How Can I Connect Android App To Web Application In ((Local Host ))

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Java

Mobile

Android

Android4x

Hi , i made a mobile application (android) to connect internet and Show informations about some products .
when i use adress on the internet Like http://Google.com it works

ok

but if i change adress to http://localhost/mob1/Default.aspx it doesnt work !!

java.net.ConnectException: failed to connect to localhost/127.0.0.1 (port 80): connect failed: ECONNREFUSED (Connection refused)

for some reasons i need to connect my webSite in local Host .
any suggestion ?

Code :

protected String ShowHtml()
	{
		//TextView myTxt=(TextView)findViewById(R.id.txtReturn); 
		HttpURLConnection urlConnection = null;
		String line="";
		try
		{
		URL myUrl=new URL("http://localhost/mob1/Default.aspx");
		urlConnection = (HttpURLConnection)myUrl.openConnection();
		BufferedReader in = new BufferedReader (new InputStreamReader(urlConnection.getInputStream()));
		

		while(in.readLine()!=null)
		{
			line=line+in.readLine().toString();
			//Counter++;
		}
	
	
		}
		catch(Exception ex0)
		{
		Log.d("Error : ",ex0.toString());

		}
		finally
		{
			if(urlConnection!=null){urlConnection.disconnect(); 	}
			
			
		}
		int Count=line.length();
		return line="Count: "+String.valueOf(Count)+"/ Start XML : "+line;
		
	}