I have a set of Sony headphones with a single button and microphone. I also have a Samsung SC-04F running Android 5.0, unrooted.
I want to be able to press the button on my headset once and record my voice. When I press the button again, the recording stops.
Ideally this can happen regardless of what ever other app I happen to be using. So, if I'm listening to music, pressing the button will start the recording app. I guess it should probably pause the music, and then ideally return to music playing when I stop.
I've looked at options for apps that claim to allow recording via the headset microphone. But, this one for example, seems to require that the app already be running. I've also looked at headset button control apps, and I can get it to open a voice recorder app, but not actually start recording.
Is what I'm trying to achieve possible?