Efficient ListView in android

Question

What is the best way of constructing a ListView that uses the least memory possible? This is important, because I met a few implementations and most of them is

Answer 1

Look at this code with description to increase the efficiency of lisview.

Keep in mind when you have lots of data to show in listview then at a time do not load all data . First load 2o data then load another when listview reaches at end.

This is also another way to increase the efficiency of listview.