“Run > Stop on Objective-C exception” in Xcode 4?

问题:

Maybe somebody knows where is the "Run > Stop on Objective-C exception" menu in Xcode 4? I've used it sometimes in Xcode 3, but it disappeared in the new IDE.

回答1:

In the left side column of xcode 4:

1. tap on the breakpoint tab (the 6th tab over)
2. tap on the + button in the bottom left of the window
3. tap 'add exception breakpoint'
4. tap 'done' on the popup

回答2:

See the image It will help,

good luck, Naveen Shan

回答3:

Someone else told me this, and I'm adding it here so I can favorite this question and have a useful reference to look back on.

Set the objc exception breakpoint action to po $eax and you'll usually get the handy-dandy exception message right there in the debugger window when it breaks.