如何从NSString中删除字符？

Question

我想从NSString中剥离Unicode字符（\\ u0097）。

Answer 1

This is simplest to remove \—:

NSString * deGremlinedString = [theString stringByReplacingOccurrencesOfString:@"\u0097" withString:@""];

The docs for that method are right here .

Alternatively, if the starting string is an NSMutableString, then you can use this method :

[theMutableString replaceOccurrencesOfString:@"\u0097" withString:@"" options:NSLiteralSearch range:NSMakeRange(0, [theMutableString length])];

Answer 2

Try this:

NSCharacterSet* badUnicodeCharSet = [NSCharacterSet characterSetWithCharactersInString:@"\u0097"];
theString = [[theString componentsSeparatedByCharactersInSet:badUnicodeCharSet] componentsJoinedByString:@""];

Answer 3

I'm assuming that you're trying to strip the character from an NSString. I did a quick google search and found this link .

I hope this helps.

Answer 4

I believe you have to use two backslashes to escape the backslash. So @"\\\—" . I'm not positive, but I read this page that says:

the reason for that is the first backslash is an escape in the string literal (so you can do things like @"\\""); the second backslash is the one that makes it into the string to be parsed by NSConstantString. --boredzo

Sorry if this is wrong, but it was what I understood from the page.