File list (Check if you may need any files):
DragDrop
........\.classpath
........\.project
........\AndroidManifest.xml
........\assets
........\bin
........\...\DragDrop.apk
........\...\classes
........\...\.......\cn
........\...\.......\..\itcast
........\...\.......\..\......\dragdrop
........\...\.......\..\......\........\ColorBall.class
........\...\.......\..\......\........\DrawView.class
........\...\.......\..\......\........\MainActivity.class
........\...\.......\..\......\........\R$attr.class
........\...\.......\..\......\........\R$drawable.class
........\...\.......\..\......\........\R$layout.class
........\...\.......\..\......\........\R$string.class
........\...\.......\..\......\........\R.class
........\...\classes.dex
........\...\res
........\...\...\drawable-hdpi
........\...\...\.............\bol_blauw.png
........\...\...\.............\bol_geel.png
........\...\...\.............\bol_groen.png
........\...\...\.............\bol_paars.png
........\...\...\.............\bol_rood.png
........\...\...\.............\icon.png
........\...\...\drawable-ldpi
........\...\...\.............\icon.png
........\...\...\drawable-mdpi
........\...\...\.............\icon.png
........\...\resources.ap_
........\gen
........\...\cn
........\...\..\itcast
........\...\..\......\dragdrop
........\...\..\......\........\R.java
........\project.properties
........\res
........\...\drawable-hdpi
........\...\.............\bol_blauw.png
........\...\.............\bol_geel.png
........\...\.............\bol_groen.png
........\...\.............\bol_paars.png
........\...\.............\bol_rood.png
........\...\.............\icon.png
........\...\drawable-ldpi
........\...\.............\icon.png
........\...\drawable-mdpi
........\...\.............\icon.png
........\...\layout
........\...\......\main.xml
........\...\values
........\...\......\strings.xml
........\src
........\...\cn
........\...\..\itcast
........\...\..\......\dragdrop
........\...\..\......\........\ColorBall.java
........\...\..\......\........\DrawView.java
........\...\..\......\........\MainActivity.java