Global log level for CocoaLumberjack

You can use this in your *.pch file to automatically get different global log levels depending upon your current build configuration.[for xcode 4+]

#ifdef DEBUG
  static const int ddLogLevel = LOG_LEVEL_VERBOSE;
#else
  static const int ddLogLevel = LOG_LEVEL_WARN;
#endif

or If you need a different log level for every logger, you can easily achieve this using the DDLog +addLogger:withLogLevel: method.

[DDLog addLogger:[DDASLLogger sharedInstance] withLogLevel:LOG_LEVEL_INFO];
[DDLog addLogger:[DDTTYLogger sharedInstance] withLogLevel:LOG_LEVEL_DEBUG];

Defining a log level in every source file you mentioned has a benefit. You can use verbose logging level just for the part that you're currently working on. For rest part, you can use other level like info, warn, error.

You could use an #include statement in your *.pch file so that it's automatically included in all your project's files.

I didn't find a better way to do it than the one explained in the article I mentioned in the question.

Constant.h

extern int const ddLogLevel;

Constant.m

#import "Constants.h"
#import "DDLog.h"

int const ddLogLevel = LOG_LEVEL_VERBOSE;

Logger configuration

#import "DDLog.h"
#import "DDASLLogger.h"
#import "DDTTYLogger.h"
#import "DDFileLogger.h"

...

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {    

 [DDLog addLogger:[DDASLLogger sharedInstance]];
 [DDLog addLogger:[DDTTYLogger sharedInstance]];

 DDFileLogger *fileLogger = [[DDFileLogger alloc] init]; 
 [DDLog addLogger:fileLogger];
 [fileLogger release];

...

Import your class

#import "DDLog.h"
#import "Constants.h"

...

- (void)someMethod {
 DDLogVerbose(@"Log this message");
}

No more Prefix Headers, please.

You do not need the now deprecated .pch file, simply include a header file where needed.

Logger.h - CocoaLumberjack 1.9.x

#ifndef Project_Logger_h
#define Project_Logger_h

#if defined(__OBJC__)

#import <CocoaLumberjack/DDLog.h>
extern int ddLogLevel;

#endif

#endif

Logger.m

#import "Logger.h"

int ddLogLevel = LOG_LEVEL_VERBOSE;

Changes for CocoaLumberjack 2.x

#import <CocoaLumberjack/CocoaLumberjack.h>

int ddLogLevel = DDLogLevelVerbose;

If the syntax changes when 2.0 is out of beta please comment or edit.

Example usage in AppDelegate

#import "AppDelegate.h"

#import "Logger.h"

#import <CocoaLumberjack/DDFileLogger.h>
#import <CocoaLumberjack/DDASLLogger.h>
#import <CocoaLumberjack/DDTTYLogger.h>



@interface AppDelegate ()
@property (strong, nonatomic) DDFileLogger *fileLogger;
@end



@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    [DDLog addLogger:[DDASLLogger sharedInstance]];
    [DDLog addLogger:[DDTTYLogger sharedInstance]];

    DDFileLogger *fileLogger = [[DDFileLogger alloc] init];
    fileLogger.rollingFrequency = 60 * 60 * 24; // 24 hour rolling
    fileLogger.logFileManager.maximumNumberOfLogFiles = 7;

    [DDLog addLogger:fileLogger];
    self.fileLogger = fileLogger;

    DDLogDebug(@"%s", __PRETTY_FUNCTION__);

    return YES;
}

- (void)applicationWillResignActive:(UIApplication *)application
{
    DDLogDebug(@"%s", __PRETTY_FUNCTION__);
}

- (void)applicationDidEnterBackground:(UIApplication *)application
{
    DDLogDebug(@"%s", __PRETTY_FUNCTION__);
}

- (void)applicationWillEnterForeground:(UIApplication *)application
{
    DDLogDebug(@"%s", __PRETTY_FUNCTION__);
}

- (void)applicationDidBecomeActive:(UIApplication *)application
{
    DDLogDebug(@"%s", __PRETTY_FUNCTION__);
}

- (void)applicationWillTerminate:(UIApplication *)application
{
    DDLogDebug(@"%s", __PRETTY_FUNCTION__);
}