fimber

Extensible logging for Flutter.

Based on famous Android logging library - Timber, this is library for simplify logging for Flutter. Using similar (as far as Dart lang allows) method API with same concepts for tree and planting logging tree.

Getting Started

To start add using it:

  • Add fimber to pubspec.yaml
dependencies:
  fimber: ^0.1.0
  • Start using it with static methods:
import 'fimber.dart';


void main() {
  var parameter = 343.0;
  // use directly
  Fimber.i("Test message $argument");
  Fimber.i("Extra error message", ex: Exception("Test thorwable"));
  
  // other log levels
  Fimber.d("DEBUG");
  Fimber.v("VERBOSE");
  Fimber.w("WARN");
  
}

This will log the value and grab a TAG from stacktrace - that is little costly and if more logs will be done per second.

  • Create tagged version of Fimber and use its instance inside class, you can create logger for a dart file or for a class.
var logger = FimberLog("MY_TAG");

void main() {
  
  logger.d("Test message");
}

// or inside a class
class SomeBloc {
  var logger = FimberLog("SomeBloc");
  String fetchMessage() {
    logger.d("About to fetch some data.");
    //...
    var data = "load something";

    logger.d("Retrived data (len = ${data.length}");
    return data;
  }
}

Libraries

fimber

Dart

dart:ui
Built-in types and core primitives for a Flutter application. [...]

Core

dart:async
Support for asynchronous programming, with classes such as Future and Stream. [...]
dart:collection
Classes and utilities that supplement the collection support in dart:core. [...]
dart:convert
Encoders and decoders for converting between different data representations, including JSON and UTF-8. [...]
dart:core
Built-in types, collections, and other core functionality for every Dart program. [...]
dart:developer
Interact with developer tools such as the debugger and inspector. [...]
dart:math
Mathematical constants and functions, plus a random number generator. [...]
dart:typed_data
Lists that efficiently handle fixed sized data (for example, unsigned 8 byte integers) and SIMD numeric types. [...]

VM

dart:io
File, socket, HTTP, and other I/O support for non-web applications. [...]
dart:isolate
Concurrent programming using isolates: independent workers that are similar to threads but don't share memory, communicating only via messages. [...]