Develop Reference

In Unity, how can I populate this allRoundData array from a json file in a way that works on Android?

I am new to Unity and Android development, but please do not mark this as a duplicate - I've looked all over the stacks for an answer to this, but similar topics and questions haven't yielded any working solutions, or are wanting on details, or outdated, or seem not to fit my specific need.
Ok, I have a quiz app built from following part 1 & 2 of this tutorial. That link contains all the source files anyone might need for reference, and everything works fine on ios and in the unity editor, fyi.
The trouble is with the loadGameData function from the DataController script in Android. Again, everything works fine in iOS and the unity editor, but when I make an Android sdk, the quiz is blank and the console says the data couldn't be loaded.
Here is how the function is currently written (full file in tutorial link):
private void LoadGameData ()
{
string filePath = Path.Combine (Application.streamingAssetsPath, gameDataFileName);
if (File.Exists (result))
{
string dataAsJson = File.ReadAllText (result);
GameData loadedData = JsonUtility.FromJson<GameData> (dataAsJson);
allRoundData = loadedData.allRoundData;
} // #if(File.Exists...
else
{
Debug.LogError ("Cannot load game data!");
} // #else
} // #LoadGameData
If you check the same tutorial on youtube, you'll see lots of people have noted the same problem with the Android build and have been left unanswered. Same goes with unity forums - that's one reason why I don't think this question is a duplicate and could be helpful to others in a similar situation.
I've found that Android has always been sorta tricky with this and that there used to different ways of accessing a file based on platform, but these days "Application.streamingAssetsPath" should find the streaming assets directory on any platform, even Android.
What I've also learned is that in android, even if the path is correct, the file is compressed and will only return a url. So the url needs to be converted using unity's WWW class. I get that, but as of yet, I haven't been able to re-write my loadGameData function to work properly and load the allRoundData array.
Here's an example of some things I've tried:
IEnumerator androidData()
{
string filePath = Path.Combine (Application.streamingAssetsPath, gameDataFileName);
if (filePath.Contains("://"))
{
WWW www = new WWW(filePath);
yield return www;
result = www.text;
} // #if(filePath.Contains
} // #androidData
private void LoadGameData ()
{
androidData();
if (File.Exists (result))
{
string dataAsJson = File.ReadAllText (result);
GameData loadedData = JsonUtility.FromJson<GameData> (dataAsJson);
allRoundData = loadedData.allRoundData;
} // #if(File.Exists...
else
{
Debug.LogError ("Cannot load game data!");
} // #else
} // #LoadGameData
I know I'm close, and this is probably simple -- but I just can't seem to get to the finish line on this. Can some one help me figure out how to write the loadGameData function so it will load this allRoundData array on android?
An example code would be awesome and much appreciated, not just by me, but I'm sure many others would appreciate it also - Thank you!
UPDATE:
Based on the first answer, I've tested some code that works on the unity editor, but crashes in Android. In the Unity editor, I get the "file already exists" message. Here is the code I've tested:
Already had: private string gameDataFileName = "data.json";
I added the copyFile call above loadGameDate in Start() and wrote the copy file and loadGameData functions like so ..
int copyFileToPersistentDataPath(string gameDataFileName)
{
string persistentPath = Application.persistentDataPath + "/" + gameDataFileName;
try
{
//Copy only if gameDataFileName does not exist
if (!System.IO.File.Exists(persistentPath))
{
string path = System.IO.Path.Combine(Application.streamingAssetsPath, gameDataFileName);
WWW www = new WWW(path);
while (!www.isDone) { }
System.IO.File.WriteAllBytes(persistentPath, www.bytes);
Debug.Log(gameDataFileName + " Successfully Copied File to " + persistentPath);
return 1;
}
else
{
Debug.Log(gameDataFileName + " File already exist here. There is no need to copy it again");
return 0;
}
}
catch (Exception e)
{
Debug.Log(gameDataFileName + " Failed To Copy File. Reason: " + e.Message);
return -1;
}
}
private void LoadGameData ()
{
string tempPath = Path.Combine(Application.persistentDataPath, gameDataFileName);
string dataAsJson = File.ReadAllText(tempPath);
GameData loadedData = JsonUtility.FromJson<GameData>(dataAsJson);
allRoundData = loadedData.allRoundData;
} // #LoadGameData
This works with or without the call to copy the file in the editor, but crashes either way in Android.

