Objective-C - 如何用'+'替换空间

Question

当句子中有空格时,如何添加加号(+)？

例:

Hello how are you doing

我想要的是:

Hello+how+are+you+doing

Answer 1

尝试:

NSString *str = @"Hello how are you doing";
str = [str stringByReplacingOccurrencesOfString:@" " withString:@"+"];