Android：如何为扩展MapActivity的类调用ListActivity方法？

Question

I am trying to create a class that uses both a ListView and MapView. I originally wrote the class to extend ListActivity. However, I later found out that I would need to extend MapView and then reference the ListView if I wanted to combine the two.

So, this is how is is now declared:

public class MapListActivity extends MapActivity {

Next I figured I needed a way to get at the ListView so I wrote this:

//instance vars
ListView listView;

//get ref to listview
listView = (ListView) findViewById(android.R.id.list);

In line with the old code I added:

    listView.setListAdapter(adapter);

    // selecting single ListView item
    listView.getListView();

However, the error I get is that the method setListAdapter(ListAdapter) is undefined for the type MapListActivity or ListView. This makes sense for the MapView because the class extends MapActivity but I am not sure how to get it to work now that the class no longer extends ListActivity?

Any help appreciated.

Answer 1

Read the ListView documentation

listView.setListAdapter(adapter);

should be

listView.setAdapter(adapter);

Also,

listView.getListView();

doesn't exist for a ListView . It is unclear what you want to achieve. If you want to get the item at a position, you can use ListView#getItemAtPosition (int pos)