Question

I just wanted to use ListView without extending ListActivity (because I’m extending my abstract class with actionbar). So, how to use simple ArrayList with it? I tried:

ListView lv = (ListView) findViewById(R.layout.list);
lv.setAdapter(new ArrayAdapter<String>(this, R.layout.list_item, myArrayList));

But my app crashed with error on the last line (lv.setAdapter......). What should I do, please?

EDIT:

https://gist.github.com/2481484

Answer 1

Your lv variable is null because you are trying to get your ListView via R.layout.list. You should get it via R.id.your_list_id.

Also, you shouldn’t use ListViews with regular Activities like this. You should use a ListActivity instead. You can check how to use it here: http://developer.android.com/reference/android/app/ListActivity.html