使用xCode 4.3.3使用未声明的标识符'NSLineBreakByWordWrapping'

Question

I get "Use of undeclared identifier 'NSLineBreakByWordWrapping'" on xCode 4.3.3 which doesn't appear on the beta one.

It happens on this code:

[text sizeWithFont:font constrainedToSize:textConstraintRect.size lineBreakMode: NSLineBreakByWordWrapping].height);

What do I need to import to solve this one?

Please help,

Answer 1

或者NSLineBreakMode.ByWordWrapping在swift中

Answer 2

请改用UILineBreakModeWordWrap 。