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

Derrick Shepherd
Derrick Shepherd
4,861 Points
Posted by Derrick Shepherd
Derrick Shepherd
4,861 Points

I can't seem to make sense of this question, any help will be appreciated

I'm not sure what code will work as I've tried several...

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);
      game.writeString(mGames);
    }

    // This is a helper method to tally votes on a back-end system
    public void sendVote(String game) {
        VoteService.recordVote(game);
    }
}
Derrick Shepherd
Derrick Shepherd
4,861 Points
Derrick Shepherd
Derrick Shepherd
4,861 Points

Here's The Assignment - "Now we can do something with the item that was tapped on. We have a helper method, "sendVote()", that will log the user's vote for their favorite game. Call it with the correct game from the list."

5 Answers

Ben Deitch
STAFF
Ben Deitch
Treehouse Teacher
Ben Deitch
Ben Deitch
Treehouse Teacher

Hey Derrick! The 'game' variable doesn't exist inside onListItemClick. If you remove that line it should pass the first task.

Derrick Shepherd
Derrick Shepherd
4,861 Points
Derrick Shepherd
Derrick Shepherd
4,861 Points

The second assignment:

"Now we can do something with the item that was tapped on. We have a helper method, "sendVote()", that will log the user's vote for their favorite game. Call it with the correct game from the list."

Derrick Shepherd
Derrick Shepherd
4,861 Points
Derrick Shepherd
Derrick Shepherd
4,861 Points

Thanks Ben, I did get past the first task, it's the second task I'm having trouble with.

Ben Deitch
Ben Deitch
Treehouse Teacher
Ben Deitch
Ben Deitch
Treehouse Teacher

After the call to super, we're supposed to call 'sendVote' and pass in the game title of the list item we clicked. We can get the game title by using the mGames array and the position parameter.

Derrick Shepherd
Derrick Shepherd
4,861 Points
Derrick Shepherd
Derrick Shepherd
4,861 Points

Still can't figure it out, I'll keep it. Thanks for the input Ben.

Ben Deitch
Ben Deitch
Treehouse Teacher
Ben Deitch
Ben Deitch
Treehouse Teacher

Instead of:

game.writeString(mGames);

we need to call sendVote:

sendVote(...)

and pass in the game title:

mGames[...]

of the list item we clicked:

mGames[position]

So:

sendVote(mGames[position]);