| id | title | brief | sdk | |||||
|---|---|---|---|---|---|---|---|---|
F8D057EB-A890-4831-952C-3538862F04C5 |
Use an ArrayAdapter |
This recipe shows how to bind an array to a list using an ArrayAdapter. |
|
Follow these steps to display an array of strings in a ListView, which have been provided by ListActivity.
- Add a file named TextViewItem.xml under the Resources/layout folder containing the following XML.
<?xml version="1.0" encoding="UTF-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/textItem"
android:textSize="44sp"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
- In a
ListActivitysubclass, add the following code.
public class Activity1 : ListActivity
{
string[] data = {"one", "two", "three", "four", "five"} ;
protected override void OnCreate (Bundle bundle)
{
base.OnCreate (bundle);
ArrayAdapter adapter = new ArrayAdapter (this,
Resource.Layout.TextViewItem, data);
ListAdapter = adapter;
}
protected override void OnListItemClick (ListView l, View v,
int position, long id)
{
base.OnListItemClick (l, v, position, id);
Toast.MakeText (this, data [position],
ToastLength.Short).Show ();
}
}
An ArrayAdapter binds each object in an array to a TextView. The ListActivity
class used here implicitly contains a ListView that can be bound to a data
source through the ListAdapter property, causing each TextView instance to be
presented in a list. Overriding OnListItemClick allows us to handle item
selection.