Change the log level on iOS 10 (Unified Logging) with Console.app

Question

This is so simple but: how on earth do I set the level of log messages I see in Console.app, if I am trying to use iOS10\'s new \"Unified Logging & Activity Tracing\" AP

Answer 1

Hilariously, the answer is that you just go to the Console.app's menu bar and select:

• Action / Include Info Messages
• Action / Include Debug Messages

Answer 2

Xcode 10.0 beta 6 (likely others too) won’t show debug messages logged from the simulator even after enabling Include Info Messages, Include Debug Messages in the Console.app. AFAIK there is no fix for this.

To see debug logs sent from the simulator you have to stream from a terminal instead:

xcrun simctl spawn booted log stream --debug --predicate 'subsystem == "es.com.jano.Myapp"'