First thing when you want to develop for Android is that you setup a working logcat, so you can see the logoutput! You find a lot of tutorials about how to enable logging on Android in the Internet. When you see the logout everything is much more easier. On mobiles it is very important that you keep an eye on the paths’s and names of your files! Mobile devices are case sensitive, so it matters if your images is called “img/data/MyImage.png” or “img/data/myimage.png”. Desktops will ignore this.
Hope it helps you out, and if you have any log you do not understand, let us know about it!