Detecting if iOS app is run in debugger

Question

I set up my application to either send debugging output to console or a log file. Now, I\'d like to decide with in the code whether

• it is run in the debugger

Answer 1

It is possible to instruct the debugger to set environment variables when it launches a process it is about to debug. This can be done in Xcode by going to the menu item Product->Edit Scheme. Then under the Debug scheme's Arguments tab add a new environment variable. The variable should be named "debugger" with the value "true". Then the following code snippet can be used to determine if the debugger launched your process:

NSDictionary* env = [NSProcessInfo processInfo].environment;

if ([env[@"debugger"] isEqual:@"true"]) {
    NSLog(@"debugger yes");
}
else {
    NSLog(@"debugger no");
}