This FHIR Android application was implemented in Java with the Android Studio.
The FHIR version is DSTU3 (Draft Standard for Trial Use). The newest version is R4. https://hl7.org/fhir/R4/
Tested on HAPI FHIR public server: http://hapi.fhir.org/
Paper: Zhu, Yuanda, Ying Sha, Hang Wu, Mai Li, Ryan A. Hoffman, and May D. Wang. "Public Health Informatics: Proposing Causal Sequence of Death Using Neural Machine Translation." arXiv preprint arXiv:2009.10318 (2020). https://arxiv.org/abs/2009.10318
Most recent video demo on Youtube: https://youtu.be/9Bubwd2OzaA
Synthetic patient data: gtcdc-testcase1-stu3-r4.json