Question

I have a list view in which I show data. When I click on a row of the list view, I want to display data for that row from web services. How do I do that?

Answer 1

What you do is set the ListView‘s OnItemClickListener with the setOnItemClickListener method. You then obtain the “item object” for the clicked item with the getItemAtPosition method:

listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
    public void onItemClick(AdapterView<?> parentView, View itemView, int position, long id) {
        ListView listView = (ListView) parentView;
        Object o = listView.getItemAtPosition(position);
        //...
    }
});

The type of the “item object” (o in the example above) depends on the ListAdapter that the list view is using. One common choice is CursorAdapter, in which case the type of the item object is conveniently the Cursor to the record corresponding to the list item that was clicked.