Ln

Android applications typically use the built-in android.util.Log facility to log information to the android console. Ln is more natural log for Android. Forked from RoboGuice. It allows you to use a single API to control the log level, disable all logging (e.g. for release builds) and log to multiple endpoints. I was tired of copying these classes into my apps, so now it's a library.

Usage

1. Call Ln#set with your instance of LnInterface, such as EmptyLn (used by default) for release builds or DebugLn for debug builds.
2. Call Ln's static methods everywhere throughout your app.
3. Call Ln#setLogginLevel to change the logLevel at different points in your app.

Check out the sample app in ln-sample/ to see it in action.

Examples

Ln.v("hello there"); // prints "hello there"
Ln.d("%s %s", "hello", "there"); // prints "hello there" with varargs
Ln.e(exception, "Error during some operation"); // Throwables go at the FRONT!
Ln.w(exception, "Error during %s operation", "some other"); // Throwables and varargs

Extending

To log to a different endpoint you have one of these options, simply implement LnInterface. If you don't want to implement all the methods, extend EmptyLn and override the ones you need.

To log to multiple endpoints (say analytics and crash server) :

1. Initialize an instance of LnFacade. This class is facade, and delegates all calls to list of LnInterface's that it maintains.
2. Use Ln#addLoggingEndpoint to add your instances of LnInterface.
3. Call Ln#set with your instance of LnFacade

Download

Download the latest JAR or grab via Maven:

<dependency>
  <groupId>com.f2prateek.ln</groupId>
  <artifactId>ln</artifactId>
  <version>(insert latest version)</version>
</dependency>

or Gradle:

compile 'com.f2prateek.ln:ln:(insert latest version)'

License

The MIT License (MIT)

Copyright (c) 2013 Prateek Srivastava
Copyright (c) 2010 Xtreme Labs and Pivotal Labs

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.