Android list view demo.

Android listview demo

Listview provides a way to display several items in a vertical scrollable list. It can be achieved by using a ListView and an ArrayAdapter. Following are steps that demonstrate list view in android.

Steps to create Android Studio project:

1. Open Android Studio.
2. Click on Start a new Android Studio project.
3. Enter your Application name.
4. Select Minimum SDK version of your android app as 2.3.3 or you can select any other that suites your app.
5. Select the type of Activity as Empty Activity.
6. Next rename the Main activity or leave it as default.

Steps to implement Listview in android project:

1. In your MainActivity type the following code:

import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.widget.ArrayAdapter;I mport android.widget.ListView; public class MainActivity extends AppCompatActivity {

    String[] list_items = {"One","Two","Three","Four","Five"};

    @Override    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ArrayAdapter adapter = new ArrayAdapter<String>(this,R.layout.list_item, list_items);
        ListView listView = (ListView) findViewById(R.id.list_view);
        listView.setAdapter(adapter);
    }
} 2. In your activity_main.xml type the following code:

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:tools="http://schemas.android.com/tools"
  android:id="@+id/activity_main"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:paddingBottom="16dp"
  android:paddingTop="16dp"
  tools:context="android.demo.MainActivity">

   <ListView
  android:id="@+id/list_view"
  android:layout_width="match_parent"
  android:layout_height="match_parent" >
   </ListView>

</RelativeLayout>

3. Create a xml file list_item.xml in res>layout folder and type the following code in list_item.xml.

<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
 android:id="@+id/text"
 android:padding="20dp"
 android:layout_width="fill_parent"
 android:layout_height="fill_parent"
 android:textSize="20dp"
 >
</TextView>

Congratulations !!

Now you are ready to test your application in emulator or physical android phone via USB debugging.