I ended up putting the files in a Resources folder and going the resources.load a json file into a text asset and throw that into a string to parse route. I now have two different load functions, one that works in ios etc. and one that works in android. Here is the android function (the resourcesGameDataFile does not have the .json extension):
public void LoadDataForAndroid()
{
TextAsset dataFile = Resources.Load(resourcesGameDataFile) as TextAsset;
string dataAsJson = dataFile.ToString();
GameData loadedData = JsonUtility.FromJson<GameData>(dataAsJson);
allRoundData = loadedData.allRoundData;
Debug.Log ("Android data loaded with" + resourcesGameDataFile);
} // #LoadDataForAndroid
And this works in the unity editor and in Bluestacks (android simulator).

As for loading and saving games, this is a duplicate. I marked and remove this as a duplicate because the answer in the duplicated questions did not explain how to read from the StreamingAssets folder. It only talked about saving and loading data.
Make sure that Write Permission is set to External (SDCard).
The first thing to do is to copy the file from StreamingAssets to the persistentDataPath location.
I've found reading data from Application.streamingAssetsPath problematic but I use two methods to solve this.
int copyFileToPersistentDataPath(string fileNameWithExtensionName)
{
string persistentPath = Application.persistentDataPath + "/" + fileNameWithExtensionName;
try
{
//Copy only if fileNameWithExtensionName does not exist
if (!System.IO.File.Exists(persistentPath))
{
string path = System.IO.Path.Combine(Application.streamingAssetsPath, fileNameWithExtensionName);
WWW www = new WWW(path);
while (!www.isDone) { }
System.IO.File.WriteAllBytes(persistentPath, www.bytes);
Debug.Log(fileNameWithExtensionName + " Successfully Copied File to " + persistentPath);
return 1;
}
else
{
Debug.Log(fileNameWithExtensionName + " File already exist here. There is no need to copy it again");
return 0;
}
}
catch (Exception e)
{
Debug.Log(fileNameWithExtensionName + " Failed To Copy File. Reason: " + e.Message);
return -1;
}
}
If that does not work for you, use the method with WebClient below:
void copyFileToPersistentDataPath(string fileNameWithExtensionName)
{
string path = System.IO.Path.Combine(Application.streamingAssetsPath, fileNameWithExtensionName);
string persistentPath = Application.persistentDataPath + "/" + fileNameWithExtensionName;
Debug.Log("Dir: " + persistentPath);
WebClient webClient = new WebClient();
webClient.Proxy = null;
webClient.DownloadFileCompleted += new AsyncCompletedEventHandler(OnDownloadComplete);
webClient.DownloadProgressChanged += new DownloadProgressChangedEventHandler(OnUpdateDownloadProgress);
Uri uri = new Uri(path);
webClient.DownloadFileAsync(uri, persistentPath);
}
void OnDownloadComplete(object sender, AsyncCompletedEventArgs e)
{
Debug.Log("Finished Downloading: " + e.Error.Message);
}
void OnUpdateDownloadProgress(object sender, DownloadProgressChangedEventArgs e)
{
Debug.Log("Uploading Progreess: " + e.ProgressPercentage);
}
File Copy Usage:
copyFileToPersistentDataPath("yourFileName.txt");
After copying the file, you can then read and convert it to Json like this:
string fileNameWithExtensionName = "questionfile.txt";
string tempPath = Path.Combine(Application.persistentDataPath, fileNameWithExtensionName);
string dataAsJson = File.ReadAllText(fileNameWithExtensionName);
GameData loadedData = JsonUtility.FromJson<GameData>(dataAsJson);

Can't read lines from file by using StreamReader on Unity3d (Android)

