Question

I’ve got problem with Listview in Android.
Then I try to set adapter to a listview I got Resource Not Found Exception.

My code:

public class MyActivity extends Activity {
    ArrayList<String> list;

    public void onCreate(Bundle savedInstanceState) {
        list = new ArrayList<String>();
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        list.add("first");

        listView = (ListView)findViewById(R.id.CheckpointList);
        ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, R.id.CheckpointList, list);
        listView.setAdapter(adapter);
    }
}

And in my main.xml I’ve got:

<ListView android:id="@+id/CheckpointList" android:layout_height="wrap_content" android:layout_width="fill_parent"></ListView>

I’ve tried to clean and refesh project – no effects…

How to solve this problem?

Cheers.

Answer 1

The resource you hand over to the ArrayAdapter should not be the id of the ListView. It should be the textViewResourceId – which is basically which TextView-layout-id you want your items, in the list, to be rendered as.

One of the standards is e.g. android.R.layout.simple_list_item_1.

Here’s an example of a simple ListView:

public class ListviewExample extends Activity
{
    private ListView listView;
    private String listView_data[] = {"Android","iPhone","BlackBerry","AndroidPeople"};

    @Override
    public void onCreate(Bundle icicle)
    {
        super.onCreate(icicle);
        setContentView(R.layout.main);
        listView = (ListView) findViewById(R.id.ListView1);
        // By using setAdapter method in listview we add the string array to the ListView.
        listView.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1 , listView_data));
    }
}