View all your DDLog messages in a nice terminal-style view controller! Don't forget to call: `[DDLog addLogger:myLogViewController]`

SRLogViewController.h

//
//  SRLogViewController.h
//
//  Created by Connor Grady on 4/25/14.
//  Copyright (c) 2014 Stadium Runner. All rights reserved.
//

#import <UIKit/UIKit.h>
#import <CocoaLumberjack/DDLog.h>

@interface SRLogViewController : UIViewController <DDLogger>

@property (nonatomic, weak) UITextView *textView;

@property (nonatomic, strong) id<DDLogFormatter> logFormatter;

@property (nonatomic, assign) BOOL autoScrollsToBottom;

@end

SRLogViewController.m

//
//  SRLogViewController.m
//
//  Created by Connor Grady on 4/25/14.
//  Copyright (c) 2014 Stadium Runner. All rights reserved.
//

#import "SRLogViewController.h"

#define Red     [UIColor colorWithRed:1 green:0 blue:0 alpha:0.75]
#define Green   [UIColor colorWithRed:0 green:1 blue:0 alpha:1]
#define Blue    [UIColor colorWithRed:0 green:1 blue:1 alpha:1]
#define Yellow  [UIColor colorWithRed:1 green:1 blue:0 alpha:0.75]



@implementation SRLogViewController



- (UIStatusBarStyle)preferredStatusBarStyle {
    return UIStatusBarStyleLightContent;
}



- (instancetype)init {
    self = [super init];
    if (self) {
        
        _autoScrollsToBottom = YES;
        
    }
    return self;
}

- (void)loadView {
    
    [super loadView];
    
    self.textView.backgroundColor = [UIColor colorWithRed:0.01 green:0.01 blue:0.01 alpha:1];
    
}





#pragma mark - DDLogger

- (void)logMessage:(DDLogMessage *)logMessage {
    
    NSString *logMsg;
    
    if (self.logFormatter)  logMsg = [self.logFormatter formatLogMessage:logMessage];
    else                    logMsg = logMessage->logMsg;
    
    if (logMessage->logLevel == LOG_LEVEL_ERROR)
        DDLogError(@"[SRLogViewController] LOG LEVEL ERROR!!!");
    
    logMsg = [NSString stringWithFormat:@"\n%@", logMsg];
    
    NSMutableAttributedString *msg = [[NSMutableAttributedString alloc] initWithString:logMsg];
    
    if (logMessage->logFlag == LOG_FLAG_ERROR) {
        [msg insertAttributedString:[[NSAttributedString alloc] initWithString:@"ERROR: "] atIndex:1];
        [msg addAttribute:NSForegroundColorAttributeName value:Red range:NSMakeRange(1, msg.length-1)];
        [msg addAttribute:NSUnderlineStyleAttributeName value:@1 range:NSMakeRange(1, msg.length-1)];
    }
    else if (logMessage->logFlag == LOG_FLAG_WARN) {
        [msg insertAttributedString:[[NSAttributedString alloc] initWithString:@"WARNING: "] atIndex:1];
        [msg addAttribute:NSForegroundColorAttributeName value:Yellow range:NSMakeRange(1, msg.length-1)];
        [msg addAttribute:NSUnderlineStyleAttributeName value:@1 range:NSMakeRange(1, msg.length-1)];
    }
    else if (logMessage->logFlag == LOG_FLAG_INFO)
        [msg addAttribute:NSForegroundColorAttributeName value:Blue range:NSMakeRange(1, msg.length-1)];
    else if (logMessage->logFlag == LOG_FLAG_DEBUG)
        [msg addAttribute:NSForegroundColorAttributeName value:Yellow range:NSMakeRange(1, msg.length-1)];
    else
        [msg addAttribute:NSForegroundColorAttributeName value:Green range:NSMakeRange(1, msg.length-1)];
    
    
    
    ExecuteOnMainThread(^{
        
        NSMutableAttributedString *text = [self.textView.attributedText mutableCopy];
        [text appendAttributedString:msg];
        self.textView.attributedText = text;
        
        // Gets reset each time... annoying
        self.textView.font = [UIFont fontWithName:@"Courier" size:12];
        
        if (self.autoScrollsToBottom)
            [self.textView scrollRangeToVisible:NSMakeRange(self.textView.text.length, 0)];
        
    });
    
}



#pragma mark - Getters

- (UITextView *)textView {
    if (!_textView) {
        UITextView *textView = [UITextView new];
        textView.alwaysBounceVertical = YES;
        textView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
        textView.editable = NO;
        textView.frame = self.view.bounds;
        //textView.textColor = Green;
        [self.view addSubview: _textView = textView ];
    }
    return _textView;
}



@end