I need to read a text stream by using StreamReader from file on android platform. File is about 100k lines, so even editor is getting stuck if i try to load it all to TextAsset or if i use WWW.
I simply need to read that file line by line without loading it all to a string. Then i'll do a tree generation from the lines that i got from the file. (But probably that part doesn't matter, i just need help on file reading part.)
I'm giving the code that i wrote down below. It works perfectly on editor, but fails on android.
I would be glad if anyone tell me, what am i missing.
(ps. english is not my native and this is my first question on the site. so sorry for the any mistakes that i may have done.)
private bool Load(string fileName)
{
try
{
string line;
string path = Application.streamingAssetsPath +"/";
StreamReader theReader = new StreamReader(path + fileName +".txt", Encoding.UTF8);
using (theReader)
{
{
line = theReader.ReadLine();
linesRead++;
if (line != null)
{
tree.AddWord(line);
}
}
while (line != null);
theReader.Close();
return true;
}
}
catch (IOException e)
{
Debug.Log("{0}\n" + e.Message);
exception = e.Message;
return false;
}
}

You can't use Application.streamingAssetsPath as a path on Android because streaming assets are stored within the JAR file with the application.
From http://docs.unity3d.com/Manual/StreamingAssets.html:
Note that on Android, the files are contained within a compressed .jar
file (which is essentially the same format as standard zip-compressed
files). This means that if you do not use Unity’s WWW class to
retrieve the file then you will need to use additional software to see
inside the .jar archive and obtain the file.
Use WWW like this in a coroutine:
WWW data = new WWW(Application.streamingAssetsPath + "/" + fileName);
yield return data;
if(string.IsNullOrEmpty(data.error))
{
content = data.text;
}
Or, if you really want to keep it simple (and your file is only a few 100k, stick it in a resource folder:
TextAsset txt = (TextAsset)Resources.Load(fileName, typeof(TextAsset));
string content = txt.text;

Android : download content from URL which returns mp3 file

After 2 days of research, I didn't found any solution to my problem :/
I want to download an mp3 file, which is returned only after calling a URL in a browser.
I can't give you the actual url because I'm not allowed to due to rights restrictions, but it is of the form:
http://wscompany.name.com/downloadws/getDlFile/mdkHdKy97RppVWOsIOdDBuG/audio/1478
As you can see, this URL doesn't have the mp3 extension. So if I put this kind of URL in a browser on windows, it returns an MP3 to save onto the disk, which is fine. But if I want to call this URL in android in order to download the final file returned (the mp3), it doesn't work.
I tried with a url containing a mp3 file directly and it works very well (like http://www.mediacollege.com/downloads/sound-effects/urban/factory/Factory_External_01.mp3), but not with an url without the mp3 extension, even though it does returns an mp3, I hope you see what I mean.
Does anyone know how to do that in android ?
Here is my code, using an AsyncTask, called by
new Download(MyActivity.this, urlToCall).execute();
And the Download AsyncTask :
public class Download extends AsyncTask<String, Void, String>
{
ProgressDialog mProgressDialog;
Context context;
String urlDownload;
public Download(Context context,String url)
{
this.context = context;
this.urlDownload=url;
}
protected void onPreExecute()
{
mProgressDialog = ProgressDialog.show(context, "","Please wait, Download for " + urlDownload );
Log.v("DOWNLOAD", "Wait for downloading url : " + urlDownload);
}
protected String doInBackground(String... params)
{
try
{
//URL url = new URL("http://www.mediacollege.com/downloads/sound-effects/urban/factory/Factory_External_01.mp3");
URL url = new URL(urlDownload);
Log.w( "DOWNLOAD" , "URL TO CALL : " + url.toString());
HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
//set up some things on the connection
urlConnection.setRequestMethod("GET");
urlConnection.setDoOutput(true);
urlConnection.connect();
File folder = new File(Environment.getExternalStorageDirectory()+ "/MyDownloaded/") ;
boolean success = true;
if (!folder.exists()) {
success = folder.mkdir();
}
File file = new File(folder,"somefile.mp3");
FileOutputStream fileOutput = new FileOutputStream(file);
InputStream inputStream = urlConnection.getInputStream();
//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
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);
Log.w( "DOWNLOAD" , "progress " + downloadedSize + " / " + totalSize);
}
//close the output stream when done
fileOutput.close();
//catch some possible errors...
}
catch (MalformedURLException e)
{
Log.e( "DOWNLOAD" , "ERROR : " + e );
}
catch (IOException e)
{
Log.e( "DOWNLOAD" , "ERROR : " + e );
}
return "done";
}
private void publishProgress( int i )
{
Log.v("DOWNLOAD", "PROGRESS ... " + i);
}
protected void onPostExecute(String result)
{
if (result.equals("done"))
mProgressDialog.dismiss();
}
Thank you in advance, I hope someone will help me :)
DevJ

