CODEWITHSUNDEEP
androidandroid-listview
mohsen
mohsen

Reputation: 461

android- changing custom listview background for some of rows

I need to change background color of each row on my listview .I'm using a custom listview .

each row has a RelativeLayout and I change it like this :

public View getView(int position, View convertView, ViewGroup parent) {
 ........
if (convertView == null) {
                convertView = inflater.inflate(R.layout.item, null);
                holder = new ViewHolder();
                holder.rl=(RelativeLayout)convertView.findViewById(R.id.rl);
                holder.rl.setBackgroundResource(R.drawable.roundcorner);
                convertView.setTag(holder);
            } else {
                holder = (ViewHolder) convertView.getTag();
            }
         holder.rl.setBackgroundResource(R.drawable.round_corner_vip);
}}

I don't change every row's bakcground , I just change some of them .

I wanted to know is it a bad idea? I mean , does it consume lots of memory and it's bad for performance ?

thanks

Upvotes: 1

Views: 1008

Answers (2)

Rajesh Jadav
Rajesh Jadav

Reputation: 12861

Yes, You can change Background Color of ListView Row from getView() Based on Position. Put this code in Your getView() Method. i have used position % 4 for repeating color after 4th item 

    switch (position % 4) {
        case 0:
            convertView.setBackgroundColor(Color.BLACK);
            break;
        case 1:
            convertView.setBackgroundColor(Color.RED);
            break;
        case 2:
            convertView.setBackgroundColor(Color.GREEN);
            break;
        case 3:
            convertView.setBackgroundColor(Color.GRAY);
            break;
        default:
            break;
        }

If You have Fix items in ListView then You can also change color according to position

        if(position == 0) {
            convertView.setBackgroundColor(Color.BLACK);
        } else if(position == 1) {
            convertView.setBackgroundColor(Color.RED);
        } else if(position == 2) {
            convertView.setBackgroundColor(Color.GRAY);
        } else if(position == 3) {
            convertView.setBackgroundColor(Color.GREEN);
        }

Hope it helps!

Upvotes: 3

XtreemDeveloper
XtreemDeveloper

Reputation: 1142

Your drawable name state that you have two types of drawables roundcorner and round_corner_vip so I think you have to set a vip flag as @Haresh Chhelana said in the comments, then in your adapter class getView() you should do something like that:

if(vip_flag)
{
  holder.rl.setBackgroundResource(R.drawable.round_corner_vip);
}
else
{
  holder.rl.setBackgroundResource(R.drawable.roundcorner);
} 
// or put some more else-if conditions and set background according to conditions.

Upvotes: 3

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