CocoaLumberjack

http://www.cocoachina.com/industry/20140414/8157.html

http://www.cocoachina.com/ios/20150311/11300.html

static constint ddLogLevel =DDLogLevelWarning;

-(void)setUpLumberJack

{

    NSArray  *paths =NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES);

    NSString *docPath = [[pathslastObject]stringByAppendingString:@"/Logs"];

    DDLogFileManagerDefault* fileManager = [[DDLogFileManagerDefaultalloc]initWithLogsDirectory:docPathdefaultFileProtectionLevel:NSFileProtectionNone];

    DDFileLogger* fileLogger = [[DDFileLoggeralloc]initWithLogFileManager:fileManager];

    

    [DDLogaddLogger:[DDASLLoggersharedInstance]];

    [DDLogaddLogger:[DDTTYLoggersharedInstance]];

    [DDLogaddLogger:fileLogger];

}