Suppose I have an NSDocument app that supports dragging-and-dropping of a file onto its icon to launch the app and open that file. My NSApplicationDelegate has implemented
- (BOOL)application:(NSApplication *)sender openFile:(NSString *)filename
which is invoked via the file drag-and-drop. I want to be able to break and begin debugging inside application:openFile: but must start the app out of Xcode to use drag-and-drop launching.
What would be a good way to do this?
In Xcode go to Product > Edit Scheme (or Option-Click the Run button in the toolbar).
Under the Info tab change the Launch option to
You'll want to set an appropriate breakpoint in your application:openFile: method,
then launch your app manually from the Finder by dropping a document file on the app icon.
To locate the built executable use 'Show in Finder' for your .app in Xcode's Project Navigator (or CMD+1).
The Xcode debugger should attach and break in your method.