I’m considering developing an app that would take a signal via the USB port on an Android phone (or the functional equivalent on an iPhone) and using that signal to play an audio recording.
The signal would originate with a switch that would close a circuit, that circuit closure would need to be converted by some intermediate device into a USB signal. The app would need to be watching the USB port for the signal. It would then play a recorded file. The recording would be created using the recording app intrinsic to the phone or using functionality built into this app.
I see that there is an Audio control but it appears to only do playback, not recording. Is a recording control available?
The description of the Audio control says that the file played has to be in the project folder. This would seem to imply that the file has to be part of the installation. I’m looking for a way to play recordings that the user would create post install. Any idea how this could be done?
Thanks for any suggestions,