Setting up launch arguments is not working in iOS 18

Question

SuganrajS OP

Created 2w

Replies 2

Boosts 0

Participants 2

Hi Team,

I'm trying to set firebase flag as a launch arguments based on user choice and it is working fine in iOS 17 devices whereas not in iOS 18

Here is the sample

   if true  {
           var arguments = ProcessInfo.processInfo.arguments
           arguments.append("key")
           ProcessInfo.processInfo.setValue(arguments, forKey: "arguments")
  }

Answered by DTS Engineer in 812542022

Launch arguments are set external to the process (such as by Xcode for various debugging configurations), and are immutable by the process itself, since it is already launched. These arguments that are set outside of the process are available to the newly launched process in the argv array of main, and then made available through higher-level APIs such as ProcessInfo.

Your code snippet that sets a launch argument is using key-value coding to circumvent the read-only declaration of the arguments property doesn't accomplish anything, because a process cannot set its own arguments to pass back to itself for next launch.

If you're looking to store a simple user preference and read it back later, something like UserDefaults is an API that will do that for you.

— Ed Ford,  DTS Engineer

Boost

Answer 1

DTS Engineer OP

Apple

2w

Accepted Answer

Launch arguments are set external to the process (such as by Xcode for various debugging configurations), and are immutable by the process itself, since it is already launched. These arguments that are set outside of the process are available to the newly launched process in the argv array of main, and then made available through higher-level APIs such as ProcessInfo.

Your code snippet that sets a launch argument is using key-value coding to circumvent the read-only declaration of the arguments property doesn't accomplish anything, because a process cannot set its own arguments to pass back to itself for next launch.

If you're looking to store a simple user preference and read it back later, something like UserDefaults is an API that will do that for you.

— Ed Ford,  DTS Engineer

0

Answer 2

SuganrajS OP

1w

Thank you for the detailed response.

0