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Android

Posted by Johnson Ly
Johnson Ly
2,467 Points

How does the getView and adapter work?

For the custom adapter, we are creating, how exactly does the getView() and all of the other methods pertaining to the custom method actually work? Specifically, I know we get the length of the Day array data and return its position, but how is it going through the array? Is there some kind of loop working in the background running through the array? Thanks for the help

1 Answer

Nicolas Hampton
Nicolas Hampton
44,725 Points
Nicolas Hampton
Nicolas Hampton
44,725 Points

Check this out.

http://www.codeofaninja.com/2013/09/android-viewholder-pattern-example.html

basically, the listview understands that the convertView has already been created when the item scrolls off the page, but when it comes back, it thinks it has to reinflate and reattach all the information. We're creating a capsule that we tag to that listview, the viewholder, that has the findViewById data we attached the first time, so when the non-null convertView comes back, we don't have to set it up all over again, we just use the info we tagged to it the last time.