ListView item highlight when item is selected

This program is for highlighting a particular item in a listview when the item is selected.

First make "List_HighLight_Activity.java" :-

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.TextView;

public class List_HighLight_Activity extends Activity {

ListView lv;
TextView tv;
IndexListViewAdapter indexlistviewAdapter;
static int counter=0;
   
@Override
    public void onCreate(Bundle savedInstanceState)
{
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        tv = (TextView)findViewById(R.id.TextView_name);
        lv = (ListView)findViewById(R.id.list);
        
        String Info[]= new String[] {"Arshad","Parwez","Arshu","Cool","Dude","Smart",
        "Attitude","Respect","Love","Peace","Android","Application","Developer"};
        showList(Info);
lv.setAdapter(indexlistviewAdapter);

        lv.setOnItemClickListener(new OnItemClickListener()
        {
public void onItemClick(AdapterView<?> parent, View view, int position, long id)
{
counter=position;
}
});
    }
    
    void showList(String[] values)
    {
indexlistviewAdapter = new IndexListViewAdapter(this, values)
{
@Override
public View getView(int position, View convertView, ViewGroup parent)
{
View row = super.getView(position, convertView, parent);
return row;
}
};
}
}


Then, make a file named "IndexListViewAdapter.java" :-

import android.app.Activity;
import android.graphics.Color;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;
public class IndexListViewAdapter extends BaseAdapter
{
    Activity context;
    String index[];
        public IndexListViewAdapter(Activity context, String[] index) {
        super();
        this.context = context;
        this.index = index;
    }
    public int getCount() {
        // TODO Auto-generated method stub
        return index.length;
    }
    public Object getItem(int position) {
        // TODO Auto-generated method stub
        return null;
    }
    public long getItemId(int position) {
        // TODO Auto-generated method stub
        return 0;
    }

    private class ViewHolder {
        TextView txtViewindex;
    }
    
    public View getView(int position, View convertView, ViewGroup parent)
    {
        // TODO Auto-generated method stub
        ViewHolder holder;
        
        LayoutInflater inflater =  context.getLayoutInflater();
        if (convertView == null)
        {
            convertView = inflater.inflate(R.layout.index_list_row, null);
            holder = new ViewHolder();
            holder.txtViewindex = (TextView) convertView.findViewById(R.id.TextView_name);
            convertView.setTag(holder);
        }
        else
        {
            holder = (ViewHolder) convertView.getTag();
        }
        holder.txtViewindex.setText(index[position]);
        
        
        if (position==List_HighLight_Activity.counter) {
        convertView.setBackgroundColor(Color.rgb(99,184,255));
} else {
convertView.setBackgroundColor(Color.WHITE);
}
        return convertView;
    }
}


Then, make a file named "list_bg.xml" in "/res/drawable" folder :-


<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_selected="false"
    android:drawable="@color/white" />
<item android:state_selected="true"
 android:state_pressed="false" 
    android:drawable="@color/blue" />
</selector>

Then, make a file named "main.xml" in "/res/layout" folder :-


<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="@color/white" >
  <ListView
  android:id="@+id/list"
  android:layout_width="fill_parent"
android:layout_height="wrap_content"
        android:divider="#cdc9c9"
        android:dividerHeight="2sp"
        android:cacheColorHint="#fff"
        android:choiceMode="singleChoice"  />
</LinearLayout>


Then, make a file named "index_list_row.xml" in "/res/layout" folder (This is the view which I'm inflating in the list view. Here I'm just passing a textview. You can use your own view which you want to show in the listview.) :-


<?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="40sp"
    android:background="@drawable/list_bg"
    android:orientation="vertical" >
       <TextView 
           android:id="@+id/TextView_name"
           android:layout_width="fill_parent"
           android:layout_height="30sp"
           android:layout_marginLeft="5sp"
           android:textStyle="bold"
           android:textSize="16sp"
           android:gravity="center_vertical"
           android:textColor="@android:color/black"
           android:singleLine="true"  />
 </LinearLayout>


Then, make a file named "colors.xml" in "/res/values" folder (Here i'm using blue color for the item which is selected, rest all the items in the listview are all coloured white) :-


<?xml version="1.0" encoding="utf-8"?>
<resources> 
 <color name="blue">#f00f</color>
 <color name="white">#ffff</color>
</resources>


You are done now. Please run the code and let me know if you have any problem. 

You can download the full project source code from HERE