删除NSString中的多个空格 [英] Removing multiple spaces in NSString
本文介绍了删除NSString中的多个空格的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我有一个 NSString
,这有多个空格,我想修剪那些空格并为@如何.....是...... .....你进@你好吗。(点只是空格)
I have a NSString
, this has multiple spaces, I want to trim those spaces and make a single space for e.g.@"how.....are.......you" into @"how are you".(dots are simply spaces)
我试过了
NSString *trimmedString = [user_ids stringByTrimmingCharactersInSet:
[NSCharacterSet whitespaceCharacterSet]];
它似乎不起作用。任何想法。
It not seems to work. Any idea.
推荐答案
您可以使用正则表达式来完成此任务:
You could use a regular expression to accomplish this:
NSError *error = nil;
NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:@" +" options:NSRegularExpressionCaseInsensitive error:&error];
该模式是一个空格,后跟一个或多个空格。将其替换为字符串中的单个空格:
The pattern is a space followed by one or more occurrences of space. Replace this with a single space in your string:
NSString *trimmedString = [regex stringByReplacingMatchesInString:user_ids options:0 range:NSMakeRange(0, [user_ids length]) withTemplate:@" "];
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