I've implemented the "five star" per level.

...main/java/hu/javaforum/android/falldown/MainActivity.java

...va/hu/javaforum/android/falldown/SelectLevelActivity.java

src/main/java/hu/javaforum/android/falldown/model/State.java

src/main/res/drawable/star_black.png

src/main/res/drawable/star_gold.png

src/main/res/layout/main.xml

src/main/res/layout/star_image.xml