Connection.java

public class ConnectionThread extends Thread
{
	LoadingScreen loadingScreen;
	String url;
	HttpConnection httpConnection;
	InputStream inputStream;
	String id="0";
	StringBuffer stringBuffer=new StringBuffer();
	public ConnectionThread(LoadingScreen loadingScreen, String url)
	{
		this.loadingScreen=loadingScreen;
		this.url=url;
	}
	public void run()
	{
		try
		{
			httpConnection=(HttpConnection)Connector.open("http://startlogic.totemcat.net/sika/WebServices/sikainfo.php"+";interface=wifi");
			URLEncodedPostData oPostData = new URLEncodedPostData(URLEncodedPostData.DEFAULT_CHARSET, false);

			oPostData.append("category",id);
			System.out.println("================"+oPostData.toString());
			httpConnection.setRequestMethod(HttpConnection.POST);
			httpConnection.setRequestProperty(HttpProtocolConstants.HEADER_CONTENT_TYPE, oPostData.getContentType());
			byte [] postBytes = oPostData.getBytes();
			httpConnection.setRequestProperty(HttpProtocolConstants.HEADER_CONTENT_LENGTH, Integer.toString(postBytes.length));
			OutputStream strmOut = httpConnection.openOutputStream();
			strmOut.write(postBytes);
			strmOut.flush();
			strmOut.close();

			int response=httpConnection.getResponseCode();
			if(response==HttpConnection.HTTP_OK)
			{
				inputStream = httpConnection.openInputStream();
				int c;
				while((c=inputStream.read())!=-1)
				{
					stringBuffer.append((char)c);
				}
//				System.out.println(">>>>>>>>>>>>>>>>>"+stringBuffer.toString());
				callBack(stringBuffer.toString());

			}
			else
			{
				callBack("ERROR");
			}
		}
		catch (Exception e)
		{
			synchronized (UiApplication.getEventLock())
			{
				UiApplication.getUiApplication().popScreen(UiApplication.getUiApplication().getActiveScreen());
				StartUp.exceptionHandling(e.getMessage());
			}
		}
		finally
		{
			try
			{
				if(httpConnection!=null)
				{
					httpConnection.close();
				}
				if(inputStream!=null)
				{
					inputStream.close();
				}
			}
			catch (Exception e2)
			{}
		}
	}
	private void callBack(String response)
	{
		if(response.equals("ERROR"))
		{
			UiApplication.getUiApplication().popScreen(UiApplication.getUiApplication().getActiveScreen());
			StartUp.exceptionHandling("URL Not found");
		}
		else
		{
			try
			{
				System.out.println(response);
				//do what you want;
			}
			catch (Exception e)
			{
				StartUp.exceptionHandling("Data Not found");
			}
		}
	}
}