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CocoaLumberjack is a fast & simple, yet powerful & flexible logging framework for Mac and iOS.

• install viaCocoaPods

platform:ios,'8.0'pod'CocoaLumberjack/Swift'use_frameworks!

Note:Swift is a subspec which will include all the Obj-C code plus the Swift one, so this is sufficient.For more details about how to use Swift with Lumberjack, seethis conversation.

If you installed using CocoaPods or manually:

import CocoaLumberjack

DDLog.addLogger(DDTTYLogger.sharedInstance()) // TTY = Xcode consoleDDLog.addLogger(DDASLLogger.sharedInstance()) // ASL = Apple System LogsletfileLogger:DDFileLogger=DDFileLogger() // File LoggerfileLogger.rollingFrequency=60*60*24  // 24 hoursfileLogger.logFileManager.maximumNumberOfLogFiles=7DDLog.addLogger(fileLogger)...DDLogVerbose("Verbose");DDLogDebug("Debug");DDLogInfo("Info");DDLogWarn("Warn");DDLogError("Error");

platform:ios,'7.0'pod'CocoaLumberjack'

If you're using Lumberjack as a framework, you can@import CocoaLumberjack.

Otherwise,#import <CocoaLumberjack/CocoaLumberjack.h>

[DDLogaddLogger:[DDTTYLoggersharedInstance]];// TTY = Xcode console[DDLogaddLogger:[DDASLLoggersharedInstance]];// ASL = Apple System LogsDDFileLogger *fileLogger = [[DDFileLoggeralloc]init];// File LoggerfileLogger.rollingFrequency =60 *60 *24;// 24 hour rollingfileLogger.logFileManager.maximumNumberOfLogFiles =7;[DDLogaddLogger:fileLogger];...DDLogVerbose(@"Verbose");DDLogDebug(@"Debug");DDLogInfo(@"Info");DDLogWarn(@"Warn");DDLogError(@"Error");

Carthage is a lightweight dependency manager for Swift and Objective-C. It leverages CocoaTouch modules and is less invasive than CocoaPods.

To install with Carthage, follow the instruction onCarthage

Cartfile

github "CocoaLumberjack/CocoaLumberjack"

• orinstall manually
• read theGetting started guide, check out theFAQ section or the otherdocs
• if you find issues or want to suggest improvements, create an issue or a pull request
• for all kinds of questions involving CocoaLumberjack, use theGoogle group or StackOverflow (use#lumberjack).

• ReplaceDDLog.h imports by#import <CocoaLumberjack/CocoaLumberjack.h>.

Advanced users, third party libraries:

• Replace allDDLogC macros for regularDDLog macros.
• Replace log level (LOG_LEVEL_*) macros withDDLogLevel enum values
• Replace log flag (LOG_FLAG_*) macros withDDLogFlag enum values
• ReplaceDDLogMessage ivars and method calls to the new ivars and methods
  • logMsg with_message
  • logLevel with_level
  • logFlag with_flag
  • logContext with_context
  • lineNumber with_line (type changed fromint toNSUInteger)
  • file with_file (filename contains just the file name, without the extension and the full path)
  • timestamp with_timestamp
  • methodName withfunction
• ReplaceDDAbstractLoggerformatter tologFormatter
• YSSingleFileLogger ivars are no longer accesible, use the methods instead
• Replace[DDLog addLogger:withLogLevel:] with[DDLog addLogger:withLevel:]

If an included library requires it, you can force CocoaLumberjack 1.x by setting the version before the conflicting library:

pod'CocoaLumberjack','~> 1.9'pod'ConflictingLibrary'

It is similar in concept to other popular logging frameworks such as log4j, yet is designed specifically for Objective-C, and takes advantage of features such as multi-threading, grand central dispatch (if available), lockless atomic operations, and the dynamic nature of the Objective-C runtime.

In most cases it is an order of magnitude faster than NSLog.

It takes as little as a single line of code to configure lumberjack when your application launches. Then simply replace your NSLog statements with DDLog statements and that's about it. (And the DDLog macros have the exact same format and syntax as NSLog, so it's super easy.)

One log statement can be sent to multiple loggers, meaning you can log to a file and the console simultaneously. Want more? Create your own loggers (it's easy) and send your log statements over the network. Or to a database or distributed file system. The sky is the limit.

Configure your logging however you want. Change log levels per file (perfect for debugging). Change log levels per logger (verbose console, but concise log file). Change log levels per xcode configuration (verbose debug, but concise release). Have your log statements compiled out of the release build. Customize the number of log levels for your application. Add your own fine-grained logging. Dynamically change log levels during runtime. Choose how & when you want your log files to be rolled. Upload your log files to a central server. Compress archived log files to save disk space...

• You're looking for a way to track down that impossible-to-reproduce bug that keeps popping up in the field.
• You're frustrated with the super short console log on the iPhone.
• You're looking to take your application to the next level in terms of support and stability.
• You're looking for an enterprise level logging solution for your application (Mac or iPhone).

• Get started using Lumberjack
  
• Different log levels for Debug and Release builds
  
• Different log levels for each logger
  
• Use colors in the Xcode debugging console
  
• Write your own custom formatters
  
• FAQ
  
• Analysis of performance with benchmarks
  
• Common issues you may encounter and their solutions
  
• AppCode support
• Full Lumberjack documentation
  

The current version of Lumberjack requires:

• Xcode 7.1 or later
• iOS 5 or later
• OS X 10.7 or later
• WatchOS 2 or later
• TVOS 9 or later

• for Xcode 7.0 or earlier, use the 2.1.0 version
• for Xcode 6 or earlier, use the 2.0.x version
• for OS X < 10.7 support, use the 1.6.0 version

• Robbie Hanson
• Love the project? Wanna buy me a coffee? (or a beer :D)

• Ernesto Rivera
• Dmitry Vorobyov
• Bogdan Poplauschi

• CocoaLumberjack is available under the BSD license. See theLICENSE file.