logPrint property
Log printer; defaults print log to console. In flutter, you'd better use debugPrint. you can also write log in a file, for example:
final file=File("./log.txt");
final sink=file.openWrite();
dio.interceptors.add(LogInterceptor(logPrint: sink.writeln));
...
await sink.close();
Implementation
void Function(Object object) logPrint;