A expandable and flexible log framework for iOS

pod 'Coolog'

[[COLLogManager sharedInstance] setup];
    
[[COLLogManager sharedInstance] enableFileLog];  // open file log
[[COLLogManager sharedInstance] enableConsoleLog];  // open xcode console log
//    [[COLLogManager sharedInstance] enableNSLog];
    
#ifdef DEBUG
    [COLLogManager sharedInstance].level = COLLogLevelAll;
#else
    [COLLogManager sharedInstance].level = COLLogLevelInfo;
#endif

CLogError(@"tag", @"%@", @"log content");
	
CLogWarning(@"tag", @"%@", @"log content");
	
CLogInfo(@"tag", @"%@", @"log content");
	
CLogDefault(@"tag", @"%@", @"log content");
	
CLogDebug(@"tag", @"%@", @"log content");

[[COLLogManager sharedInstance] enableRemoteConsole];

#import "COLLogger.h"
@interface MyLogger : NSObject <COLLogger>

@end

#import "MyLogger.h"
#import <os/log.h>

@implementation MyLogger
@synthesize formatterClass = _formatterClass;

+ (instancetype)logger {
    return [[MyLogger alloc] init];
}

// This is your own log method. It will be called by log engine. 
- (void)log:(NSString *)logString {
	//For example, here below uses os_log as its implementation.
    os_log(OS_LOG_DEFAULT, "%{public}s", [logString UTF8String]);
}
@end

#import "COLLogFormatter.h"

@interface MyLogFormatter : NSObject <COLFormatable>

@end

#import "MyLogFormatter.h"

@implementation MyLogFormatter
// The log's format depends on this method.
- (NSString *)completeLogWithType:(COLLogType)type tag:(NSString *)tag message:(NSString *)message date:(NSDate *)date {
    return [NSString stringWithFormat:@"tag=[%@], type=[%zd], message=[%@], date=[%@]", tag, type, message, date];
}
@end

COLLoggerDriver *myDriver = [[COLLoggerDriver alloc] initWithLogger:[MyLogger logger]
                                                              formatter:[[MyLogFormatter alloc] init]
                                                                  level:COLLogLevelInfo];
[[COLLogManager sharedInstance].logEngine addDriver:myDriver];