ios - Objective-C - 如何用“+”替换空格

Question

句子中有空格时如何添加加号（+）？

例子：

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:@"+"];

Answer 2

尝试stringByReplacingOccurrencesOfString:withString:来自 NSString 类的方法

Answer 3

你可以这样做：

NSString *helloWorld = @"Hello How are you doing";
NSString *alteredString = [helloWorld stringByReplacingOccurrencesOfString:@" " withString:@"+"];

stringByReplacingOccurrencesOfString:@" " withString:@"+"就是你在这里看到的。

祝你好运。

Answer 4

 NSMutableString *nstring = [NSMutableString stringWithFormat:@"Hello how are you doing"];

   NSString *newString =  [nstring stringByReplacingOccurrencesOfString:@" " withString:@"+"];
    NSLog(@"%@",newString);