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POTrying connecting my android app to postgres database on server
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copied!<p>I am trying to connect my android app to a postgres database running on server, but i am having problem.</p> <p>Following is my code, </p> <pre><code>@TargetApi(Build.VERSION_CODES.GINGERBREAD) private void download() throws IOException { // TODO Auto-generated method stub StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder() .permitAll().build(); StrictMode.setThreadPolicy(policy); int response = -1; InputStream in = null; try { Class.forName("org.postgresql.Driver"); } catch (ClassNotFoundException e) { e.printStackTrace(); text.setText((CharSequence) e);} try { HttpURLConnection conn1; String urli = "jdbc:postgresql://"my ip":5432/iwmp_prd?user=postgres"; conn1 = (HttpURLConnection) DriverManager.getConnection(urli); URL url = new URL(urli); //HttpURLConnection conn1 = url.openConnection(); conn1.connect(); if (!(conn1 instanceof HttpURLConnection)) throw new IOException("Not an HTTP connection"); //HttpURLConnection httpConn = (HttpURLConnection) conn1; //httpConn.setAllowUserInteraction(false); //httpConn.setInstanceFollowRedirects(true); //httpConn.setRequestMethod("GET"); //httpConn.connect(); response = conn1.getResponseCode(); if (response == HttpURLConnection.HTTP_OK) { in = conn1.getInputStream(); try { String nsql = "select user_name from iwmp_user_reg where user_id=?"; PreparedStatement pstm = ((Connection) conn1).prepareStatement(nsql); String user = "DL0000AD"; pstm.setString(1, user); ResultSet rs = pstm.executeQuery(); while (rs.next()) { String retval = rs.getString(1); text.setText((CharSequence) retval); } rs.close(); pstm.close(); ((Closeable) conn1).close(); } catch (SQLException e) { e.printStackTrace(); text.setText((CharSequence) e); } } } catch (Exception ex) { throw new IOException("Error connecting"); } } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } } </code></pre> <p>Errors as follows,</p> <pre><code>java.lang.ClassCastException: org.postgresql.jdbc2.Jdbc2Connection cannot be cast to java.net.HttpURLConnection and it i use HttpURLConnection, then i get an error of java.net.MalformedURLException: Unknown protocol: jdbc </code></pre> <p>I know my code is all messed up, but still i m trying.</p>

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