More than likely the initial URL contains a status 302 redirect to ANOTHER page that actually hosts or provides the mp3. There is a Java library called Jsoup that you can use to get to the actual mp3 file and download it. So let's say you have the initial URL of:
http://wscompany.name.com/downloadws/getDlFile/mdkHdKy97RppVWOsIOdDBuG/audio/1478
The first thing you should do is open up your browser, right click anywhere on the screen and choose "inspect element" or something similar so that you can monitor the network traffic. With the inspect element pane open, enter the above URL and you should see that it first goes to that URL (shows a status of 302 redirect), then goes to ANOTHER URL (possibly), before ending up at the destination (with a status 200). The status 200 page is the actual page you want. You can enter the above URL in Jsoup like this:
Document doc = Jsoup.connect("http://wscompany.name.com/downloadws/getDlFile/mdkHdKy97RppVWOsIOdDBuG/audio/1478").followredirect(true).header("","").header("",""). ...etc .post() or .get();
It returns a Document object (read the Jsoup documentation). This Document object can be parsed to get certain data...like OTHER URLs that you can also pass to the Jsoup.connect method, until you get to the actual mp3 you want to download with Android.
It will be important to look at the request headers listed in the "inspect element" pane and add those headers to the .connect() method by chaining them with multiple .header() methods.
I know this response is 2 years too late, but hopefully it will be helpful for anyone still needing to do what you were attempting.

You can use a network sniffer (like Wireshark) on desktop PC to see what exactly happens when requesting the MP3. My guess is that there is a redirect to another URL.

Samsung file io - can write file but not read back in

For several weeks, we've been fighting an issue that's been discussed on SO before, but without a working answer in the specific case we've encountered. So after re-reading dozens of threads and trying all the code folks offered, I'm asking for your assistance, please. (BTW, forget asking Samsung: they proved way less than helpful. )
OS : 4.0.x through 4.2.x (API lvls 14 - 17)
Devices : Samsung S3 which have /storage/sdcard0 (all we tested do.)
... as opposed to the older /mnt/sdcard or /storage/sdcard (note lack of trailing zero).
Use any flavor of
Environment.getExternalStorageDirectory().getAbsolutePath();
// e.g .getPath() .getName() etc.
// or
Environment.getExternalStoragePublicDirectory() ...
or use a media URI to inform system of file location. (Astounding that THAT fails too.)
Now save a file - you'll see it show up in the DDMS file explorer. And you can pull it via ADB to verify. But just try reading that same file back in - using the same app that you wrote it with in the first place ! ENOENT - file not found. Hardcode the path, append '/external_sd/' to the path the os call gives above (Sumsung says this is needed - but it doesn't do squat.)
Change 'sdcard0' to 'sdcard' as some have suggested ... tried all that too. ZILCH.
Permissions, etc are all correct of course ( since when could a process write a file but not read it !?) .
USB cable connected or not, debug mode or not, "real app" vs developer app (untrusted app) - results all the same: ENOENT )
Any ideas or suggestions on how to proceed here?
(With a sledge hammer in hand, staring intently at a new SG3 ... And, SAMSUNG, if you are reading this: "/storage/sdcard0/external_sd/myFileFoo.txt" does NOT work.)
/**
*
* [Edit - added sample of failing code, as requested]
*/
public void testFile () {
ImageView image ;
String m_Path = "/SamsuxS3/" ; // more fun than a barrel of NULLs
String m_MyFile = "myFileFoo.jpg" ;
image = (ImageView) findViewById ( R.id.imageView1 ) ;
//// Test 0:
m_Path = Environment.getExternalStorageDirectory().getAbsolutePath() ;
//// Test 1:
// String getPath = Environment.getExternalStorageDirectory().getPath(); // fails
// m_Path = getPath ;
//// Test 2:
// String getName = Environment.getExternalStorageDirectory().getName() ; //fails
// m_Path = getName ;
//// Test 3:
// String defPics = Environment.DIRECTORY_PICTURES; // fails
// m_Path = m_path + "/" + defPics + "/" ;
//// Test 4:
// m_Path = "/storage/sdcard0/" ; // fails
//// Test 5:
// m_Path = "/storage/sdcard0/external_sd/" // Samsung says so, but it fails too.
//// Test 6: now we're really hacking ...
// m_Path = "/storage/sdcard/" // Fails (although sdcard is mounted as sdcard0 - hmmm)
InputStream fIn = null;
File fileIn = new File(m_Path, m_MyFile);
try { //// This is only one way many attempts...
//// 1) just grab an image from a known resource,
//// 2) try to save it,
//// 3) then read it back into an ImageView.
//// External storage must be mounted or this fails.
InputStream is = getResources().openRawResource(R.drawable.somepicture) ; // works
OutputStream os = new FileOutputStream(fileIn); // OK
byte[] data = new byte[is.available()]; // OK
is.read(data); // OK
os.write(data); // OK - DDMS file explorer verfied
is.close();
os.close();
} catch (IOException e) {
Log.d("Error writing to " + m_Path, e.toString()); // never happened yet
}
//// now we step into the SamDung
////
InputStream fIn2 = null; //// Well, it's redundant but ...
File fileIn2 = new File(m_Path, m_MyFile);
try {
fIn2 = new FileInputStream (fileIn2) ;
//
// Here be the Dragons...
//
// Next line WORKS on every device EXCEPT a Samsung - blows up w/ ENOENT !
//
image.setImageBitmap ( BitmapFactory.decodeStream(fIn2) );
fIn2.close ();
} catch (Exception IOError) {
Log.d("WTF? I'm not moving to Korea: ", IOError.toString()) ;
}
}

