Adapting Data for Display in a List

Question

Here's the challenge: Inside the ‘onCreate()’ method, create two HashMap<String, String> variables and in each one, store a website name value using KEY_NAME as the key and the website URL value using KEY_URL as the key.

and here's the error: Bummer! Make sure you add the name of the website using the KEY_NAME variable for both HashMap variables.

When I use the KEY_NAME for both HashMaps then I get a compilation error. Help would be appreciated.

import android.os.Bundle;
import android.widget.SimpleAdapter;

public class WebsiteListActivity extends ListActivity {

    public static final String KEY_NAME = "name";
    public static final String KEY_URL = "url";

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

        String[] keys = { KEY_NAME, KEY_URL };
        int[] ids = { android.R.id.text1, android.R.id.text2 };

        // Add code here!
      HashMap<String, String> KEY_NAME = new HashMap <String, String>();
       HashMap<String, String> KEY_URL = new HashMap <String, String>();

      //key.Put(KEY_NAME, value);
      //id.Put(KEY_URL);

    }
}

Answer 1 · 2013-12-13T09:19:37Z

December 13, 2013 9:19am

At first, the challenge text is a little bit hard to understand, but when you are done it makes more sense :) I feel the challenge text could be improved with something like "Inside the ‘onCreate()’ method, create two HashMap<String, String> variables with any variable name."

So, first of all, you shouldn't name your HashMaps KEY_NAME and KEY_URL. They can be called whatever you want. Second, you want to put in a name in each of them using KEY_NAME as key, and then assign a url using the key KEY_URL. So you want to do something like

map.put(KEY_NAME, "treehouse");

Where map is one of your HashMaps. You should do this on both names and urls on both HashMap objects :)

Hope this helps!

Answer 2 · 2014-02-12T21:28:24Z

February 12, 2014 9:28pm

I know it's late, but super helpful. Thanks!

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Rafael Moreno

Rafael Moreno

Adapting Data for Display in a List

2 Answers

Philip Larson

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Rafael Moreno

Rafael Moreno