Question

嗨,我有个这样的弦

NSString *str=@"1,2,3,4";

我必须从它中删除任何字符 < 坚固 > 动力。例如, < code_" 3, " 。

Answer 1

NSString *str=@"1,2,3,4";
[str stringByReplacingOccurrencesOfString:@"3," withString:@""];

这将删除 str 中的所有@"3" 。

如果您只想要删除@ "3" 的第一次发生, 只需删除 :

NSString* str = @"1,2,3,4";
NSRange replaceRange = [str rangeOfString:@"3,"];
if (replaceRange.location != NSNotFound){
    NSString* result = [str stringByReplacingCharactersInRange:replaceRange withString:@""];
}

希望这能帮上忙

Answer 2

  NSString *str=@"1,2,3,4";
  int numberToRemove = 4;

 str = [str stringByReplacingOccurrencesOfString:[NSString stringWithFormat:@"%d",numberToRemove] withString:@""];
 str = [str stringByReplacingOccurrencesOfString:@",," withString:@","];

这会有帮助的

Answer 3

这对我有用,如果有人愿意帮忙的话!

NSString *newStr = @"";
    newStr = [str stringByReplacingOccurrencesOfString:@"3," withString:@""];

友情链接