Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Android Android Lists and Adapters (2015) Acting on List Item Taps Tapping on a ListView Item

Carlos Quevedo
Carlos Quevedo
5,911 Points

Not able to call sendVote() properly

For some reason, I'm having trouble call sendVote(). I'm using the same format used in the OnListItemClick(0) method in the video such as:

String dayOfTheWeek = mDays[position].getDayOfTheWeek();

Am I calling it wrong?

Thanks!

GameListActivity.java
import android.os.Bundle;
import android.view.View;
import android.widget.ArrayAdapter;
import android.view.ListView;

public class GameListActivity extends ListActivity {

    public String[] mGames = {
        "Age of Empires",
        "Civilization",
        "Minecraft",
        "SimCity"
    };

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_game_list);

        ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, mGames);
        setListAdapter(adapter);
    }

    @Override
    protected void onListItemClick(ListView l, View v, int position, long id) {
        super.onListItemClick(l, v, position, id);

        String game = mGames[position].sendVote();
    }

    // This is a helper method to tally votes on a back-end system
    public void sendVote(String game) {
        VoteService.recordVote(game);
    }
}

1 Answer

Seth Kroger
Seth Kroger
56,414 Points

Let's go to the docs: onListItemClick

"Subclasses can call getListView().getItemAtPosition(position) if they need to access the data associated with the selected item"

position isn't the position of the data item, it's the position of the rendered View in the List, which isn't the same thing.