本文介绍了删除NSString中的特殊字符的处理方法，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
我将段落转换为单词，其中包含许多特殊字符，例如
i am convert paragraph into words it contains many special characters like
" , " . `
如何在nsstring中删除此字符并仅在nsstring中获取字母
how to remove this characters in nsstring and get only alphabets in nsstring
ex新"到新的//the special characters are change
推荐答案
NSString *unfilteredString = @"!@#$%^&*()_+|abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890";
NSCharacterSet *notAllowedChars = [[NSCharacterSet characterSetWithCharactersInString:@"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"] invertedSet];
NSString *resultString = [[unfilteredString componentsSeparatedByCharactersInSet:notAllowedChars] componentsJoinedByString:@""];
NSLog (@"Result: %@", resultString);
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