Schreiben einer Android-Anwendung

We are going to get data via bluetooth connection from several machines. There are 3 different types of machines. Retrieved data must be stored in local directory of each machine. A UI has to be created where user can login and and start transfer of data. User can also read actual data. All user activities are done via icons. Service must have the possibility to get access via teamviewer and terminal. Must run on all Android versions > 2.36 Should also run on windows phones Thank you