I am trying to implement ViewHolder in my Android app, but I keep getting that ViewHolder cannot be resolved to a type, without any suggestions for an import. Anyone know how to get around this?
See Question&Answers more detail:osI am trying to implement ViewHolder in my Android app, but I keep getting that ViewHolder cannot be resolved to a type, without any suggestions for an import. Anyone know how to get around this?
See Question&Answers more detail:osThat's because a ViewHolder
is not a class that is from the Android SDK, you make it yourself.
Based on what I can find, a ViewHolder
is an implementation that stores Views (per row in a ListView usually) for a larger area, so it is a sort of helper class and cache mechanism. This is one example I found on Android Developers of what a ViewHolder
would contain.
static class ViewHolder {
TextView text;
TextView timestamp;
ImageView icon;
ProgressBar progress;
int position;
}
Then you can implement it in a ListAdapter
or a similar class.