get some XML from a server.
This is the code I'm using:
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
String myConn = this.getString(R.string.myConnection);
HttpURLConnection httpConnection = null;
InputStream in = null;
try {
URL mySite = new URL(myConn);
URLConnection connection = mySite.openConnection();
TextView tv = (TextView)this.findViewById(R.id.myTextView);
httpConnection = (HttpURLConnection)connection;
in = httpConnection.getInputStream();
String myString = convertStreamToString(in);
tv.setText(myString);
} catch (IOException ex) {} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
finally {
httpConnection.disconnect();
try {
in.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
On the emulator this code works and i can see the stream on the TextView...
On my device I can't see anything (3g connection)..
Did I miss something?
thanks
By using AsyncTask You can solve this problem.