NSLog not printing to console

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?

Solution 1:

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

Solution 2:

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.