The proper way to write a file on Android for Android 3.0+, where you intend to use the file again quickly, is:
os.flush();
os.getFD().sync();
os.close();
for a FileOutputStream named os.
Using this change, your example code works with Environment.getExternalStorageDirectory(), on a Samsung Galaxy S3, running Android 4.1.2.

Yahoo Currency Exchange Rates in Android 4

In my application, I need to get the current exchange rates for different currencies. As it has been suggested by this, this and this question a nice way to do it, is to use the Yahoo Finance service.
So, when I want to find, for example, the rate between USD and Canadian dollars, I simply send this link: http://download.finance.yahoo.com/d/quotes.csv?s=USDCAD=X&f=sl1d1t1ba&e=.csv
This is working fine for both my Motorola Atrix phone with Android 2.3.4 and the emulator again with Google API 2.3.3. However, when I try the exact same link from a Galaxy SII with Android ICS 4.0 and an emulator with Google API 4.0, in both cases the quotes.csv file contains only the "Missing Symbols List".
After digging around, I found out that this response can happen in case the rates were not found. But this response is for ANY currency I try under Android 4.0 (either Galaxy SII or emulator). Hence, I cannot get the rates with Android 4.0, but I can with Android 2.x.
Does anyone have experienced the same problem? Is there any workaround?
EDIT: This is the thread code that deals with downloading rates from the Yahoo Currency Service:
//show the progress dialog
downloadingDialog.show();
Runnable getRates = new Runnable() {
public void run(){
dataNotFound = false;
final String baseDir = getApplicationContext().getFilesDir().getAbsolutePath();
//download the rates from yahoo to a CSV file
downloadFileViaHTTP (baseDir);
//read the file line
String filePath = baseDir + "/" + "quotes.csv";
Log.d(tag, "-> filePath = " + filePath);
try {
// open the file for reading
InputStream instream = new FileInputStream(filePath);
// if file the available for reading
if (instream != null) {
// prepare the file for reading
InputStreamReader inputreader = new InputStreamReader(instream);
BufferedReader buffreader = new BufferedReader(inputreader);
//read the line
String fileLine = buffreader.readLine();
Log.d(tag, "fileLine = " + fileLine);
instream.close();
}
}
catch (Exception ex) {
// print stack trace.
}
}
};
final Thread t = new Thread(getRates);
t.start();
And this is my function for downloading the quotes.csv file from the Yahoo site:
public void downloadFileViaHTTP (String localPath) {
Log.d(tag, "downloadFileViaHTTP...");
try {
//this is the Yahoo url
String urlFile = "http://download.finance.yahoo.com/d/quotes.csv?s=" + fromCurrency + toCurrency + "=X&f=sl1d1t1ba&e=.csv";
Log.d(tag,"urlFile = " + urlFile);
URL url = new URL(urlFile);
//create the new connection
HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setRequestMethod("GET");
urlConnection.setDoOutput(true);
urlConnection.connect();
//pointer to the downloaded file path
String localFileName = localPath + "/" + "quotes.csv";
//this is the actual downloaded file
