the variable convertView in getView of BaseAdapter . What is it for? when creating items should I always use convertView? What is the problem if I don't use it?
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1Go through this link http://stackoverflow.com/questions/10560624/what-is-the-purpose-of-convertview-in-listview-adapter – Anshuman Borah Nov 09 '15 at 09:01
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that helped . thanks – JITHIN GOPAL Nov 10 '15 at 04:39
1 Answers
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What is it for?
it an instance of the View if you inflate, the first time its value is null. E.g.
if (convertView == null) {
convertView = inflate...
}
when creating items should I always use convertView?
yes, but try to implement the ViewHolder pattern around it. It will speed up the scroll's performance.
What is the problem if I don't use it?
it depends on the the number of items you have in your ListView. We can go from laggy ux to crashes.
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