iOS: How to debug "freshly launching" an app from a URL
These steps can be followed on the device. Founded at this link.
- Run the app from Xcode to install it on your device and then stop it from Xcode.
- Force quit the app from the app switcher UI on the device.
- Navigate to the scheme for the project in Xcode. Under the Run section's Info tab, there is a radio button for "Wait for executable to be launched". Make sure this is checked instead of the "Automatically" option.
- Run the app from Xcode. It will not open on the device, but the debugger will wait for it to open and then it will attach to it.
On the simulator as suggested by Marc-Alexandre Bérubé.
- Run your app on the simulator.
- Force quit the app on the simulator. Press
cmd+shift+(hit h twice). Swipe the app up. - Open your terminal and enter this
xcrun simctl openurl booted http://yourdomain/path.
You need to configure your Xcode app scheme to wait for the app to be launched manually. Here is how you do it: http://blogmobile.itude.com/2013/09/03/how-to-debug-deep-linking-in-ios/.
You then need to copy the launch URL and paste it to Mobile Safari. This will launch your app, and make Xcode get attached to the running app process.