Logging Framework for iOS?

Question

Is there a logging framework for iOS that could aid developers in diagnosing app crashes?

do you mean logging in terms of debugging on your own test equipment or logging user activity when app is in production? — dusker, Jun 28 '10 at 07:10
@dusker: For production as well as for debugging during development of the app. — thndrkiss, Jun 28 '10 at 08:39

score 53 · Accepted Answer · edited Apr 23 '13 at 18:45

You may like:

Lumberjack: stable and traditional

"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."

LibComponentLogging: beautiful and hardcore, used by RestKit

"LibComponentLogging is a small logging library for Objective-C applications on Mac OS X and the iPhone OS which provides conditional logging based on log levels and log components. Additionally, different logging strategies can be used, e.g. writing log messages to a file or sending them to the system log, while using the same logging interface."

NSLogger: fancy with a dedicated visualization OS X App

"NSLogger is a high perfomance logging utility which displays traces emitted by client applications running on Mac OS X or iOS (iPhone OS). It replaces your usual NSLog()-based traces and provides powerful additions like display filtering, image and binary logging, traces buffering, timing information, etc."

Also don't forget Apple's standard ASL library. With a few wrapper functions you can get very nice logging with multiple trace levels (debug, info, warning, error, ... etc.). — Mike Weller, Apr 23 '13 at 18:42

score 7 · Answer 2 · edited Apr 23 '13 at 18:45

7

I know this post is old but I'm looking for one as well. I found one called Lumberjack, though I haven't tried it yet.

edited Apr 23 '13 at 18:45

Quinn Taylor

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answered Dec 28 '11 at 14:32

Victor P

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Does it provide encryption if one needs to store the log securely? – surlac Oct 03 '12 at 14:30

score 4 · Answer 3 · answered Mar 04 '11 at 02:51

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I created a simple logging framework that might help. I'd appreciate any feedback you have. Hope it helps.

Link to Project Page

answered Mar 04 '11 at 02:51

JAgostoni

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score 3 · Answer 4 · edited May 23 '17 at 11:46

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This previous question seems to overlap. But the bottom line is:

NSLog(@"message");

or:

printf("message");

edited May 23 '17 at 11:46

Community

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answered Jun 28 '10 at 07:11

Blake Ramsdell

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score 1 · Answer 5 · answered Feb 21 '15 at 16:41

I have a slightly different need: not only do I want to debug crashes, but I also need to debug other errors (NSError, NSException).

I tried all 3 packages mentioned in IlDan's answer. However, all of them require me to adopt a new way of logging, which may not be compatible with the libraries I depend on. For example, I intended to adopt NSLogger but RestKit, which is an important library in my project, uses LibComponentLogging.

So I ended up with writing a small pod (https://github.com/kennethjiang/Teleport-NSLog) for that. The mechanism is to redirect stderr (where NSLog + all these logging frameworks write messages to) to a backend HTTP server. Now I can debug my app running in user's device just as if it was running in my xcode. :)

score 0 · Answer 6 · edited Apr 23 '13 at 18:45

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For basic logging use NSLog(@"your message here") If you want more flexible logging look into Lumberjack. It can let you disable logging in production etc etc.

edited Apr 23 '13 at 18:45

Quinn Taylor

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answered Aug 22 '12 at 05:57

Niklas Berglund

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Logging Framework for iOS?

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