nullPointerException in multi column list using hashmap

Question

I already tried references from similar question on SO, but hasn\'t got the appropriate solution.

I\'m trying to fetch the data from a webpage and displ

Answer 1

You are creating the listViewAdapter in the onCreate of MultiCol and passing in a reference to list. However, at that point list has not been instantiated yet, since that does not happen until your AsyncTask finishes. In other words: you're passing in null, hence the nullpointer exception in LogCat.

To correct this, you'll probably want to move the following two lines of code to the end of the onPostExecute() of your DownloadWebPageTask:

listviewAdapter adapter = new listviewAdapter(this, list);
lview.setAdapter(adapter);

That way you will supply the adapter with an instantiated (non-null) list object.