Lists and Adapters in Android

What is an adapter?

If we have our data and a list view, we can then use an adapter to adapt data for the view.

Android provides a number of different adapters.

Example with the ArrayAdapter, it is an extension of the BaseAdapter.

Declaring a string adapter would be ArrayAdapter<String> that can deal with generic types. We specify the type within the angle brackets.

package teamtreehouse.com.stormy.ui;

import ...

static class DailyForecastActivity extends ListActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_daily_forecast);

        String[] daysOfTheWeek = {
            "Sunday",
            "Monday",
            ...
        }
        ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1,
            daysOfTheWeek);

        setListAdapter(adapter);
    }
}
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