I am new to Android application development and I have a question on using icons in Android application. I have to use nearly 20 icons in my Android application. For this, should I need to place 20 individual icon PNG files under drawable folder. Or, is there any possibility of consolidating all 20 icons into single PNG file (Image sprite) as an icon set and place that single PNG file in drawable folder? If we can do so, can someone give some pointers on how to do that and referred in application. Thanks.