diff --git a/src/com/upc/pbe/upcnews/Descarrega.java b/src/com/upc/pbe/upcnews/Descarrega.java
index 999eab7..0a9e540 100644
--- a/src/com/upc/pbe/upcnews/Descarrega.java
+++ b/src/com/upc/pbe/upcnews/Descarrega.java
@@ -22,20 +22,29 @@ public class Descarrega extends AsyncTask<URL, Integer, String>
 	}
 
 	@Override
-	protected String doInBackground(URL... urls)
-	{
+	protected void onPreExecute() {
+		//Codi previ a l'execució de la tasca en background
+        //pDialog.setMax(100);
+        //pDialog.setProgress(0);
+    }
+	
+	@Override
+	protected String doInBackground(URL... urls){
+		//Codi de la tasca en background
 		String html = "";
-		// Iniciem la connexi� i creem els Streams
-		try
-		{
+		// Iniciem la connexió i creem els Streams
+		try {
 			URLConnection conn = urls[0].openConnection();
 			BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
-			// Iniciem la descarrega i anem guardant al String
-			Log.d(TAG, "\nDescarregant: \n");
-			Log.d(TAG, ">> URL: " + urls[0] + " >> Tamany: " + conn.getContentLength() + " bytes");
+			// Iniciem la descarrega, anem guardant al String i actualitzant la barra de progrés
+			int totalLength = conn.getContentLength();
+			int downloaded=0;
 			String inputLine;
-			while ((inputLine = in.readLine()) != null)
-			{
+			Log.d(TAG, "\nDescarregant: \n");
+			Log.d(TAG, ">> URL: " + urls[0] + " >> Tamany: " + totalLength + " bytes");
+			while ((inputLine = in.readLine()) != null) {
+				downloaded = downloaded + Integer.parseInt(inputLine.getBytes().toString());
+				publishProgress((downloaded/totalLength)*100);
 				html += inputLine + "\n";
 			}
 			in.close();
@@ -49,6 +58,11 @@ public class Descarrega extends AsyncTask<URL, Integer, String>
 		}
 		return html;
 	 }
-		
-}
-
+	
+	@Override
+	protected void onProgressUpdate(Integer... values) {
+        //Actualitza la barra de progrés de la descàrrega, respon a la crida de publishProgress
+		int progreso = values[0].intValue();
+        //pDialog.setProgress(progreso);
+    }
+}
\ No newline at end of file
diff --git a/src/com/upc/pbe/upcnews/MainActivity.java b/src/com/upc/pbe/upcnews/MainActivity.java
index 9f65484..2eb2aff 100644
--- a/src/com/upc/pbe/upcnews/MainActivity.java
+++ b/src/com/upc/pbe/upcnews/MainActivity.java
@@ -50,6 +50,7 @@ public class MainActivity extends Activity implements OnClickListener {
 		buttonDescarrega = (ImageButton) findViewById(R.id.button);
 		buttonDescarrega.setOnClickListener(this);
 		updateURL();
+		//Si vitamio no està instal·lat, mostrem el missatge d'alerta
 		PackageManager pm = getPackageManager();
 		List<PackageInfo> apps = pm.getInstalledPackages(0);
 		for(int i = 0; i < apps.size(); i++)