本文介绍了从NSString中删除除数字以外的所有内容的处理方法,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(电话号码),带有一些括号和连字符,因为某些电话号码已格式化.如何从字符串中删除除数字以外的所有字符?

I have an NSString (phone number) with some parenthesis and hyphens as some phone numbers are formatted. How would I remove all characters except numbers from the string?

推荐答案

旧问题,但如何解决:

  NSString *newString = [[origString componentsSeparatedByCharactersInSet:
                [[NSCharacterSet decimalDigitCharacterSet] invertedSet]]
                componentsJoinedByString:@""];

它会爆炸一组非数字的源字符串,然后使用空字符串分隔符重新组合它们.不能像挑选字符那样高效,但是代码紧凑得多.

It explodes the source string on the set of non-digits, then reassembles them using an empty string separator. Not as efficient as picking through characters, but much more compact in code.

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08-04 13:03
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