How do I debug when implementing the handleOpenURL message?

Question

I'm writing an iPhone app that can be started via a custom URL. So, I override - (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url

To test my changes, I have to run the app in the simulator, then quit out and launch Safari. I then type in my custom URL in the address bar to launch the app.

But every time I launch, the app crashes. I'm trying to figure out why, but when I set a breakpoint and launch the app from the home screen (instead of in XCode) it doesn't seem to attach.

I even tried putting NSLog statements in the handleOpenURL message, but they don't get printed to the console.

I suppose I could create UIAlertViews but... yeah, yikes. Any other way to connect to a debug session in the Simulator?

Answer 1

Open up Console.app (in the Utilities folder). Your log messages should appear there.

Answer 2

Can you write a Unit Test that would exercise the functionality of your AppDelegate?

Answer 3

I have not tried this but how about adding a breakpoint instruction inline in your code:

#if TARGET_CPU_ARM == 1
#define breakpoint() __asm__ volatile ("bkpt 0")
#else   // !ARM - assume INTEL. Everything else will break
#define breakpoint() __asm__ volatile ("int3");
#endif