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I am showing enormous views on tabs formed with listview. ListView gets its data from an Adapter extending BaseAdapter. Every time, I move back and forth tabs, the Pager tends to create view in ListView again and again, wasting my precious CPU.
OK, so I tried using parentView.getChild(atIndex) in getView of BaseAdapter but that just ruins the view on scrolling the ListView.
Question, any way to optimize the performance by caching the view?
Regards,
The ListView already recycles views. The recycled view will be the View parameter in your adapters getView method.
You should also consider using the ViewHolder pattern to avoid a bunch of findViewById calls. See this link for more details http://developer.android.com/resources/samples/ApiDemos/src/com/example/android/apis/view/List14.html
Edit: Here’s some more references I was looking at tonight for optimizing ListViews:
http://lucasr.org/2012/04/05/performance-tips-for-androids-listview/
http://www.youtube.com/watch?v=wDBM6wVEO70