Question

Ok I have a big problem here.

I have a service that must accest a listview(in a xml file ofcourse). I tried with findviewbyid,ofcourse it did not work,cause it’s not an activity.

Then I tried to make a static var with that listview in the main activity.Surprise! You can’t make it static cause it uses findviewbyid.

I also tried to make a function in the main activity that returns a listview. The code looks ok,however when the app gets to that function crashes. In the log it apears because of a nullpointer…

Can someone tell me how to acces that listview if I’m in a service? It’s annoying!

In the main activity,at onCreate the code is:

    UpdateDisplay();

    countdown();
    startService(new Intent(this, ss.class));

The source for the listview:

private void UpdateDisplay() //was private and void
    {
        TextView feedtitle = (TextView) findViewById(R.id.feedtitle);
        TextView feedpubdate = (TextView) findViewById(R.id.feedpubdate);
        ListView itemlist = (ListView) findViewById(R.id.itemlist);


        if (feed == null)
        {
            feedtitle.setText("No RSS Feed Available");
            return;
        }

        feedtitle.setText(feed.getTitle());
        feedpubdate.setText(feed.getPubDate());

        ArrayAdapter<RSSItem> adapter = new ArrayAdapter<RSSItem>(this ,android.R.layout.simple_list_item_1,feed.getAllItems());

        itemlist.setAdapter(adapter);

        itemlist.setOnItemClickListener(this);

        itemlist.setSelection(0);

    }

Answer 1

Can someone tell me how to acces that listview if I’m in a service?

This is impossible. Services are not expected to deal with UI elements directly.

You can update your question with WHY do you need a ListView in a Service. So others could point you in a right direction.