NSLog not printing to console

Question

I have an Xcode project I've been working on for months. I've never had a problem with NSLog, but after upgrading to Xcode 4.2 nothing will log to the console. I even tried throwing this in viewDidLoad:

    - (void)viewDidLoad
{
    [super viewDidLoad];

    NSLog(@"Can anyone hear me?");

And nothing. Is anyone else having this problem or know a solution?

Check if this can help you : http://stackoverflow.com/a/34743750/1753005 — Jayprakash Dubey, Jan 12 '16 at 12:31

serverpunk · Accepted Answer · 2018-12-07T05:33:43.247

80

Well, this is embarrassing. The console got deactivated somehow and I was actually watching the variables window. Pressing Shift +  + C did the trick.

Many thanks to Robert King on this thread:

https://devforums.apple.com/message/565880#565880

edited Dec 07 '18 at 05:33

answered Oct 23 '11 at 00:12

serverpunk

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I had the same thing, but it wasn't after the upgrade. I've been using it for awhile now. I have no clue how it happened though...strange. Also, (if this is indeed a bug) I thought I should note that I'm running Xcode 4.3.2 – daveMac Apr 25 '12 at 14:23
1

Holy cow. This happened to me too. I spent 2 days on this until I saw the 'solution' here. Good lord. – sam Jan 13 '13 at 17:48
1

My console is open, it's set to show all output, and my NSLogs still aren't showing up. – bugloaf Nov 06 '15 at 03:12
@bugloaf you fixed it?I am facing the same issue. – abhimuralidharan Apr 13 '16 at 11:59
Holy cow ! Happens now after updating OS (XCOde 8.2.1) Thanks ! – joan Jan 24 '17 at 10:45
where is this Apple sign key in keyboard ? – Abhishek Thapliyal Feb 23 '17 at 10:32

score 77 · Answer 2 · edited Nov 01 '16 at 06:14

77

This is a bug of Xcode8 + iOS10, we can solve it in this way:

When on simulator, add the Name OS_ACTIVITY_MODE and the Value Variables disable and check it (Product -> Scheme -> Edit Scheme -> Run -> Arguments -> Environment).

When on device, only add OS_ACTIVITY_MODE and check it（don't add the Value). You'll see the NSLog in the Xcode8 Console.

edited Nov 01 '16 at 06:14

Vincent

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answered Oct 25 '16 at 20:33

Igor

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score 12 · Answer 3 · answered Oct 11 '16 at 10:13

12

In iOS10, a lot of system logging is displayed on the console. This can be disabled by including the OS_ACTIVITY_MODE = disabled in the Run Arguments for your scheme

However for iOS10, NSLog messages will not be displayed anymore. In lower iOS versions the messages will still be displayed. So maybe for most test cases you can use a lower iOS version.

Otherwise you can include a Swift function which prints (print function) your text, this is working okay in iOS10.

Tested on iOS10.0.2 and iOS9.3

answered Oct 11 '16 at 10:13

Vincent

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This was the solution that worked for me. Is this a bug that has been reported? – Scooter Oct 12 '16 at 01:43
I believe so, because Apple has fixed this in the new Beta. – Vincent Oct 14 '16 at 10:24

score 10 · Answer 4 · answered Jun 27 '12 at 01:12

10

My issue is that I have Debugger Output selected. Once I changed it to either All output or target output NSLogs appear fine.

In case this confuses you its on the left of the Debug area.

answered Jun 27 '12 at 01:12

timv

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Dayum ... you know how long this confused me? I couldn't figure out for the life of me why I couldn't see this output. – Joel Martinez Jan 07 '13 at 23:04
Where is this option? – Talha Ahmad Khan Nov 22 '22 at 07:01
@TalhaAhmadKhan sorry its been too long since I answered this and have not coded in IOS for some time. Hopefully, someone else may be able to provide the answer. – timv Nov 23 '22 at 10:48

score 3 · Answer 5 · answered Jul 17 '15 at 05:58

3

I had the same issue. The trick is to search and remove the below mentioned line from the project.

  #define NSLog(...)

Search the entire project and remove it.

answered Jul 17 '15 at 05:58

bharathi kumar

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score 1 · Answer 6 · answered Jan 01 '18 at 15:57

I just experienced this, so here's another thing to check.

-> Make sure you don't have anything typed in the Filter field below the Log Output. So, in my case I was searching for a term in the logger and forgot to delete the searched terms out of the Filter text field. DOH!

score 0 · Answer 7 · answered Jul 08 '15 at 11:07

0

My issue was that I'd accidentally severed the referencing outlet from App Delegate (delegate - file's owner).

answered Jul 08 '15 at 11:07

Jack James

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NSLog not printing to console

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