Custom Drawn Interface/Android - Lazarus wiki. Hah, there is also quite a bit for FreePascal and Lazarus (the FP IDE with a touch of Delphi) regarding the programming of Android apps. It's all still a bit wobbly and hacky, but it's making progress. The idea is quite funny - a minimal Java app with minimal activity and then the integration of Pascal code via JNI. The idea there is to be able to continue using the LCL - the GUI library of Lazarus - so that you can program across systems. And you can then also use the built-in GUI Builder.