Flutter: logger
You need to register a log reporter.
From https://pub.dartlang.org/packages/logging
main() { Logger.root.level = Level.ALL; Logger.root.onRecord.listen((LogRecord rec) { debugPrint('${rec.level.name}: ${rec.time}: ${rec.message}'); }); runApp(...);}You can have log reporters that write to a file or to some logging server, ...