Writing NSLog to a local file on the device (iOS)

Question

I have an application that currently outputs through NSLog for certain things, and I want to have those outputs be written to a local file.

I have been using this article: Save NSLog into a Local File

It was answered by stack overflow user Josiah, so thank you for that Josiah!

I want to use the code presented in the linked question, but I am not sure of how to format the self created logIt method to replace the NSLog calls.

Can anyone help a fledgling iOS coder?

Thanks!

score 1 · Answer 1 · edited Dec 05 '14 at 07:44

1

Probably using an external library like Cocoa Lumberjack for example would be the simplest solution. You can configure file loggers easily there, set up log file retention policy, etc.

https://github.com/CocoaLumberjack/CocoaLumberjack

edited Dec 05 '14 at 07:44

jscs

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answered Dec 04 '14 at 14:09

maciejs

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I don't know that it would be the *simplest* solution. CocoaLumberjack can actually be a bit of a challenge to get your head around if you want anything other than the default behavior, but it's quite useful, and already finished and tested. – ipmcc Dec 04 '14 at 14:54

score 0 · Answer 2 · answered Dec 04 '14 at 14:42

Pass the contents of the NSLog into the method logIt: as an NSString. You can simply pass it into the stringWithFormat: class method of NSString and then pass on the returned value.

An example would be something like -

replace

NSLog(@"message with %f value", aFloat);

with

[self logIt:[NSString stringWithFormat:@"message with %f value", aFloat]];

Writing NSLog to a local file on the device (iOS)

2 Answers2