File MyFilePtrDest = new File(localFileName);
Log.d(tag,"localFileName = " + localFileName);
//this will be used in reading the data from the Internet
InputStream inputStream = urlConnection.getInputStream();
//this will be used to write the downloaded data into the file we created
FileOutputStream fileOutput = new FileOutputStream(MyFilePtrDest);
byte[] buffer = new byte[1024];
int bufferLength = 0; //used to store a temporary size of the buffer
//write buffer contents to file
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);
}
inputStream.close();
//close the output stream when done
fileOutput.flush();
fileOutput.close();
urlConnection.disconnect();
}
catch (IOException e) {
//data were not found
dataNotFound = true;
// TODO Auto-generated catch block
e.printStackTrace();
}
}
This is the log from the Google API 2.3.3 emulator:
12-18 11:04:24.091: D/CurrencyConverter(414): downloadFileViaHTTP...
12-18 11:04:24.091: D/CurrencyConverter(414): urlFile = http://download.finance.yahoo.com/d/quotes.csv?s=EURUSD=X&f=sl1d1t1ba&e=.csv
12-18 11:04:24.282: D/CurrencyConverter(414): localFileName = /data/data/com.myapps.currencyconverter/files/quotes.csv
12-18 11:04:24.461: D/CurrencyConverter(414): -> filePath = /data/data/com.myapps.currencyconverter/files/quotes.csv
12-18 11:04:24.461: D/CurrencyConverter(414): fileLine = "EURUSD=X",1.3172,"12/18/2012","4:03am",1.317,1.3174
And this is the log from the Google API 4.0 emulator:
12-18 11:47:36.130: D/CurrencyConverter(668): downloadFileViaHTTP...
12-18 11:47:36.130: D/CurrencyConverter(668): urlFile = http://download.finance.yahoo.com/d/quotes.csv?s=EURUSD=X&f=sl1d1t1ba&e=.csv
12-18 11:47:36.449: D/dalvikvm(668): GC_CONCURRENT freed 306K, 4% free 11714K/12167K, paused 5ms+10ms
12-18 11:47:36.951: D/CurrencyConverter(668): localFileName = /data/data/com.myapps.currencyconverter/files/quotes.csv
12-18 11:47:37.159: D/CurrencyConverter(668): -> filePath = /data/data/com.myapps.currencyconverter/files/quotes.csv
12-18 11:47:37.159: D/CurrencyConverter(668): fileLine = Missing Symbols List.
As you can see the "fileLine" String variable, in the first case it gets the proper rates, while at the second, the quotes.csv file merely contains the "Missing Symbols List." value.
EDIT2: I have uploaded to a shared folder the complete Android project, so everyone can try it. You may compile and run with both Android 2.x and 4 emulators (or phones if you have :-))
EDIT3: Although this is not a direct answer, still it is a workaround. I use the Google currency calculator instead of the Yahoo one. To use the Google currency calculator, simply change the Yahoo url with this one: http://www.google.com/ig/calculator?hl=en&q=1" + fromCurrency + "=?" + toCurrency. Click this link to see an example of converting 78 Euros to USDs. I checked and it works with both Android versions. However if anyone finds out why this is happening with the Yahoo site, it would be good to share it with us..

Try to remove urlConnection.setDoOutput(true); when you run in ICS. Because ICS turns GET request to POST when setDoOutput(true).
This problem is reported here and here