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connection failure with with webservice

StackOverflow https://stackoverflow.com/questions/10811494


I developed app for version 2.3 ,it uses web service to authenticate device users;same app when I deployed in Samsung GT-P3100 (version4.0.3 Icecream Sandwitch ) I get connection failure;though the device I can communicate to webservice using browser...please suggest ,do I need to recreate the project for version 4.0.3 or does tab requires some special permission in mainfest file?..what could be the possible cause

No correct solution


Use this code for get the html content:

public static String getHTML ( String url) throws IOException { 
            if (url == null || url.length() == 0) { 
                    throw new IllegalArgumentException("url cannot be null or empty"); 
            final HttpURLConnection conn = (HttpURLConnection) new URL(url).openConnection(); 
            final BufferedReader buf = new BufferedReader(new InputStreamReader(conn.getInputStream())); 
            final StringBuilder page = new StringBuilder(); 
            final String lineEnd = System.getProperty("line.separator"); 
            String line; 
            try { 
                    while (true) { 
                            line = buf.readLine(); 
                            if (line == null) { 
            } finally { 

            try {
                    return page.toString().substring(0, page.toString().length() -1);
            } catch (Exception e) {
                    return "";


you need add the permision in AndroidManifest.xml

<uses-permission android:name="android.permission.INTERNET" />

maybe on android 4 and heighter you need to perform this function in a new thread, for that use the code:


//call the fonction getHTML() in a new thread
private void startInNewThread() {

            new Thread(new Runnable() {
                    public void run() {
                          getHTML ("URL");


After if you need to update UI with the result of "getHtml()" you must to create a Handler

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