Hi! Been looking for a solution regarding the topic. Here it is, working stable. Cheers!
Tested on iPhones and Androids.
Widget uploads files to 'uploads' directory, change it the way you need it.
Current date / time is added to file names.
Widget returns uploaded file URL to the app state 'filePath', create it before testing.
Recording format is MPEG4 AAC, 16 khz. 10 seconds audio is about 50kb size.
Connect Firebase project, add dependencies: flutter_sound: ^8.1.4 and permission_handler: ^10.0.0
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