Question

I wanted to generate a list view using below code. But after running this code the screen just shows a blank screen and the “hello” text which is there in main layout

package com.android.test1;

import android.app.ListActivity;
import android.os.Bundle;
import android.widget.AdapterView;
import android.widget.Toast;

import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.AdapterView;

public class HelloListView extends ListActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

        String a[] = new String[]{"a", "b", "c", "d"};
         setListAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, a));

          ListView lv = getListView();

          lv.setTextFilterEnabled(true);

    }
}

and the main layout code is as given below

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >
    <TextView 
        android:text="hello"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        />
    <ListView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/list_view"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="#FFFFFFFF">
</ListView>

</LinearLayout>

Answer 1

Your ListView in XML should have this android:id="@android:id/list"

and remove that background attribute..